Frank Namdar

CIK: 0001759802

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)1 (6.7%)

Derivative conversions

Awards (A)5 (33.3%)

Compensation grants

Other (G, F, J, C, D, …)9 (60.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

COLB

COLUMBIA BANKING SYSTEM, INC.

Officer

Discretionary Trading P&L

Holdings

Transaction History (15 total)

COLB
COLUMBIA BANKING SYSTEM, INC.
Mar 13, 2026
Tax Payment(F)
Direct
1.4K shares at avg. $26.23$36K
COLB
COLUMBIA BANKING SYSTEM, INC.
Mar 13, 2026
Exercise(M)
Direct
2.8K shares at avg. $26.23$74K
COLB
COLUMBIA BANKING SYSTEM, INC.
Mar 1, 2026
Tax Payment(F)
Direct
1.8K shares at avg. $28.45$51K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 18, 2026
Award(A)
Restricted Stock Unit
Direct
8K shares at avg. $31.24-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 15, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $31.49$37K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 2, 2026
Award(A)
Direct
4.7K shares at avg. $29.69$139K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 2, 2026
Tax Payment(F)
Direct
2.4K shares at avg. $29.69$71K
COLB
COLUMBIA BANKING SYSTEM, INC.
Jan 20, 2026
Disposition(D)
Direct
579 shares-
COLB
COLUMBIA BANKING SYSTEM, INC.
Jan 20, 2026
Tax Payment(F)
Direct
1.7K shares at avg. $28.35$47K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 28, 2025
Tax Payment(F)
Direct
902 shares at avg. $26.73$24K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 28, 2025
Tax Payment(F)
Direct
1.9K shares at avg. $26.73$50K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 25, 2025
Award(A)
Restricted Stock Unit
Direct
8.5K shares at avg. $26.60-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 25, 2025
Award(A)
Performance Restricted Stock Unit
Direct
4.2K shares at avg. $26.60-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 25, 2025
Award(A)
Performance Restricted Stock Unit
Direct
4.2K shares at avg. $26.60-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 14, 2025
Tax Payment(F)
Direct
1.3K shares at avg. $27.41$36K

		Type	Shares	Price		Ownership
Mar 13, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,367	$26.23	$35,856	Direct
Mar 13, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Exercise(M)	2,820	$26.23	$73,969	Direct
Mar 1, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,808	$28.45	$51,438	Direct
Feb 18, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A) Restricted Stock Unit	8,002	$31.24	-	Direct
Feb 15, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,169	$31.49	$36,812	Direct
Feb 2, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A)	4,667	$29.69	$138,563	Direct
Feb 2, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	2,383	$29.69	$70,751	Direct
Jan 20, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Disposition(D)	579	-	$0	Direct
Jan 20, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,652	$28.35	$46,834	Direct
Feb 28, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	902	$26.73	$24,110	Direct
Feb 28, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,873	$26.73	$50,065	Direct
Feb 25, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A) Restricted Stock Unit	8,458	$26.60	-	Direct
Feb 25, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A) Performance Restricted Stock Unit	4,229	$26.60	-	Direct
Feb 25, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A) Performance Restricted Stock Unit	4,229	$26.60	-	Direct
Feb 14, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,311	$27.41	$35,935	Direct

1-15 of 15 transactions

About Namdar Frank

Namdar Frank (SEC CIK 0001759802) files insider reports with the SEC as EVP Chief Credit Officer of COLUMBIA BANKING SYSTEM, INC. (COLB).

Signal8 holds 9 ownership filings by Namdar Frank, all Form 4s, filed between Feb 18, 2025 and Mar 17, 2026. Those filings report 15 transactions, from Feb 14, 2025 to Mar 13, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Namdar Frank's filings is in TACOMA, WA.

Recent filings by Namdar Frank

Mar 13, 2026: Tax withholding of COLB shares (Form 4, code F).
Mar 13, 2026: Option exercise of COLB shares (Form 4, code M).
Mar 1, 2026: Tax withholding of COLB shares (Form 4, code F).
Feb 18, 2026: Grant or award of COLB derivative securities (Form 4, code A).
Feb 15, 2026: Tax withholding of COLB shares (Form 4, code F).

Other insiders filing for COLUMBIA BANKING SYSTEM, INC. (COLB)

GARDNER STEVEN R, Director
MACHUCA LUIS, Director
LAGOMARSINO SIMONE, Director
Giem Judi, EVP CHRO
Deer Aaron James, EVP Chief Strategy/Innov Offcr
Moore Devine David, EVP Chief Marketing Officer

How to read Form 4 transaction codes