X0508 4 2025-05-21 false 0001795815 California BanCorp \ CA BCAL 0001979150 Martin Ricardo C/O CALIFORNIA BANCORP 355 S. GRAND AVE STE 1200 LOS ANGELES CA 90071 true false false false false Common Stock 2025-05-21 4 A false 3729.00 0.00 A 23976.00 D Common Stock 4568.00 I By IRA Represents restricted stock units ("RSUs") issued to the Reporting Person as consideration for service on the Issuer's Board of Directors. Shares will be issued in full upon vesting, which is scheduled to occur on May 21, 2026. Includes 7,466 shares owned by Ricardo and Audrey Martin. Manisha Merchant, by POA for Ricardo Martin 2025-05-23