X0306 4 2021-12-13 0 0000717954 UNIFIRST CORP UNF 0001724534 Croatti Matthew C/O UNIFIRST CORP 68 JONSPIN ROAD WILMINGTON MA 01887 0 0 1 0 Common Stock 2021-12-13 4 M 0 250 104.67 A 2066 D Common Stock 2021-12-13 4 D 0 165 204.00 D 1901 D Common Stock 2021-12-13 4 S 0 85 202.37 D 1816 D Stock Appreciation Right 104.67 2021-12-13 4 M 0 250 0.00 D 2020-10-26 2025-10-26 Common Stock ($0.10 par value) 250 750 D Represents shares sold pursuant to a Rule 10b5-1 sales plan. Consists of 493 restricted stock units that vest 100% on October 22, 2023, 388 restricted stock units that vest 60% on October 29, 2022, an additional 20% vested on October 29, 2023 and the remaining 20% on October 29, 2024, and 468 restricted stock units that vest 60% on October 26, 2023, an additional 20% on October 26, 2024 and the remaining 20% on October 26, 2025 and 467 restricted stock units that vest in five equal annual installments on October 31, 2022, October 31, 2023, October 31, 2024, October 31, 2025 and October 31, 2026. /s/ Steven S. Sintros, Attorney-in-Fact 2021-12-14