Business Combination Prospectus (Form 425)

Filed by Maplebear Inc.

Pursuant to Rule 425 under the Securities Act of 1933

and deemed filed pursuant to Rule 14a-12

under the Exchange Act of 1934

Subject Company: Maplebear Inc.

Commission File No.: 001-41805

The following communications are being filed in connection with the acquisition of Maplebear Inc. ("Instacart" or the "Company") by DoorDash, Inc. ("DoorDash")

Instacart Blog Post

The following blog post was made available in connection with the transaction beginning on October 29, 2026.

Advancing the Future of Grocery with DoorDash

Today, we announced that Instacart has signed a definitive agreement to be acquired by DoorDash, marking an exciting new chapter for our company.

I've said many times that grocery is an enormous category, and we're still in the early stages of realizing what technology can do to transform it and help the entire industry grow. By bringing together DoorDash's global consumer reach and logistics capabilities with Instacart's purpose-built grocery technology and trusted retailer and brand relationships, we have the potential to accelerate our impact in a really meaningful way.

Over the past year, we've made incredible progress across our business. We've strengthened our marketplace, increased adoption of our enterprise technologies, and grown the breadth and depth of our ads and data ecosystem. We enter this next chapter well-positioned for success, with even greater opportunities ahead.

I want to thank our incredible employees, retail and brand partners, and shoppers for everything they've done to bring us to this moment. You can read more about today's announcement in the joint press release here.

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to

complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security

holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Email from Instacart's CEO to All Instacart Employees

The following email was sent to Instacart employees on October 29, 2026.

Subj: A New Chapter for Instacart

Confidential - Do Not Forward

Hi Team,

I have some big news to share with you today. We have just announced that Instacart signed an agreement to be acquired by DoorDash.

This is a significant moment for our company, and I'm really excited about the opportunity ahead of us.

Over the past year, we've made incredible progress across our business. We've strengthened our marketplace, increased adoption of our enterprise technologies, and grown the breadth and depth of our ads and data ecosystem. We're announcing our Q3 results alongside the acquisition announcement this morning, and I'm proud to share that Q3 was our best quarter ever as a public company. Our fundamentals keep getting stronger, and we've got solid consumer demand, improving customer engagement, and expanding profitability.

I've said many times that grocery is an enormous category, and we're still in the early stages of realizing what technology can do to transform it and help the entire industry grow. By bringing together DoorDash's global consumer reach, local delivery network, and logistics capabilities with Instacart's purpose-built grocery technology and trusted retailer and brand relationships, we have the potential to accelerate our impact in a really meaningful way.

Together, we expect consumers will have access to faster delivery options and more selection and savings, retailers and brands will have better tools to compete and grow, and shoppers will have more ways to earn. And importantly, we can bring our technology and innovation to more people, in more places, faster.

I've gotten to know the DoorDash team well throughout this process. They have deep admiration and respect for our business and understand that Instacart's success is the result of your collective contributions. I'm excited about what we can accomplish together and the opportunities to extend our reach and expand our collective impact on our stakeholders.

I want to be clear about what happens next. While today marks an important milestone, it is the first of many steps required to officially combine our two companies. We expect the transaction to close by the end of 2027 or in the first half of 2028, subject to customary closing conditions, including regulatory and shareholder approvals.

Instacart and DoorDash will continue to operate as separate, independent companies until the transaction is closed. There will be no immediate changes to your day-to-day responsibilities, and our focus remains on executing on our strategy and delivering for the customers, retailers, brands, and shoppers who rely on us.

I also know an announcement like this naturally raises a lot of questions. I'll be hosting a Town Hall at 10:00 am PT / 1:00 pm ET today to discuss and begin to answer your questions. We won't have time to get to every single question, but we're committed to being as transparent and supportive as we can throughout the process. Also, Tony Xu, the co-founder and CEO of DoorDash, will join us for a Fireside Chat early next week to meet the team and share why he is personally excited about what we can do together.

