Amendment to Statement of Changes in Beneficial Ownership (Form 4/A)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Volk David J. 2. Issuer Name and Ticker or Trading Symbol California BanCorp \ CA [BCAL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O CALIFORNIA BANCORP, 355 S. GRAND AVE STE 1200 3. Date of Earliest Transaction (Month/Day/Year) 02/03/2026 (Street) LOS ANGELES, CA 90071 4. If Amendment, Date Original Filed (Month/Day/Year) 02/05/2026 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 01/28/2026 J 2,346,104(1) D $ 0 0 (1) I By Castle Creek Advisors IV LLC and Castle Creek Capital Partners VI LP

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Volk David J. C/O CALIFORNIA BANCORP 355 S. GRAND AVE STE 1200 LOS ANGELES, CA 90071	X

Signatures

Manisha Merchant, by POA for David Volk		02/10/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The reporting person is a managing principal of Castle Creek Capital VI LLC, the sole general partner of Castle Creek Capital Partners VI, LP ("Fund VI"). As of January 28, 2026, Fund VI no longer owns any shares of the Issuer's common stock (the "Fund VI Shares"), although Fund VI's prior ownership of 2,346,104 Fund VI Shares was reported in the Form 4 filed for the reporting person on February 5, 2026 (the "February 5 Form 4"). However, during the period that Fund VI owned such Fund VI Shares, the reporting person was not the beneficial owner of the Fund VI Shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose and expressly disclaims such beneficial ownership. This amendment is therefore being filed to remove the 2,346,104 Fund VI Shares and to remove the 3,725 shares that belong to Castle Creek Advisor IV LLC that were previously reported in Table I in the February 5 Form 4.

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