X0306 4 2022-10-19 0 0001041803 PRICESMART INC PSMT 0001748565 Bianchi Ana Luisa 9740 SCRANTON RD. SAN DIEGO CA 92121 0 1 0 0 EVP-Chief Merch. Officer Common Stock, $0.0001 par value per share 2022-10-19 4 A 0 1613 0.00 A 22517 D Common Stock, $0.0001 par value per share 2022-10-26 4 F 0 247 63.06 D 22270 D Represents performance stock units as to which target and over-achievement performance criteria were determined to have been met on October 19, 2022. The PSUs remain subject to time-based vesting. 539 shares vest on October 26, 2022, 537 shares vest on October 26, 2023 and 537 shares vest on October 26, 2024, subject to continued service or acceleration of vesting as provided in award agreement. Not applicable. Represents the withholding of stock to satisfy the reporting person's tax withholding obligation upon the vesting of performance stock units. /s/ Francisco Velasco as Attorney-in-fact 2022-10-28