We'll also share an FAQ resource shortly that will live on Wiki and establish regular opportunities to answer your questions and provide updates. We'll be sharing more on all of this soon.

This announcement is a testament to what we have accomplished and the hard work that brought us here. I'm incredibly proud of what we've built together, and excited about the opportunity to take it even further. Thank you, as always, for your dedication and commitment.

Chris

[Important Information]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related

to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Email from Instacart's VP of People to All Instacart Employees

The following email was sent to Instacart employees on October 29, 2026.

Subject: Today's Announcement: Beginning our Employee Education Campaign

Confidential - Do Not Forward

Team,

Chris shared big news this morning, and I know it raises questions for you all. I want to be clear about what we know today, where you can get answers, and what more we expect to know over time.

What stays the same until close

Instacart and DoorDash remain separate, independent companies until the transaction closes. In this interim period, our people programs, including Flex First, performance, promotion and compensation review cycles, and our wide range of benefits and time off programs, will all continue.

We'll stay focused on delivering the great work we have underway, so please continue working with your teams and managers on your existing responsibilities and priorities.

Recognizing your role in what comes next

Each of you plays a vital role in sustaining Instacart's momentum and continuing to deliver for the people and partners who count on us. We also recognize that navigating a period of change takes focus and commitment.

To demonstrate our commitment to you and reward the work ahead, we have agreed with DoorDash that every active full-time employee will be eligible for a deal specific cash retention program, sized as a percentage of base salary. Details, including amount and payment dates, will be available at go/dealupdates by Monday, November 2.

What we don't know yet

Decisions about org structure, roles and reporting lines after the transaction closes haven't been made and won't be determined until then.

Our commitment is to communicate openly, distinguish what's decided from what's still being worked through, and share updates as we have more information. We won't speculate or make promises we can't stand behind.

Where to find information

Today is the beginning of an ongoing conversation. We're putting several resources in place to help you stay informed and ask questions:

Thank you for everything you're doing for Instacart and for one another.

Michael

[Important Information]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and

Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Social Media Posts

The following social media posts by Instacart and Instacart executives were made available in connection with the transaction beginning on October 29, 2026.

Corporate LinkedIn Post

We're excited to announce that Instacart has entered into a definitive agreement to be acquired by DoorDash.

By bringing together @DoorDash's global consumer reach and logistics capabilities with Instacart's purpose-built grocery technology and trusted retailer and brand relationships, we will accelerate our transformation of the grocery industry. Retailers and brands will have better tools to compete and grow, consumers will have more access to affordable groceries, and shoppers will have more ways to earn.

We are incredibly proud of what our teams at Instacart have accomplished and look forward, with DoorDash, to accelerating innovation across the grocery industry and making online grocery more seamless and affordable for the millions of households we serve. Read more about today's announcement here.

CEO LinkedIn Post

Today is an important milestone for Instacart, and one I'm incredibly excited to share. We have just announced that Instacart signed an agreement to be acquired by DoorDash. Having been part of Instacart's journey for the past seven years, I've seen firsthand what makes this company so special.

We've built a differentiated grocery technology platform, forged trusted relationships with customers, retailers, and brands, created meaningful work opportunities for shoppers, and brought together an extraordinary team that continues to push the boundaries of what's possible in grocery.

I want to thank our incredible employees, shoppers, and partners who have helped make Instacart what it is today. Your dedication, innovation, and commitment to serving customers have brought us to this moment. I'm deeply grateful for everything we've built together and excited about what lies ahead for Instacart as part of DoorDash.

[LINK TO COMPANY BLOG POST]

CFO LinkedIn Post

A significant milestone for @Instacart! Our purpose-built grocery technology and trusted retailer and brand relationships, combined with @DoorDash's global consumer reach and logistics capabilities, will position us to increase competition and accelerate innovation across the grocery industry.

Better tools for retailers and brands, more access to affordable groceries for consumers, and more ways for shoppers to earn. Grateful to the team that built the foundation for this moment!

