[Form 3] DENNY'S Corp Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Denny’s Corp (DENN): Ownership disclosure by JCP-affiliated group. JCP Investment entities and James C. Pappas filed a joint Section 16 report showing indirect beneficial ownership of 455,717 shares by JCP Investment Partnership, LP and 373,774 shares in accounts managed by JCP Investment Management, LLC. The filers note they were part of a Section 13(d) group that, as of October 17, 2025, collectively held over 10% of Denny’s common stock. They further state that, as of October 21, 2025, the group no longer collectively owns more than 10%.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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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1. Name and Address of Reporting Person^*

JCP Investment Management, LLC

(Last) (First) (Middle)

1177 WEST LOOP SOUTH

SUITE 1320

(Street)

HOUSTON TX 77027

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/17/2025

3. Issuer Name and Ticker or Trading Symbol
DENNY'S Corp [ DENN ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			See Footnotes 1 and 2

5. If Amendment, Date of 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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, $0.01 par value(1)(2)	455,717	I	By: JCP Investment Partnership, LP(3)
Common Stock, $0.01 par value(1)(2)	373,774	I	By: Managed Accounts of JCP Investment Management, LLC(4)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

JCP Investment Management, LLC

(Last) (First) (Middle)

1177 WEST LOOP SOUTH

SUITE 1320

(Street)

HOUSTON TX 77027

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			See Footnotes 1 and 2

1. Name and Address of Reporting Person^*

JCP Investment Partnership, LP

(Last) (First) (Middle)

1177 WEST LOOP SOUTH

SUITE 1320

(Street)

HOUSTON TX 77027

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			See Footnotes 1 and 2

1. Name and Address of Reporting Person^*

JCP Investment Partners, LP

(Last) (First) (Middle)

1177 WEST LOOP SOUTH

SUITE 1320

(Street)

HOUSTON TX 77027

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			See Footnotes 1 and 2

1. Name and Address of Reporting Person^*

JCP Investment Holdings, LLC

(Last) (First) (Middle)

1177 WEST LOOP SOUTH

SUITE 1320

(Street)

HOUSTON TX 77027

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			See Footnotes 1 and 2

1. Name and Address of Reporting Person^*

Pappas James C

(Last) (First) (Middle)

1177 WEST LOOP SOUTH

SUITE 1320

(Street)

HOUSTON TX 77027

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			See Footnotes 1 and 2

Explanation of Responses:

1. This Form 3 is filed jointly by JCP Investment Partnership, LP ("JCP Partnership"), JCP Investment Partners, LP ("JCP Partners"), JCP Investment Holdings, LLC ("JCP Holdings"), JCP Investment Management, LLC ("JCP Management") and James C. Pappas (collectively, the "Reporting Persons"). Each of the Reporting Persons are members of a Section 13(d) group that as of October 17, 2025 collectively beneficially owned more than 10% of the Issuer's outstanding shares of Common Stock. The Reporting Persons disclaim beneficial ownership of the securities of the Issuer owned directly by other members of the Section 13(d) group and this report shall not be deemed an admission that the Reporting Persons are the beneficial owners of such securities for purposes of Section 16 or for any other purpose. Further, each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein except to the extent of his or its pecuniary interest therein.

2. As of October 21, 2025, the Schedule 13(d) group no longer collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock.

3. Represents shares of Common Stock owned directly by JCP Partnership. JCP Partners, as the general partner of JCP Partnership, may be deemed to beneficially own the shares of Common Stock owned directly by JCP Partnership. JCP Holdings, as the general partner of JCP Partners, may be deemed to beneficially own the shares of Common Stock owned directly by JCP Partnership. JCP Management, as the investment manager of JCP Partnership, may be deemed to beneficially own the shares of Common Stock owned directly by JCP Partnership. Mr. Pappas, as the managing member of JCP Management and the sole member of JCP Holdings, may be deemed to beneficially own the shares of Common Stock owned directly by JCP Partnership.

4. Represents shares of Common Stock held in certain accounts managed by JCP Management (the "JCP Accounts"). JCP Management, as the investment manager of the JCP Accounts, may be deemed to beneficially own the shares of Common Stock held in the JCP Accounts. Mr. Pappas, as the managing member of JCP Management, may be deemed to beneficially own the shares of Common Stock held in the JCP Accounts.

	JCP Investment Management, LLC, By: /s/ James C. Pappas, Managing Member	10/21/2025
	JCP Investment Partnership, LP, By: JCP Investment Management, LLC, Investment Manager, By: /s/ James C. Pappas, Managing Member	10/21/2025
	JCP Investment Partners, LP, By: JCP Investment Holdings, LLC, General Partner, By: /s/ James C. Pappas, Sole Member	10/21/2025
	JCP Investment Holdings, LLC, By: /s/ James C. Pappas, Sole Member	10/21/2025
	/s/ James C. Pappas	10/21/2025
	** Signature of Reporting Person	Date
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