M Christian Mitchell Columbia Banking System, Inc. (COLB) insider trading activity

M Christian Mitchell is Director of COLUMBIA BANKING SYSTEM, INC.. Currently has a direct ownership of 37,960 shares of COLB, which is worth approximately $980,127. The most recent transaction as insider was on Sep 02, 2025, when has been sold 2,205 shares (Common Stock) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 38K

n/a 3M change

n/a 12M change

Total Value Held $980,127

M CHRISTIAN MITCHELL Transaction History

Date	Transaction	Value	Shares Traded	Shares Held	Form
Sep 02 2025	BUY Grant, award, or other acquisition	-	2,205 Added 5.49%	37,960 Common Stock
Aug 31 2025	BUY Grant, award, or other acquisition	-	35,755 Added 50.0%	35,755 Common Stock

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