[LINK TO COMPANY BLOG POST]

General Manager of Advertising LinkedIn Post

This is an exciting day for Instacart! I'm incredibly proud of what we've built together at this company and on our Ads team. I'm grateful for all of our partners who have played a huge role in this journey. With DoorDash, we will take it even further. Looking forward to what's ahead!!

[LINK TO COMPANY BLOG POST]

Chief Marketing Officer LinkedIn Post

Big news for @Instacart today: we just announced that we've entered into a definitive agreement to be acquired by @DoorDash!

Together with DoorDash, we will be able to create even more opportunities for our retail and brand partners and an even better experience for customers and shoppers. Grateful for the team behind this and excited for what's next!

[LINK TO COMPANY BLOG POST]

VP of Global Advertising Sales LinkedIn Post

Big news for Instacart today: we just announced that we've entered into a definitive agreement to be acquired by DoorDash.

Together with DoorDash, we will be able to create even more opportunities for our Brand and Retail partners - and an even better experience for customers and shoppers. Grateful for the team behind this and excited for what's next! Here we go!

[LINK TO COMPANY BLOG POST]

VP of Policy & Government Affairs LinkedIn Post

Today marks an important step for @Instacart. Bringing @DoorDash's global consumer reach together with our grocery technology will accelerate innovation across the grocery industry, giving local businesses the tools they need to compete, creating more earnings opportunities for shoppers and making online grocery more accessible and affordable for millions of households.

[LINK TO COMPANY BLOG POST]

Chief Commercial Officer LinkedIn Post

Proud to share that we've entered into a definitive agreement to be acquired by @DoorDash! Retailers have trusted us to help them compete, and together with DoorDash, we will be able to create even more opportunities for our retail partners and advance the future of grocery. Excited for what's next!

[LINK TO COMPANY BLOG POST]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating

performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart General Frequently Asked Questions

Media

Investors / Analysts

Employees

Shoppers

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could

adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Retailer Communications Toolkit

The Company intends to use the following talking points in calls with certain of its top retailers beginning on or around October 29, 2026.

Talking Points

Overview

Top Messages

Closing

Anticipated Q&A

Instacart Retailer Outreach Emails

The Company intends to send the following emails to key retailers on or around October 29, 2026.

For 1:1 Emails

SUBJ: An Update from Instacart

Hi [Name],

I am personally reaching out to share that today we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business and for partners like you. By bringing together Instacart's purpose-built grocery technology and trusted retailer and brand relationships with DoorDash's global consumer reach and logistics capabilities, we'll be better positioned to help [INSERT GROCER NAME] reach more customers, grow sales, and compete more effectively.

Importantly, nothing changes about our partnership as a result of today's announcement. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes, and our team remains focused on supporting your business as we do today.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results

predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

For Batch Sending to Longtail Retailers

SUBJ: An Update from Instacart

Hi [Name],

I am personally reaching out to share that today we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business and for partners like you. By bringing together Instacart's purpose-built grocery technology and trusted retailer and brand relationships with DoorDash's global consumer reach and logistics capabilities, we'll be better positioned to help your business reach more customers, grow sales, and compete more effectively.

Importantly, nothing changes about our partnership as a result of today's announcement. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes, and our team remains focused on supporting your business as we do today.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger

Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER

RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Brand Partnerships Communications Toolkit

The Company intends to use the following talking points in calls with certain of its top brand partners beginning on or around October 29, 2026.

Talking Points

Opening

Top Messages

Closing

Anticipated Q&A

1. How will the combination benefit our advertising business?

2. Will our existing campaigns or advertising agreements change?

3. Will we be able to advertise across both Instacart and DoorDash?

4. Will the combination change how we measure advertising performance?

5. What will happen to our data and existing information-sharing arrangements?

6. Will Instacart continue investing in its advertising business?

7. Will Instacart continue investing in the consumer experience and growth?

8. What does the regulatory review process mean for our advertising partnership?

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability

of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Advertiser Outreach Emails

The Company intends to send the following emails to key retailers on or around October 29, 2026.

