What price per share applied to the BCAL stock used for David Rainer's tax payment?

The shares used to satisfy David I. Rainer's tax liability were valued at $21.30 per share . This price was applied to the 3,518 California BanCorp (BCAL) common shares disposed of in connection with the vesting of a previously granted equity award on August 2, 2026.

California BanCorp (BCAL) CEO covers tax bill with shares

Q: How many BCAL shares were used to satisfy David Rainer's tax liability?

David I. Rainer used 3,518 California BanCorp (BCAL) common shares to satisfy his tax liability. According to the filing, these shares were associated with the vesting of a previously granted equity award and were valued at $21.30 per share on August 2, 2026.

Q: What position does David I. Rainer hold at California BanCorp (BCAL)?

David I. Rainer serves as Chairman and CEO of California BanCorp (BCAL) and is also a director. His Form 4 filing reflects both his executive role and the details of his direct and indirect ownership of BCAL common stock following the reported tax-related share disposition.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

California BanCorp (BCAL) Chairman and CEO David I. Rainer reported a tax-related share disposition. On August 2, 2026, 3,518 shares of common stock were used at $21.30 per share to satisfy tax liability from a vesting equity award, leaving 141,410 shares held directly and 356,347 shares held indirectly through a family trust.

Insider Trade Summary

Net Seller: 3,518 shares

Net Sell 2 txns

Insider Rainer David I

Role Chairman and CEO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock ^F1	3,518	$21.30	$75K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 141,410 shares (Direct); Common Stock — 356,347 shares (Indirect, DAVID AND ANNE RAINER TRUST U/A DTD 05/07/1997)

Footnotes (1)

F1. Shares disposed to satisfy the Reporting Person's tax liability by the vesting of a previously granted award.

Key Figures

Shares used for tax withholding: 3,518 shares Tax withholding price: $21.30 per share Direct holdings after transaction: 141,410 shares +1 more

4 metrics

Shares used for tax withholding 3,518 shares Common stock disposed on August 2, 2026 to satisfy tax liability from vesting award

Tax withholding price $21.30 per share Valuation of shares used to pay tax liability on August 2, 2026

Direct holdings after transaction 141,410 shares Common stock held directly by David I. Rainer after August 2, 2026

Indirect trust holdings 356,347 shares Common stock held indirectly via DAVID AND ANNE RAINER TRUST U/A DTD 05/07/1997

Key Terms

Payment of tax liability by delivering or withholding securities, DAVID AND ANNE RAINER TRUST U/A DTD 05/07/1997, exercisePriceOrTaxLiabilityShares

3 terms

Payment of tax liability by delivering or withholding securities financial

"Transaction coded F: Payment of tax liability by delivering or withholding securities"

DAVID AND ANNE RAINER TRUST U/A DTD 05/07/1997 financial

"Indirect ownership reported through DAVID AND ANNE RAINER TRUST U/A DTD 05/07/1997"

exercisePriceOrTaxLiabilityShares financial

"Summary field exercisePriceOrTaxLiabilityShares shows 3,518 shares related to tax liability"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/03/2026 - 08:14 PM Accepted by SEC EDGAR 08/03/2026 - 08:13 PM

FAQ

What insider transaction did California BanCorp (BCAL) report for David I. Rainer?

California BanCorp (BCAL) reported that David I. Rainer disposed of 3,518 common shares in a tax-related transaction. The shares were applied to his tax liability arising from the vesting of a previously granted equity award and were valued at $21.30 per share on August 2, 2026.

How many BCAL shares were used to satisfy David Rainer's tax liability?

David I. Rainer used 3,518 California BanCorp (BCAL) common shares to satisfy his tax liability. According to the filing, these shares were associated with the vesting of a previously granted equity award and were valued at $21.30 per share on August 2, 2026.

What is David Rainer's direct BCAL shareholding after the August 2, 2026 transaction?

After the August 2, 2026 tax-related disposition, David I. Rainer directly holds 141,410 shares of California BanCorp (BCAL) common stock. This figure reflects his direct ownership position following the use of 3,518 shares to cover tax obligations linked to a vesting equity award.

How many BCAL shares does David Rainer hold indirectly through a trust?

In addition to his direct holdings, David I. Rainer reports indirect ownership of 356,347 California BanCorp (BCAL) shares. These shares are held through the DAVID AND ANNE RAINER TRUST U/A DTD 05/07/1997, as disclosed in the indirect ownership section of the Form 4.

What position does David I. Rainer hold at California BanCorp (BCAL)?

David I. Rainer serves as Chairman and CEO of California BanCorp (BCAL) and is also a director. His Form 4 filing reflects both his executive role and the details of his direct and indirect ownership of BCAL common stock following the reported tax-related share disposition.

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
Estimated average burden
hours per response:			0.5

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^*

Rainer David I

(Last)

(First)

(Middle)

C/O CALIFORNIA BANCORP

355 S. GRAND AVE STE 1200

(Street)

LOS ANGELES

CALIFORNIA

90071

(City)

(State)

(Zip)

UNITED STATES

(Country)

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
X	Officer (give title below)	Other (specify below)
	Chairman and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/02/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/02/2026		F⁽¹⁾		3,518	D	$21.3	141,410	D
Common Stock								356,347	I	DAVID AND ANNE RAINER TRUST U/A DTD 05/07/1997

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 David Rainer	08/03/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR