Stocks · Financials · State Commercial Banks

COLUMBIA BANKING SYSTEM, INC.

COLB Clue Score53
United States Fiscal year ends December CIK 0000887343 Results filed 22 Oct 2026

What the insiders did Net buying

Insider
Date
Role
Action
Shares
Price
Amount
Kumi Yamamoto Baruffi
13 Mar 2026
EVP General Counsel, Corp Sec
Sold after exercise
937
$26.23
$24.58K
Brock Lakely
13 Mar 2026
EVP, Chief Accounting Officer
Sold after exercise
211
$26.23
$5.53K

What was left out

Form 4 filings counted 660
Amendments (4/A) skipped 23
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 3
Sales straight out of an exercise 2
Sales at will 31
Transactions with no price 0
Shares from compensation/vesting 2,551,938
Sales filed before the plan box existed 21
History held since 12 Dec 2006