For 1:1 Emails

SUBJ: An Update from Instacart

Hi [Name],

I am personally reaching out to share that today we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business and for partners like you. By bringing together Instacart's purpose-built grocery technology and trusted retailer and brand relationships with DoorDash's global consumer reach and logistics capabilities, we'll be better positioned to help [INSERT BRAND NAME] reach more consumers, grow sales, and compete more effectively.

Importantly, nothing changes about our partnership as a result of today's announcement. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes, and our team remains focused on supporting your business as we do today.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference, and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

For Batch Sending to Longtail Brands

SUBJ: An Update from Instacart

Hi [Name],

Today, we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business and for partners like you. By bringing together Instacart's purpose-built grocery technology and trusted retailer and brand relationships with DoorDash's global consumer reach and logistics capabilities, we'll be better positioned to help your brand reach more consumers, grow sales, and compete more effectively.

Importantly, nothing changes about our partnership as a result of today's announcement. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes, and our team remains focused on supporting your business as we do today.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed

Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Business and Health Communications Toolkit

The Company intends to use the following talking points in calls with certain of its key partners beginning on or around October 29, 2026.

Talking Points

Overview

Distributor Key Messages

Businesses Key Messages

Health Partner Key Messages

Closing

Anticipated Q&A

1. How will this affect our existing partnership with Instacart?

2. How will the combination benefit our business?

3. Will Instacart continue investing in its offerings?

4. Will our existing agreements, pricing, or commercial terms change?

5. Will the combination affect our ability to work with other delivery platforms?

6. Will we have to use DoorDash's delivery services or other products?

7. Will the companies combine their delivery networks? Will the companies deprecate the Instacart App?

8. Could the transaction weaken my negotiating power with you? How do I know you won't increase costs once the transaction closes?

9. Will the combination change how Instacart uses or protects our data?

10. What happens if the transaction takes longer than expected or does not close?

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating

performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart ICB/Health Partner Outreach Emails

The Company intends to send the following emails to key partners on or around October 29, 2026.

For 1:1 Emails to Distributors

SUBJ: An Update from Instacart

Hi [Name],

I am personally reaching out to share that today we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business and for partners like you. By bringing together Instacart's purpose-built food & beverage technology and trusted retailer and brand relationships with DoorDash's global consumer reach and logistics capabilities, we'll be better positioned to support [INSERT PARTNER NAME]'s [customers/operators].

Importantly, nothing changes about our partnership as a result of today's announcement. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes, and our team remains focused on serving your business as we do today.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of

consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the

directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

For 1:1 Emails to Larger Business Customers

SUBJ: An Update from Instacart

Hi [Name],

I am personally reaching out to share that today we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business, and we believe we'll be even better positioned to support [INSERT PARTNER NAME]'s business over the long term.

Importantly, nothing changes about our partnership as a result of today's announcement as Instacart and DoorDash continue operating as separate, independent companies until the transaction closes. Our team remains focused on providing you with the high-quality service you've come to expect from us.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-

looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared

effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

For 1:1 Emails to Health Partners

SUBJ: An Update from Instacart

Hi [Name],

I am personally reaching out to share that today, we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business and for partners like you. By bringing together Instacart's purpose-built grocery technology and trusted retailer and brand relationships with DoorDash's global consumer reach and logistics capabilities, we'll be better positioned to support [INSERT PARTNER NAME]'s [clients/users/patients].

Importantly, nothing changes about our partnership as a result of today's announcement. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes, and our team remains focused on serving your business as we do today.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and

the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

For Batch Sending to Business Profile Customers

SUBJ: An Update from Instacart Business

Hi [Name],

We announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business, and we believe we'll be even better positioned to support you over the long term.

