X0306 4 2020-02-24 0 0001171759 RED ROBIN GOURMET BURGERS INC RRGB 0001660449 MUHTAR JONATHAN A. 6312 S. FIDDLER'S GREEN CIRCLE SUITE 200N GREENWOOD VILLAGE CO 80111 0 1 0 0 Chief Concept Officer Common Stock 2020-02-24 4 F 0 191 35.18 D 15278 D In connection with the vesting of 558 time-based restricted stock units which were granted on February 24, 2017 under the issuer's Second Amended and Restated 2007 Performance Incentive Plan, the reporting person sold 191 of such shares to the issuer to satisfy tax withholding obligations. The sale was approved by the issuer's Compensation Committee in accordance with Rule 16b-3(d)(1) of the Exchange Act (the "Act"), and as such, the sale is exempt from Section 16(b) of the Act pursuant to Rule 16b-3(e) promulgated thereunder. Includes 8,692 restricted stock units subject to vesting and forfeiture restrictions. /s/ Michael L. Kaplan, Attorney-in-Fact 2020-02-25