COLOMBO RUSSELL A

PrivateCIK: 1403064

Location

NOVATO, CA

COLOMBO RUSSELL A

Filed: 5/6/2026ACC: 0001403064-26-000004

InsiderCOLOMBO RUSSELL ACIK 1403064

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IssuerBANK OF MARIN BANCORPCIK 1403475

DirectorOfficer· President and CEO

Since Dec 2017

-37.56K

Net shares

Net seller

$0.00

Total acquired

0

Open market trades

0B · 0S

3

Total transactions

37.56K disposed

Non-Derivative Transactions0

No non-derivative transactions reported

Derivative Transactions3

Stock Options (Right to Buy)

Direct

H · H

Converts to

Common Stock

8.40K shares

Shares

−8.40K

Strike price

22.94

Held after

0.00

Exercisable

—

4/1/2024

Stock Options (Right to Buy)

Direct

H · H

Converts to

Common Stock

14.34K shares

Shares

−14.34K

Strike price

25.38

Held after

0.00

Exercisable

—

3/2/2025

Stock Options (Right to Buy)

Direct

H · H

Converts to

Common Stock

14.82K shares

Shares

−14.82K

Strike price

24.83

Held after

0.00

Exercisable

—

3/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Options (Right to Buy) Direct	Common Stock8.40K shares	4/1/2024	H · H	−8.40K	22.94	—	0.00
Stock Options (Right to Buy) Direct	Common Stock14.34K shares	3/2/2025	H · H	−14.34K	25.38	—	0.00
Stock Options (Right to Buy) Direct	Common Stock14.82K shares	3/1/2026	H · H	−14.82K	24.83	—	0.00

Non-Derivative Holdings (Post-Transaction)3

Common Stock

Direct

Shares owned2.55K

Common Stock

Indirect

Shares owned43.56K

Common Stock

Indirect

Shares owned13.69K

Total

2.55K direct·57.25K indirect59.80K

Security Title	Shares Owned	Ownership Type
Common Stock	2.55K	Direct
Common Stock	43.56K	Indirect
Common Stock	13.69K	Indirect
Total	59.80K	2.55K direct·57.25K indirect

Derivative Holdings (Post-Transaction)6

Stock Options (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

4.72K

Shares owned

4.72K

Exercise price

38.25

Expiration

—

Exercise window

—

Stock Options (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

11.54K

Shares owned

11.54K

Exercise price

33.58

Expiration

—

Exercise window

—

Stock Options (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

7.43K

Shares owned

7.43K

Exercise price

40.10

Expiration

—

Exercise window

—

Stock Options (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

5.42K

Shares owned

5.42K

Exercise price

33.58

Expiration

—

Exercise window

—

Stock Options (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

10.36K

Shares owned

10.36K

Exercise price

34.80

Expiration

—

Exercise window

—

Stock Options (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

10.03K

Shares owned

10.03K

Exercise price

44.45

Expiration

—

Exercise window

—

Total

Underlying

49.50K

Owned

49.50K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Options (Right to Buy) Direct	Common Stock	38.25	—	—	4.72K	4.72K
Stock Options (Right to Buy) Direct	Common Stock	33.58	—	—	11.54K	11.54K
Stock Options (Right to Buy) Direct	Common Stock	40.10	—	—	7.43K	7.43K
Stock Options (Right to Buy) Direct	Common Stock	33.58	—	—	5.42K	5.42K
Stock Options (Right to Buy) Direct	Common Stock	34.80	—	—	10.36K	10.36K
Stock Options (Right to Buy) Direct	Common Stock	44.45	—	—	10.03K	10.03K
Total					49.50K	49.50K

COLOMBO RUSSELL A — Insider Transaction (Form 4) Filed May 6, 2026 | Finecho