Importantly, nothing changes about our relationship as a result of this announcement, as Instacart and DoorDash continue operating as separate, independent companies until the transaction closes. Our team remains focused on providing you with the high-quality features and services you've come to expect from us.

For Instacart+ members, your benefits remain the same. You can continue using the app and shopping from your favorite stores, as usual.

We value our relationship and look forward to continuing to build for your business needs.

Best,

The Instacart Team

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Commercial Partnerships Communications Toolkit

The Company intends to use the following talking points in calls with certain of its top commercial partners beginning on or around October 29, 2026.

Talking Points

Anticipated Q&A

1. How will the transaction affect our existing partnership with Instacart?

2. Will our existing agreements or commercial terms change?

3. Will our day-to-day contacts or the way we work together change?

4. What opportunities will the combination create for our partnership?

5. Will we need to begin working with DoorDash before the transaction closes?

6. Will confidential commercial information shared with Instacart be shared with DoorDash?

7. What happens if the regulatory review takes longer than expected?

8. When will we learn more about what the combination means for our partnership?

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability

of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from

the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Commercial Partner Outreach Emails

The Company intends to send the following emails to key commercial partners on or around October 29, 2026.

For 1:1 Emails

SUBJ: An Update from Instacart

Hi [Name],

I am personally reaching out to share that today we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business and for partners like you. By bringing together Instacart's purpose-built grocery technology and trusted retailer and brand relationships with DoorDash's global consumer reach and logistics capabilities, we'll be better positioned to support [INSERT PARTNER NAME]'s business.

Importantly, nothing changes about our partnership as a result of this announcement. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes, and our team remains focused on supporting your business as we do today.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating

performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other

relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

For Batch Sending to Longtail Partners (if applicable)

SUBJ: An Update from Instacart

Hi [Name],

Today, we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

We're excited about what this means for our business and for partners like you. By bringing together Instacart's purpose-built grocery technology and trusted retailer and brand relationships with DoorDash's global consumer reach and logistics capabilities, we'll be better positioned to support your business.

Importantly, nothing changes about our partnership as a result of this announcement. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes, and our team remains focused on supporting your business as we do today.

We value our relationship and look forward to continuing to build on our work together. Sharing a link to today's announcement for your reference and would be happy to connect if you have any questions.

Best,

[Name]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other

conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Customer Communications Toolkit

The Company intends to use the following talking points in calls with certain key customers on or around October 29, 2026.

Talking Points

Anticipated Q&A

1. What does this announcement mean for me?

2. Will I still be able to use the Instacart app?

3. Will grocery prices or delivery fees increase?

4. Will I still be able to shop from my favorite grocery stores?

5. Will my membership, account, or loyalty benefits change?

6. Will Instacart and DoorDash become one app?

7. When will the transaction close?

Instacart CRM Email Messages

The Company intends to send the following emails to key customers on or around October 29, 2026.

Customer CRM Email

SUBJ: An Update from Instacart

Hi [Name],

Today, we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

Our goal has always been to make grocery shopping more affordable, convenient, and accessible. By bringing together Instacart and DoorDash, we see an opportunity to do even more - helping lower grocery costs, connecting you with more local stores, and making it easier to find groceries that fit your budget.

Nothing changes about how you shop with Instacart because of this announcement. You can continue using the app and shopping from your favorite stores, as usual.

We're excited about what the combined company could make possible, and we'll keep you updated as we have more to share.

Thank you for shopping with us.

The Instacart Team

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result

in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Customer Instacart+ CRM Email

SUBJ: An Update from Instacart

Hi [Name],

Today, we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an important new chapter for our company.

Our goal has always been to make grocery shopping more affordable, convenient, and accessible. By bringing together Instacart and DoorDash, we see an opportunity to do even more - helping lower grocery costs, connecting you with more local stores, and making it easier to find groceries that fit your budget.

