SCHEDULE 13D/A 0000921895-25-002888 0002036142 XXXXXXXX LIVE 2 Common Stock, $0.01 par value 11/07/2025 false 0000852772 24869P104 DENNY'S Corp

203 EAST MAIN STREET SPARTANBURG SC 29319

CHRISTOPHER MARTIN 281-915-2704 JUMANA CAPITAL INVESTMENTS LLC 1717 St. James Place, Suite 335 Houston TX 77056 RYAN NEBEL 212-451-2300 OLSHAN FROME WOLOSKY LLP 1325 Avenue of the Americas New York NY 10019 0002036142 N Jumana Capital Investments LLC OO N TX 0.00 0.00 0.00 0.00 0.00 N 0 OO 0002041913 N Martin Christopher Ross OO N X1 0.00 0.00 0.00 0.00 0.00 N 0 IN Common Stock, $0.01 par value DENNY'S Corp 203 EAST MAIN STREET SPARTANBURG SC 29319 Item 3 is hereby amended and restated to read as follows: The Reporting Persons no longer beneficially own any Shares. Item 5(a) is hereby amended and restated to read as follows: As of the date hereof, the Reporting Persons no longer beneficially own any Shares. Item 5(c) is hereby amended and restated to read as follows: The transactions in the securities of the Issuer by the Reporting Persons since the filing of Amendment No. 1 to the Schedule 13D are set forth in Exhibit 1 and are incorporated herein by reference. All of such transactions were effected in the open market unless otherwise noted therein. Item 5(e) is hereby amended and restated to read as follows: As of November 7, 2025, the Reporting Persons ceased to be the beneficial owners of more than 5% of the outstanding Shares. Item 6 is hereby amended to add the following: As previously disclosed, Jumana Capital purchased exchange-listed call options referencing an aggregate of 50,000 Shares, which had an exercise price of $5 per Share and an expiration date of February 20, 2026. As set forth in Exhibit 1, Jumana Capital sold all of such call options on November 7, 2025, and accordingly, Jumana Capital no longer has any exposure to such call options. As previously disclosed, Jumana Capital sold short exchange-listed put options referencing an aggregate of 120,000 Shares at an exercise price of $5 per Share, which have an expiration date of February 20, 2026. As set forth in Exhibit 1, put options referencing an aggregate of 20,600 Shares were purchased by Jumana Capital to cover such short position on November 7, 2025. Accordingly, Jumana Capital now has a short position with respect to such put options referencing an aggregate of 99,400 Shares. As previously disclosed, Jumana Capital sold short exchange-listed put options referencing an aggregate of 2,150,000 Shares at an exercise price of $5 per Share, which have an expiration date of May 15, 2026. As set forth in Exhibit 1, put options referencing an aggregate of 201,100 Shares were purchased by Jumana Capital to cover such short position on November 7, 2025. Accordingly, Jumana Capital now has a short position with respect to such put options referencing an aggregate of 1,948,900 Shares. Item 7 is hereby amended to add the following exhibit: 1 - Transactions in Securities. Jumana Capital Investments LLC /s/ Christopher R. Martin 11/10/2025 Martin Christopher Ross /s/ Christopher R. Martin 11/10/2025