Additional Proxy Soliciting Materials (Form DEFA14A)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

(Check the appropriate box):

DENNY'S CORPORATION

(Name of Registrant as Specified In Its Charter)

N/A

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

Important Information

The following communications relate to the proposed acquisition of Denny's Corporation, a Delaware corporation (the "Company") by Sparkle Topco Corp., a Delaware corporation ("Buyer"), which is controlled by funds managed by affiliates of TriArtisan Capital Advisors LLC. The Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Buyer and Sparkle Acquisition Corp., a Delaware corporation and wholly owned subsidiary of Buyer ("Merger Sub").

On November 4, 2025, the Company posted on LinkedIn the below post with information about the proposed transaction.

Additional Information Regarding the Proposed Transaction and Where to Find It

In connection with the proposed transaction between Denny's Corporation and TriArtisan Capital Advisors LLC, Denny's Corporation will file with the Securities and Exchange Commission (the "SEC") a proxy statement on Schedule 14A relating to a special meeting of its stockholders. Additionally, Denny's Corporation may file other relevant materials with the SEC in connection with the proposed transaction. INVESTORS AND SECURITYHOLDERS OF THE COMPANY ARE URGED TO READ THE PROXY STATEMENT AND ANY OTHER RELEVANT MATERIALS FILED OR THAT WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE MATERIALS AND DOCUMENTS INCORPORATED BY REFERENCE THEREIN, CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND RELATED MATTERS. A definitive Proxy Statement will be sent to the Company's stockholders. Investors and securityholders will be able to obtain the Proxy Statement free of charge from the SEC's website or from the Company. The documents filed by the Company with the SEC may be obtained free of charge on the Company's website at the Investor Relations section of https://investor.dennys.com/overview/default.aspx or at the SEC's website at www.sec.gov. These documents may also be obtained free of charge from the Company by requesting them from Investor Relations by email at [email protected], or by telephone at 877.784.7167. This document shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale 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 offering of securities shall be made except by means of a prospectus meeting the requirements of the Securities Act of 1933, as amended.

Participants in the Solicitation

Denny's Corporation and certain of its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of Denny's Corporation in respect of the proposed transaction and any other matters to be voted on at the special meeting. Information about TriArtisan Capital Advisors LLC's directors and executive officers, including a description of their direct interests, by security holdings or otherwise, will be included in the proxy statement (when available). Information about Denny's Corporation and its directors and executive officers can be found in (i) Denny's Corporation's Annual Report on Form 10-K for the fiscal year ended December 25, 2024, which was filed with the SEC on February 24, 2025, (ii) Denny's Corporation's proxy statement for its 2025 annual meeting of stockholders, which was filed with the SEC on April 3, 2025, and (iii) Denny's Corporation's other filings with the SEC, including any statements of beneficial ownership on Form 3, Form 4 or Form 5, which may be obtained free of charge on EDGAR at www.sec.gov and the Denny's Corporation website at https://investor.dennys.com/financials/sec-filings/default.aspx.

No Offer or Solicitation

This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale 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 shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

Cautionary Statement Regarding Forward-Looking Statements

This document contains forward-looking statements, including statements regarding the proposed transaction. From time to time, oral or written forward-looking statements may also be included in other information released to the public. These forward-looking statements are intended to provide management's current expectations or plans for our future operating and financial performance, based on assumptions currently believed to be valid. Forward-looking statements often contain words such as "may," "can," "could," "would," "should," "expects," "anticipates," "estimates," "intends," "plans," "believes," "seeks," "will," "is likely to," "scheduled," "positioned to," "continue," "forecast," "aim," "goal," "target," "predicting," "projection," "potential" or similar expressions, although not all forward-looking statements contain these words. Forward-looking statements may include references to goals, plans, strategies, objectives, projected costs or savings, anticipated future performance, results, events or transactions of the Company and the expected timing of the proposed transaction and other statements that are not strictly historical in nature. These forward-looking statements are based on management's current expectations, forecasts and assumptions and could ultimately prove inaccurate. This means the forward-looking statements involve a number of risks and uncertainties that could cause actual results to differ materially from those expressed or implied in the forward-looking statements, including, but not limited to: uncertainties as to the timing of the proposed transaction; uncertainties as to how many of the Company's stockholders will vote in favor of the proposed transaction including the possibility that the Company's stockholders may not approve the proposed transaction; the possibility that competing offers will be made; the ability to receive the required consents and regulatory approvals for the proposed transaction and to satisfy the other conditions to the closing of the transaction on a timely basis or at all; the risk that, prior to the completion of the transaction, the Company's business and its relationships with employees, collaborators, vendors and other business partners could experience significant disruption due to transaction-related uncertainty; the risk that stockholder litigation in connection with the transaction may result in significant costs of defense, indemnification and liability; negative effects of the announcement of the transaction on the market price of Company Shares and/or on the Company's business, financial condition, results of operations and financial performance; and the ability of the Company to retain and hire key personnel; and the risks and uncertainties pertaining to the Company's business, including those detailed under "Risk Factors" and elsewhere in the Company's public periodic filings with the SEC. There can be no assurance that the proposed transaction or any other transaction described above will in fact be consummated in the manner described or at all. Stockholders, potential investors and other readers are urged to consider these risks and uncertainties in evaluating forward-looking statements and are cautioned not to place undue reliance on the forward-looking statements. It is not possible to anticipate or foresee all risks and uncertainties, and investors should not consider any list of risks and uncertainties to be exhaustive or complete. For additional information on identifying factors that may cause actual results to vary materially from those stated in forward-looking statements, please see the Company's statements and reports on Forms 10-K, 10-Q and 8-K filed with or furnished to the SEC and other written statements made by the Company from time to time. The forward-looking information herein is given as of this date only and is qualified in its entirety by this cautionary statement, and the Company undertakes no obligation to revise or update it.