DEER AARON JAMES

PrivateCIK: 1810107
Location

TACOMA, WA

DEER AARON JAMES (EVP Chief Financial Officer) exercised options at COLUMBIA BANKING SYSTEM, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderDEER AARON JAMESCIK 1810107
Officer· EVP Chief Financial Officer
Since Apr 2020
-617.00
Net shares
Net seller
$16.2K
Total sold
0
Open market trades
0B · 0S
3
Total transactions
1.57K acquired · 2.18K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+1.57K

Price / share

$26.23

Trade value

$41.10K

% of position

3.8%
3/13/2026
40.92K42.49K

Common Stock

Direct
F · Tax Withholding

Shares

617.00

Price / share

$26.23

Trade value

$16.18K

% of position

1.5%
3/13/2026
42.49K41.88K
Total

Net shares

+950.00

Net value

$24.92K

Derivative Transactions1

Restricted Stock Unit

Direct
M · Option Exercise
Converts to

Common Stock

1.57K shares

Shares

1.57K

Strike price

Held after

7.13K

Exercisable

3/13/2026
DEER AARON JAMES — Insider Transaction (Form 4) Filed Mar 17, 2026 | Finecho