Drew K. Anderson

CIK: 0001955918

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 (6.3%)

Derivative conversions

Awards (A)6 (37.5%)

Compensation grants

Other (G, F, J, C, D, …)9 (56.3%)

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 (16 total)

COLB
COLUMBIA BANKING SYSTEM, INC.
Mar 13, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $26.23$32K
COLB
COLUMBIA BANKING SYSTEM, INC.
Mar 13, 2026
Exercise(M)
Direct
2.5K shares at avg. $26.23$66K
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
788 shares at avg. $31.49$25K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 2, 2026
Award(A)
Direct
3.1K shares at avg. $29.69$93K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 2, 2026
Tax Payment(F)
Direct
1.7K shares at avg. $29.69$51K
COLB
COLUMBIA BANKING SYSTEM, INC.
Jan 20, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $28.35$32K
COLB
COLUMBIA BANKING SYSTEM, INC.
Jan 20, 2026
Disposition(D)
Direct
390 shares-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 28, 2025
Tax Payment(F)
Direct
1.9K shares at avg. $26.73$52K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 28, 2025
Tax Payment(F)
Direct
1.1K shares at avg. $26.73$30K
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 25, 2025
Award(A)
Performance Restricted Stock Unit
Direct
3.8K shares at avg. $26.60-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 25, 2025
Award(A)
Performance Restricted Stock Unit
Direct
3.8K shares at avg. $26.60-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 25, 2025
Award(A)
Restricted Stock Unit
Direct
7.5K shares at avg. $26.60-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 25, 2025
Award(A)
Restricted Stock Unit
Direct
37.6K shares at avg. $26.60-
COLB
COLUMBIA BANKING SYSTEM, INC.
Feb 14, 2025
Tax Payment(F)
Direct
884 shares at avg. $27.41$24K

		Type	Shares	Price		Ownership
Mar 13, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,215	$26.23	$31,869	Direct
Mar 13, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Exercise(M)	2,506	$26.23	$65,732	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)	788	$31.49	$24,814	Direct
Feb 2, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A)	3,146	$29.69	$93,405	Direct
Feb 2, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,710	$29.69	$50,770	Direct
Jan 20, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,114	$28.35	$31,582	Direct
Jan 20, 2026	COLB COLUMBIA BANKING SYSTEM, INC.	Disposition(D)	390	-	$0	Direct
Feb 28, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,944	$26.73	$51,963	Direct
Feb 28, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	1,127	$26.73	$30,125	Direct
Feb 25, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A) Performance Restricted Stock Unit	3,759	$26.60	-	Direct
Feb 25, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A) Performance Restricted Stock Unit	3,759	$26.60	-	Direct
Feb 25, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A) Restricted Stock Unit	7,518	$26.60	-	Direct
Feb 25, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Award(A) Restricted Stock Unit	37,593	$26.60	-	Direct
Feb 14, 2025	COLB COLUMBIA BANKING SYSTEM, INC.	Tax Payment(F)	884	$27.41	$24,230	Direct

1-16 of 16 transactions

About Anderson Drew K

Anderson Drew K (SEC CIK 0001955918) files insider reports with the SEC as EVP Chief Admin Officer of COLUMBIA BANKING SYSTEM, INC. (COLB).

Signal8 holds 9 ownership filings by Anderson Drew K, all Form 4s, filed between Feb 18, 2025 and Mar 17, 2026. Those filings report 16 transactions, from Feb 14, 2025 to Mar 13, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Anderson Drew K's filings is in TACOMA, WA.

Recent filings by Anderson Drew K

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