Nothing changes about how you shop with Instacart because of this announcement and your Instacart+ membership benefits remain the same. You can continue using the app and shopping from your favorite stores, as usual.

We're excited about what the combined company could make possible, and we'll keep you updated as we have more to share.

Thank you for being an Instacart+ member. We appreciate you shopping with us.

[The Instacart Team]

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward- looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Shopper Communications Toolkit

The Company intends to use the following talking points in calls with Instacart shoppers on or around October 29, 2026.

Talking Points

Shopper FAQ

1. What does this mean for Instacart shoppers? How will it affect earnings opportunities?

2. Will the transaction lead to changes in delivery routing or order assignment algorithms?

3. Will the companies combine their delivery networks? Will shoppers be able to accept orders across both platforms?

Instacart Shopper Email

The Company intends to send the following emails to Instacart shoppers on or around October 29, 2026.

Shopper Email

SUBJ: An Update from Instacart

Hi [Name],

Today, we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an exciting new chapter for our company.

Importantly, nothing changes today about how you shop with Instacart. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes by the end of 2027 or in the first half of 2028, and there are no immediate changes to how you accept or deliver orders. We'll keep you updated as relevant information becomes available.

Our goal has always been to make it easy for shoppers like you to flexibly earn with Instacart. By bringing together Instacart and DoorDash, we see an opportunity to create even more opportunities for you, such as more orders, closer to where you are, so that you can decide which orders best meet your needs.

We're excited about what the combined company could make possible, and we'll keep you updated as we have more to share.

Thank you for all that you do for Instacart and its customers.

Chris Rogers

CEO, Instacart

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of

Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY

STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart Shopper Blog

The following blog post was made available in connection with the transaction beginning on October 29, 2026.

Instacart + DoorDash News: What it Means For Shoppers Today

Today, we announced that Instacart has entered into a definitive agreement to be acquired by DoorDash, marking an exciting new chapter for our company.

Importantly, nothing changes today about how you shop with Instacart. Instacart and DoorDash will continue operating as separate, independent companies until the transaction closes by the end of 2027 or in the first half of 2028, and there are no immediate changes to how you accept or deliver orders. We'll keep you updated as relevant information becomes available.

Our goal has always been to make it easy for shoppers like you to flexibly earn with Instacart. By bringing together Instacart and DoorDash, we see an opportunity to create even more opportunities for you, such as more orders, closer to where you are, so that you can decide which orders best meet your needs.

We're excited about what the combined company could make possible, and we'll keep you updated as we have more to share. You can read more about today's announcement in the joint press release here.

Thank you for all that you do for Instacart and its customers.

Chris Rogers

CEO, Instacart

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit

ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

General FAQ

The following FAQ were made available in connection with the transaction beginning on October 29, 2026.

Why are DoorDash and Instacart coming together, and why now? DoorDash and Instacart share a mission to help local businesses succeed, and together will give merchants of all sizes the tools they need to compete against the world's large, vertically integrated retail platforms.

What should DoorDash and Instacart consumers expect? Together, DoorDash and Instacart will provide more selection, more choice, and faster, more affordable delivery options. Members of DashPass and Instacart+ will no longer pay two separate subscription fees, saving consumers an estimated $100M per year on membership fees alone.

What does this mean for Dashers and Shoppers? More orders for local stores means more orders for both Dashers and Shoppers to fulfill and more ways to earn. At close, Shoppers will maintain the flexibility to choose how much they work, see the information they need to decide which batches to accept, and continue to benefit from Cart Star ratings. Take on DoorDash orders, or just Shop - the choice is theirs.

What does this mean for merchants? Together, DoorDash and Instacart will give local grocers and retailers of every size the best of both: DoorDash's delivery network, and Instacart's grocery and fulfillment technology. They will have the tools the biggest players have with faster, more affordable delivery options than they do today.

Will grocery prices go up for consumers? We expect the opposite. We intend to use the combination to help make bigger investments in affordability, which in turn will help create more sales for local stores and more earnings opportunities for Dashers and Shoppers.

