Avidbank director granted 1,500 restricted shares

POLSTER BRYAN C. reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

POLSTER BRYAN C. reported acquisition or exercise transactions in this Form 4 filing.

Avidbank Holdings, Inc. director Bryan C. Polster reported a compensation-related stock grant. He received 1,500 shares of restricted common stock on May 19, 2026 at $0.00 per share under the company’s 2022 Equity Incentive Plan, subject to a one-year vesting schedule.

Following this award, he directly holds 64,964 shares of common stock. In addition, indirect holdings reported include 190,644 shares held by the Polster/Yamamoto Living Trust dated February 8, 2021 and 1,300 shares held by his spouse. The filing reflects an equity grant rather than an open-market purchase or sale.

Insider Trade Summary

Grant/Award: 1,500 shares

Grant/Award 3 txns

Insider POLSTER BRYAN C.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,500	$0.00	$0.00
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 64,964 shares (Direct); Common Stock — 1,300 shares (Indirect, By spouse.); Common Stock — 190,644 shares (Indirect, By Polster/Yamamoto Living Trust dtd 2/8/2021.)

Footnotes (2)

1. F1. Restricted stock granted pursuant to the issuer's 2022 Equity Incentive Plan, as amended, subject to a one year annual vesting schedule
2. F2. N/A

Key Figures

Restricted stock grant: 1,500 shares Grant price: $0.00 per share Direct holdings after grant: 64,964 shares +2 more

5 metrics

Restricted stock grant 1,500 shares Common Stock grant on May 19, 2026 under 2022 Equity Incentive Plan

Grant price $0.00 per share Price for the 1,500-share restricted stock award

Direct holdings after grant 64,964 shares Common Stock directly held following the A-coded acquisition

Trust indirect holdings 190,644 shares Common Stock held by Polster/Yamamoto Living Trust dtd 2/8/2021

Spouse indirect holdings 1,300 shares Common Stock held indirectly by spouse

Key Terms

Restricted stock, 2022 Equity Incentive Plan, vesting schedule, indirect ownership

4 terms

Restricted stock financial

"Restricted stock granted pursuant to the issuer's 2022 Equity Incentive Plan"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

2022 Equity Incentive Plan financial

"granted pursuant to the issuer's 2022 Equity Incentive Plan, as amended"

vesting schedule financial

"subject to a one year annual vesting schedule"

A vesting schedule is a timeline that determines when someone gains full ownership of certain benefits, such as company stock or retirement contributions. Think of it like earning the right to own a gift gradually over time, rather than receiving it all at once. It matters to investors because it affects when they can fully access or sell these benefits, influencing their financial planning and decision-making.

indirect ownership financial

"direct_or_indirect":"I","nature_of_ownership":"By Polster/Yamamoto Living Trust"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did AVBH director Bryan C. Polster report?

Bryan C. Polster reported receiving 1,500 shares of restricted common stock as a grant. The shares were awarded at no cost under Avidbank Holdings’ 2022 Equity Incentive Plan and are subject to a one-year vesting schedule, making this a compensation-related equity award.

Was the AVBH Form 4 transaction an open-market buy or sell?

The Form 4 does not show any open-market buy or sell. It reports an acquisition coded “A,” representing a grant or award of 1,500 restricted shares at $0.00 per share under an equity incentive plan, rather than a discretionary market trade by the director.

How many AVBH shares does Bryan C. Polster hold directly after this filing?

After the reported grant, Bryan C. Polster directly holds 64,964 shares of Avidbank Holdings common stock. This direct position excludes additional indirect holdings reported through the Polster/Yamamoto Living Trust and shares held by his spouse, which are listed separately in the Form 4.

What indirect AVBH shareholdings related to Bryan C. Polster are disclosed?

The filing discloses 190,644 Avidbank Holdings shares held indirectly through the Polster/Yamamoto Living Trust dated February 8, 2021. It also reports 1,300 shares held indirectly by his spouse, providing a fuller picture of his associated ownership beyond directly held stock.

What are the vesting terms of the AVBH restricted stock grant reported?

The 1,500-share restricted stock grant is subject to a one-year annual vesting schedule. This means the shares become fully owned by Bryan C. Polster over that one-year period, in line with the terms of Avidbank Holdings’ 2022 Equity Incentive Plan, as amended.

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

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Accepted by SEC EDGAR 05/21/2026 - 02:04 PM Learn about SEC filing dates

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^*

POLSTER BRYAN C.

(Last) (First) (Middle)

1732 N 1ST STREET

6TH FLOOR

(Street)

SAN JOSE CALIFORNIA 95112

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Avidbank Holdings, Inc. [ AVBH ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock(1)	05/19/2026		A		1,500	A	$0(2)	64,964	D
Common Stock								1,300	I	By spouse.
Common Stock								190,644	I	By Polster/Yamamoto Living Trust dtd 2/8/2021.

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. Restricted stock granted pursuant to the issuer's 2022 Equity Incentive Plan, as amended, subject to a one year annual vesting schedule

2. N/A

Remarks:

	/s/Shawn Zeagler, Attorney-in-fact for Bryan C. Polster	05/21/2026
	** 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)