Russell A. Colombo - 02 Jan 2026 Form 4 Insider Report for Bank of Marin Bancorp (BMRC)

Role: Director
Signature: /s/ Krissy Meyer, Attorney-in-Fact
Issuer symbol: BMRC
Transactions as of: 02 Jan 2026
Net transactions value: +$23,856
Form type: 4
Filing time: 05 Jan 2026, 13:08:34 UTC
Previous filing: 02 Jul 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Colombo Russell A	Director	504 REDWOOD BLVD., SUITE 100, NOVATO	/s/ Krissy Meyer, Attorney-in-Fact	05 Jan 2026	0001403064

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BMRC	Common Stock	Other	$23,856	+925	+2.2%	$25.79	43,560	02 Jan 2026	As Trustee of Colombo Family Trust	F1
holding	BMRC	Common Stock						13,692	02 Jan 2026	By IRA

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	BMRC	Stock Options (Right to Buy)						14,820	02 Jan 2026	Common Stock	14,820	$24.83	Direct	F2
holding	BMRC	Stock Options (Right to Buy)						10,360	02 Jan 2026	Common Stock	10,360	$34.80	Direct	F2
holding	BMRC	Stock Options (Right to Buy)						5,420	02 Jan 2026	Common Stock	5,420	$33.58	Direct	F3
holding	BMRC	Stock Options (Right to Buy)						11,540	02 Jan 2026	Common Stock	11,540	$33.58	Direct	F2
holding	BMRC	Stock Options (Right to Buy)						10,030	02 Jan 2026	Common Stock	10,030	$44.45	Direct	F2
holding	BMRC	Stock Options (Right to Buy)						7,430	02 Jan 2026	Common Stock	7,430	$40.10	Direct	F2
holding	BMRC	Stock Options (Right to Buy)						4,723	02 Jan 2026	Common Stock	4,723	$38.25	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares received in payment of Director fee
F2	Exercisable 33% per year beginning on first anniversary date of grant.
F3	Exercisable 33% immediately, then 33% per year on first anniversary date of grant.