Will the Instacart app go away? The Instacart app and brand will stay intact.

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the

macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.

Instacart enters into definitive agreement to be acquired by DoorDash in a cash-and-stock transaction with an equity value of approximately $17 billion

Additionally, in a separate release issued today, Instacart announced that it has entered into a definitive agreement to be acquired by DoorDash, Inc. (NASDAQ: DASH). The cash-and-stock transaction values Instacart at an equity value of approximately $17 billion.

In light of the announced agreement to be acquired by DoorDash, Instacart has cancelled its earnings conference call previously scheduled for November 5, 2026.

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the future financial or operating performance of DoorDash, Inc. ("DoorDash") or Maplebear Inc. (the "Company"). In some cases, you can identify forward-looking statements because they contain words such as "may," "aim," "will," "should," "expect," "plan," "try," "anticipate," "could," "would," "intend," "target," "project," "contemplate," "believe," "estimate," "predict," "potential," "toward," or "continue" or the negative of these words or other similar terms or expressions that concern DoorDash's or the Company's expectations, strategies, plans, or intentions. Forward-looking statements in this communication include, but are not limited to, statements regarding the proposed acquisition of the Company by DoorDash pursuant to the Agreement and Plan of Merger among DoorDash, Ibiza Merger Sub, Inc., a wholly owned subsidiary of DoorDash, and the Company (the "Merger Agreement" and such transaction, the "Proposed Transaction"); the expected financing of the Proposed Transaction; the expected timing and likelihood of completion of the Proposed Transaction on the terms contemplated or at all; the expected benefits, synergies, and strategic value of the Proposed Transaction, including the future financial and operating performance of the combined company; DoorDash's plans and expectations regarding the integration of the Company; and the plans, objectives, expectations, and intentions of DoorDash and the Company with respect to the Proposed Transaction, the period of pendency of the Proposed Transaction, and the combined company. These expectations and beliefs may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks and uncertainties related to: the

occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay a termination fee or reimburse expenses; the ability to obtain, or delays in obtaining, governmental and regulatory approvals required for the Proposed Transaction, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and any required clearance or approval under the Competition Act (Canada) or under the Israeli Economic Competition Law-1988, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Proposed Transaction; the ability to obtain the requisite approval of the Company stockholders; the satisfaction or waiver of the other conditions to the closing of the Proposed Transaction; delays in completing the Proposed Transaction, or the failure to complete the Proposed Transaction at all; the ability to obtain adequate financing or financings on satisfactory terms and the effect of any indebtedness incurred in connection with the Proposed Transaction on the combined company's credit ratings; the ability to successfully integrate the Company's business and to realize the anticipated cost savings, synergies, and other benefits of the Proposed Transaction within the expected timeframe or at all; the effect of any announcement relating to the Proposed Transaction on the market price of DoorDash's or the Company's common stock; fluctuations in the market price of DoorDash common stock and the possibility that the Company stockholders may receive a form of consideration different from what they elect as a result of proration; the nature, cost, and outcome of any litigation related to the Proposed Transaction; the risk that the Proposed Transaction disrupts current plans and operations or diverts management's attention from ongoing business operations and opportunities; adverse reactions or changes to business or employee relationships resulting from the announcement, pendency, or completion of the Proposed Transaction; the ability of DoorDash and the Company to retain and hire key personnel; economic, financial, social, or political conditions that could adversely affect DoorDash or the Company; the macroeconomic environment and geopolitical uncertainty; competition; changes in legislation or governmental regulations; legal proceedings and regulatory matters and developments; and DoorDash's and the Company's respective brands and reputations. The forward-looking statements contained in this communication are also subject to other risks and uncertainties that could cause actual results to differ from the results predicted, including those more fully described in the filings of DoorDash and the Company with the Securities and Exchange Commission (the "SEC"), including DoorDash's and the Company's respective Annual Reports on Form 10-K for the year ended December 31, 2025 and quarterly reports on Form 10-Q filed thereafter, as well as in the registration statement on Form S-4 and the proxy statement/prospectus described below when they become available. All forward-looking statements in this communication are based on information available to DoorDash and the Company and assumptions and beliefs as of the date hereof, and each of DoorDash and the Company disclaims any obligation to update any forward-looking statements, except as required by law.

