Director-linked PTMR Capital trims Avidbank (AVBH) stake with 19,318-share sale

Rhea-AI Filing Summary

Avidbank Holdings, Inc. director Mike Rosinus reported an indirect open-market sale related to 19,318 shares of Common Stock at $28.28 per share. The shares are held by PTMR Capital Partners LP, over which he has sole voting and dispositive power. Following the sale, indirect holdings reported were 64,915 shares, and a separate line reflects 16,680 shares held directly.

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

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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^*

ROSINUS MIKE

(Last) (First) (Middle)

1732 N 1ST STREET

6TH FLOOR

(Street)

SAN JOSE CA 95112

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

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	03/10/2026		S		19,318	D	$28.28	64,915	I	See Footnote 1(1)
Common Stock								16,680	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. 1. Such shares are held directly by PTMR Capital Partners LP ("PTMR Capital"), of which the general partners are PTMR GP, LLC ("PTMR GP") and TRF Partners LLC ("TRF"). Reporting Person is the sole member of each of PTMR GP and TRF, and has sole voting and dispositive power over shares held by PTMR Capital. Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest, if any, therein.

Remarks:

	/s/Shawn Zeagler, Attorney-in-fact for Michael F. Rosinus	03/16/2026
	** 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.

FAQ

What insider transaction did Avidbank Holdings (AVBH) disclose on this Form 4?

Avidbank Holdings disclosed an indirect open-market sale tied to 19,318 shares of Common Stock at $28.28 per share. The transaction was reported by director Mike Rosinus and involved shares held through PTMR Capital Partners LP.

Who executed the Avidbank (AVBH) share sale associated with director Mike Rosinus?

The sold shares are held by PTMR Capital Partners LP, whose general partners are PTMR GP, LLC and TRF Partners LLC. Mike Rosinus is sole member of both entities and has sole voting and dispositive power over PTMR Capital’s Avidbank shares.

How many Avidbank (AVBH) shares were sold and at what price?

The filing reports an indirect open-market sale of 19,318 shares of Avidbank Common Stock at $28.28 per share. This transaction is categorized as a sale in the open market or a private transaction under the Form 4 coding.

What are Mike Rosinus’s reported Avidbank (AVBH) holdings after the transaction?

After the reported sale, the Form 4 shows 64,915 Avidbank shares held indirectly and a separate line of 16,680 shares held directly. These figures reflect positions following the transaction date disclosed in the filing.

Does the Avidbank (AVBH) Form 4 include a beneficial ownership disclaimer?

Yes. The footnote states that Mike Rosinus disclaims beneficial ownership of Avidbank shares held by PTMR Capital Partners LP, except to the extent of his pecuniary interest, if any, even though he has sole voting and dispositive power over those shares.

Is the Avidbank (AVBH) insider sale on this Form 4 a derivative exercise?

No. The reported transaction involves Common Stock classified as a non-derivative open-market sale. The derivative section is empty, indicating no option or other derivative exercises were reported in this particular Form 4 filing.