X0306 4 2021-09-29 0 0001041803 PRICESMART INC PSMT 0001235789 NAYLON WILLIAM J 9740 SCRANTON RD. SAN DIEGO CA 92121 0 1 0 0 EVP & Chief Operating Officer Common Stock, $0.0001 par value per share 2021-09-29 4 A 0 5240 0.00 A 35531 D Common Stock, $0.0001 par value per share 2021-10-14 4 A 0 4870 0.00 A 40401 D Award of restricted stock, subject to vesting. 1,746 of the shares vest August 29, 2022, 1,747 of the shares vest August 29, 2023 and 1,747 shares vest August 29, 2024, subject to continued service or acceleration of vesting as provided in award agreement. Represents performance stock units as to which target and over-achievement performance criteria were determined to have been met on October 14, 2021. The PSUs remain subject to time-based vesting. 1,776 shares vest on October 26, 2021, 666 shares vest on October 26, 2022 and 2,428 shares vest on October 26, 2023, subject to continued service or acceleration of vesting as provided in award agreement. /s/ Francisco Velasco as Attorney-in-Fact 2021-10-18