Important Additional Information Will Be Filed with the SEC and Where to Find It

In connection with the Proposed Transaction, DoorDash intends to file with the SEC a registration statement on Form S-4 (the "Registration Statement") to register the shares of DoorDash common stock to be issued in connection with the Proposed Transaction. The Registration Statement will include a proxy statement of the Company that also constitutes a prospectus of DoorDash (the "proxy statement/prospectus"). Each of DoorDash and the Company may also file other relevant documents with the SEC regarding the Proposed Transaction. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to stockholders of the Company as of the record date established for voting on the Proposed Transaction. This communication is not a substitute for the Registration Statement, the proxy statement/prospectus, or any other document that DoorDash or the Company may file with the SEC in connection with the Proposed Transaction. INVESTORS AND SECURITY HOLDERS OF DOORDASH AND THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING THE PROXY STATEMENT/PROSPECTUS AND DOCUMENTS INCORPORATED THEREIN BY REFERENCE, AND ANY OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT DOORDASH, THE COMPANY, THE PROPOSED TRANSACTION, THE RISKS RELATED THERETO, AND RELATED MATTERS.

Investors and security holders will be able to obtain free copies of the Registration Statement and the proxy statement/prospectus (when available), as each may be amended or supplemented from time to time, and other documents containing important information about DoorDash, the Company, and the Proposed Transaction, once such

documents are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents filed with the SEC by DoorDash, including the proxy statement/prospectus (when available), will be available free of charge on DoorDash's investor relations website at ir.doordash.com. Copies of the documents filed with the SEC by the Company, including the proxy statement/prospectus (when available), will be available free of charge on the Company's investor relations website at investors.instacart.com.

Participants in the Solicitation

DoorDash, the Company, and certain of their respective directors, executive officers, and other members of management and employees may be deemed to be participants in the solicitation of proxies from the Company's stockholders in respect of the Proposed Transaction under the rules of the SEC. Information about the directors and executive officers of DoorDash, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in DoorDash's Annual Report on Form 10-K for the year ended December 31, 2025, its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, and its definitive information statement on Schedule 14C filed with the SEC on August 27, 2026 (including the beneficial ownership information set forth therein), each filed with the SEC. Information about the directors and executive officers of the Company, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 and its definitive proxy statement on Schedule 14A for its 2026 Annual Meeting of Stockholders, each filed with the SEC. To the extent holdings of securities by the directors and executive officers of DoorDash or the Company have changed from the amounts reflected therein, such changes have been or will be reflected on Initial Statements of Beneficial Ownership of Securities on Form 3, Statements of Changes in Beneficial Ownership on Form 4, or Annual Statements of Changes in Beneficial Ownership of Securities on Form 5 subsequently filed with the SEC.

Other information regarding the interests of participants in the proxy solicitation, which may differ from the interests of DoorDash and the Company stockholders generally, will be contained in the Registration Statement, the proxy statement/prospectus, and other relevant materials to be filed with the SEC regarding the Proposed Transaction when they become available. Investors and security holders should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from DoorDash or the Company using the sources indicated above.

No Offer or Solicitation

This communication is for informational purposes only and is not intended to and shall not constitute an offer to sell, buy, or exchange, or the solicitation of an offer to sell, subscribe for, buy, or exchange any securities, or a solicitation of any vote or approval, in any jurisdiction, nor shall there be any sale, issuance, exchange, or transfer of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities, including the shares of DoorDash common stock to be issued as part of the merger consideration in the Proposed Transaction, shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, and otherwise in accordance with applicable law.