X0407 4 2023-05-18 0 0001752036 California BanCorp CALB 0001807460 Cortese Stephen A. 1300 CLAY STREET, SUITE 500 OAKLAND CA 94612 1 0 0 0 0 Common Stock 2023-05-18 4 A 0 4680 0.00 A 274820 D Common Stock 35 I By daughter Annual grant of restricted stock units. Vests in full on May 16, 2024, subject to the reporting person's continuous service. The reporting person disclaims beneficial ownership of the shares held by his daughter, and this report should not be deemed an admission that the reporting person is the beneficial owner of his daughter's shares for purposes of Section 16 or for any other purpose. /s/ Stephen A Cortese, by Debra Bradford, attorney-in-fact 2023-05-22