RED ROBIN GOURMET BURGERS INC

(Former name or former address, if changed since last report.)

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Securities registered pursuant to Section 12(b) of the Exchange Act:

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Emerging growth company☐

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ITEM 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

Appointment of Tiffany Dutton as Chief Accounting Officer

On September 15, 2026, Red Robin Gourmet Burgers, Inc. (the “Company”) appointed Tiffany Dutton to serve as the Company’s Chief Accounting Officer, assuming the responsibilities of principal accounting officer, effective September 21, 2026. Ms. Dutton will report to Mark Graff, Chief Financial Officer.

Prior to her appointment as Chief Accounting Officer, Ms. Dutton, age 46, served as an accounting consultant providing technical and general accounting services to public and private companies since February 2022, during which time she has supported Red Robin as interim Chief Accountant since October 2025. Previously, she served at Capital Senior Living Corporation (now Sonida Senior Living) as Senior Vice President and Principal Accounting Officer from December 2020 to February 2022 and as Vice President, Accounting and Financial Reporting, from January 2020 to December 2020. Prior to that, she held various accounting and finance roles with companies including Adeptus Health, RealPage, and Pier 1 Imports. She began her career as a manager in the assurance and advisory business services practice of Ernst & Young LLP and is a certified public accountant.

In connection with her appointment, Ms. Dutton will receive the following material elements of compensation: (i) an annual base salary of $300,000, (ii) eligibility to receive an annual bonus with a target of 60% of her annual base salary, prorated for 2026 based on her date of hire, in accordance with the Company’s Annual Corporate Bonus Plan (her actual annual bonus to be determined following the conclusion of each fiscal year based on achievement of specific Company targets established by the Company’s board of directors), and (iii) an equity award of restricted stock units with a target value of $100,000 vesting after one year, with eligibility to participate in the Company’s Long-Term Incentive (LTI) plan with a target opportunity equal to 60% of her annual base salary beginning in 2027. As it does with all directors and officers, the Company will provide Ms. Dutton with its standard indemnification agreement. See the Company’s Form of Indemnification Agreement filed with the Securities and Exchange Commission on July 12, 2002, as Exhibit 10.20 to the Company’s Registration Statement on Form S-1/A. Ms. Dutton will also be eligible to participate in the Company’s Executive Severance Plan, as described under the heading “Employment Agreements, Separation Arrangements, and Executive Severance Plan―Executive Severance Plan” in the Company’s Definitive Proxy Statement filed with the SEC on March 26, 2026, and which description is incorporated by reference herein, with a “Change in Control Cash Severance Multiplier” of 1.0, a “Change in Control Benefits Continuation Period” of 12 months, a “Non-Change in Control Cash Severance Multiplier” of 1.0, a “Non-Change in Control Benefits Continuation Period” of 12 months, and a “Restricted Period” of 12 months in the event of a Change in Control Qualifying Termination or 12 months in the event of a Non-Change in Control Qualifying Termination (in each case, as such terms are defined in the Executive Severance Plan).

There are no arrangements or understandings between Ms. Dutton and any other persons pursuant to which she was appointed as Chief Accounting Officer, no family relationships among any of the Company’s directors or executive officers and Ms. Dutton, and she has no direct or indirect interest in any transaction required to be disclosed pursuant to Item 404(a) of Regulation S-K promulgated under the Securities Act of 1933, as amended.