[Form 4] California BanCorp \ CA Insider Trading Activity

Rhea-AI Filing Summary

California BanCorp (BCAL) Form 4 shows an insider transaction by Michele Wirfel, EVP and Chief Operating Officer. On 09/21/2025 Ms. Wirfel disposed of 93 shares of California BanCorp common stock at a reported price of $17.43 per share. The filing explains the shares were sold to satisfy the reporting person’s tax liability upon vesting of a previously granted award. After the reported disposition, the insider beneficially owned 76,785 shares. The form was signed by a power of attorney on behalf of the reporting person on 09/22/2025.

Positive

• Continued significant ownership: Reporting person retains 76,785 shares after the disposition, showing ongoing alignment with shareholders.
• Clear explanation provided: Filing explicitly states shares were disposed to satisfy tax liability upon vesting, a routine corporate action.

Negative

• Insider sale reported: Disposition of 93 shares at $17.43 per share, which is an actual reduction in insider holdings.

Insights

Corporate Governance Expert

TL;DR: Routine tax-related disposition of vested award; retains meaningful share ownership.

The reported transaction is a customary disposal to cover tax withholding tied to equity award vesting, as explicitly stated in the filing. The executed sale of 93 shares at $17.43 per share is small relative to the remaining beneficial holding of 76,785 shares, indicating continued alignment with shareholders. No indication of an open trading plan or other coordinated group activity appears in the submitted Form 4.

Securities Analyst

TL;DR: Non-material sale for tax obligations; transaction unlikely to change valuation views.

The transaction code and explanatory note confirm the sale was to satisfy tax obligations from vesting rather than a discretionary liquidation. The size—93 shares—represents a de minimis reduction in reported beneficial ownership, so this filing alone provides no new evidence of a change in insider sentiment about the company’s prospects.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Wirfel Michelle

(Last) (First) (Middle)

C/O CALIFORNIA BANCORP

355 S. GRAND AVE STE 1200

(Street)

LOS ANGELES CA 90071

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
California BanCorp \ CA [ BCAL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Operating Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/21/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	09/21/2025		F(1)		93	D	$17.43	76,785	D

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Shares disposed to satisfy the Reporting Person's tax liability by the vesting of a previously granted award.

Remarks:

	Manisha Merchant, by POA for Michele Wirfel	09/22/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Michele Wirfel report on the Form 4 for BCAL?

She reported disposing of 93 shares of California BanCorp common stock at $17.43 per share to satisfy taxes from a vested award.

When was the transaction and when was the Form 4 signed?

Transaction date: 09/21/2025. Form signed by POA: 09/22/2025.

How many shares does the reporting person own after the transaction?

76,785 shares beneficially owned following the reported disposition.

Was the sale part of a trading plan or other arrangement?

The filing does not indicate a Rule 10b5-1 trading plan; it states the disposal was to satisfy a tax liability upon vesting.

Does this Form 4 disclose any derivative transactions?

No. The filing reports only a non-derivative common stock disposition; Table II (derivatives) is empty.