X0508 4 2026-03-13 0 0001871509 Portillo's Inc. PTLO 0001305052 Hart Gerard Johan C/O PORTILLO'S INC. 2001 SPRING ROAD, SUITE 400 OAK BROOK IL 60523 1 0 0 0 0 Class A common stock 2026-03-13 4 M 0 50070 5.33 A 107965 D Class A common stock 50072 I By Trust Stock Option (right to buy) 3.85 2026-03-13 4 M 0 50070 0 D 2026-08-08 Class A common stock 50070 0 D Represents the exercise of options previously granted on 8/8/2016 pursuant to the Issuer's 2014 Equity Incentive Plan, which were substituted for options to purchase shares of Class A common stock under the Issuer's 2021 Equity Incentive Plan in connection with the Issuer's initial public offering. The options vested in equal annual installments on each of the first five anniversaries of the grant date, and are fully vested. By: /s/ Kelly M. Kaiser, as attorney-in-fact for Gerard Johan Hart 2026-03-16