Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Sundheim Daniel S. 2. Issuer Name and Ticker or Trading Symbol Maplebear Inc. [CART] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O D1 CAPITAL PARTNERS L.P., 9 WEST 57TH STREET, 36TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 05/22/2026 (Street) NEW YORK, NY 10019 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/22/2026 A 6,048(1) A $ 0 33,352 D(2)(3) Common Stock 26,678,056 I See footnotes(3)(4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Sundheim Daniel S. C/O D1 CAPITAL PARTNERS L.P. 9 WEST 57TH STREET, 36TH FLOOR NEW YORK, NY 10019	X	X
D1 Capital Partners L.P. 9 WEST 57TH STREET 36TH FLOOR NEW YORK, NY 10019		X		See Remarks

Signatures

D1 Capital Partners L.P., By: /s/ Amanda Hector, General Counsel and Chief Compliance Officer		05/27/2026
**Signature of Reporting Person		Date
/s/ Daniel S. Sundheim		05/27/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The shares represent restricted stock units received by Daniel Sundheim ("Mr. Sundheim"), which vest in full on the earlier of (i) the date of the Issuer's next annual meeting of stockholders (or the date immediately prior to such meeting if Mr. Sundheim's service as a director ends at such meeting due to Mr. Sundheim's failure to be re-elected or Mr. Sundheim not standing for re-election) or (ii) the one-year anniversary of the grant date, in each case subject to Mr. Sundheim's continued service through such date.
(2)	Represents securities held by Mr. Sundheim. Mr. Sundheim may be deemed to hold the securities reported herein for the benefit of certain funds and accounts to which the Investment Manager (as defined below) serves as the investment manager or investment consultant.
(3)	This statement is filed by D1 Capital Partners L.P. (the "Investment Manager") and Mr. Sundheim. The foregoing persons are hereinafter sometimes referred to as the "Reporting Persons." The filing of this statement should not be construed as an admission that any Reporting Person is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of the securities reported except to the extent of its pecuniary interest therein, if any.
(4)	The securities reported herein are held by D1 Master Holdco I LLC ("D1 Master Holdco"), certain related entities, GCM Grosvenor IC SPV, LLC ("GCM IC") and GCM Grosvenor IC SPV 2, LLC ("GCM IC 2"). The Investment Manager is a registered investment adviser and serves as the investment manager of private investment vehicles and accounts, including D1 Master Holdco, and as an investment consultant to certain private investment vehicles and accounts, including GCM IC and GCM IC 2 and may be deemed to beneficially own the securities held by D1 Master Holdco, GCM IC, and GCM IC 2. Mr. Sundheim may be deemed to beneficially own the reported securities by virtue of the fact that Mr. Sundheim indirectly controls the Investment Manager.
Remarks: The Investment Manager may be deemed to be a director by deputization for purposes of Section 16 under the Securities Exchange Act of 1934 by virtue of the fact that Mr. Sundheim currently serves on the board of directors of the Issuer.

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