FORM 5
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
[ ] Form 3 Holdings Reported
[X] Form 4 Transactions Reported
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

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

1. Name and Address of Reporting Person *

Colombo Russell A
2. Issuer Name and Ticker or Trading Symbol

Bank of Marin Bancorp [BMRC]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    _____ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle)

504 REDWOOD BOULEVARD, SUITE 100
3. Statement for Issuer's Fiscal Year Ended (MM/DD/YYYY)
12/31/2022 
(Street)

NOVATO, CA 94947
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed(MM/DD/YYYY)
 
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. Trans. Date2A. Deemed Execution Date, if any3. Trans. 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)
Amount(A) or (D)Price
Common Stock 12/23/2022  J4 (1)1357 D$0.00 10296 D  
Common Stock 12/23/2022  J4 (1)1357 A$0.00 30132 I As Trustee of Colombo Family Trust 
Common Stock 12/28/2022  G4 1900 D$0.00 28232 I As Trustee of Colombo Family Trust 
Common Stock 3/9/2022  J4 (2)13692 A$0.00 13692 I By IRA 
Common Stock    (2)   0 I By ESOP 

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. 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
(MM/DD/YYYY)
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 at End of Issuer's Fiscal Year
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options (Right to buy) $19.675          (3)4/1/2023 Common Stock 8200  8200 D  
Stock Options (Right to Buy) $22.94          (3)4/1/2024 Common Stock 8400  8400 D  
Stock Options (Right to buy) $25.375          (4)3/2/2025 Common Stock 14340  14340 D  
Stock Options (Right to buy) $24.825          (4)3/1/2026 Common Stock 14820  14820 D  
Stock Options (Right to buy) $34.80          (4)3/1/2027 Common Stock 10360  10360 D  
Stock Options (Right to buy) $33.575          (5)3/1/2028 Common Stock 5420  5420 D  
Stock Options (Right to buy) $33.575          (4)3/1/2028 Common Stock 11540  11540 D  
Stock Options (Right to Buy) $44.45          (4)3/1/2029 Common Stock 10030  10030 D  
Stock Options (Right to buy) $40.10          (4)3/2/2030 Common Stock 7430  7430 D  
Stock Options (Right to Buy) $38.25          (4)3/1/2031 Common Stock 4723  4723 D  

Explanation of Responses:
(1) Shares transferred from Direct ownership to Indirect ownership.
(2) Since the date of the reporting person's last ownership report, the reporting person transferred his ESOP holdings to an IRA.
(3) Exercisable 20% per year beginning on first anniversary date of grant
(4) Exercisable 33% per year beginning on first anniversary date of grant
(5) Exercisable 33% immediately, then 33% per year on first anniversary date of grant.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Colombo Russell A
504 REDWOOD BOULEVARD, SUITE 100
NOVATO, CA 94947
X



Signatures
Nancy Rinaldi Boatright, Attorney-in-Fact1/24/2023
**Signature of Reporting PersonDate


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 control number.
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