X0306 4 2021-03-05 0 0001195734 POTBELLY CORP PBPB 0001789923 Douglas Jeffrey 111 N. CANAL SUITE 850 CHICAGO IL 60606 0 1 0 0 SVP, Chief Information Officer Common Stock 2021-03-05 4 M 0 11878 A 139538 D Common Stock 2021-03-09 4 S 0 4180 5.60 D 135358 D Performance Stock Units 2021-03-05 4 M 0 11878 D 2025-05-15 Common Stock 11878 11877 D On March 5, 2021, 11,878 of the Reporting Person's performance stock units vested. Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock upon the Issuer's common stock achieving a specified market price. Represents shares automatically sold pursuant to an irrevocable sell to cover election to satisfy withholding obligations in connection with the vesting of 11,878 of the Reporting Person's performance stock units. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transaction ranged from $5.60 to $5.65 per share. /s/ Jeffrey Douglas 2021-03-09