X0508 4 2025-12-09 0001171759 RED ROBIN GOURMET BURGERS INC RRGB 0001481286 Mussetter Sarah A. 10000 E. GEDDES AVE. STE. 500 ENGLEWOOD CO 80112 false true false false CHIEF LEGAL OFFICER 0 Common Stock 2025-12-09 4 S 0 2800 3.8801 D 110677 D Represents the sale of shares by the issuer on behalf of the reporting person pursuant to automatic "sell-to-cover" transactions to cover tax withholding obligations and fees arising due to the vesting of 6,345 time-based restricted stock units that were granted to the reporting person on December 08, 2022 under the issuer's 2017 Performance Incentive Plan, as amended. These sell to cover transactions do not represent discretionary trades by the reporting person. The price reported is the actual sale price of the shares. The shares were sold in a single transaction at $3.8801 per share. Includes 81,817 time-based restricted stock units subject to vesting and forfeiture restrictions. /s/ Carrie Etherton, Attorney-in-Fact 2025-12-11