Aaron James Deer

EVP Chief Strategy/Innov Offcr · 1 filing · Latest: Mar 13, 2026

COLUMBIA BANKING SYSTEM, INC.

Ticker	Owner	Relationship	Date	Transaction	Cost	#Shares	Value ($)	#Shares Total	SEC Form 4
COLB	Aaron James Deer	EVP Chief Strategy/Innov Offcr	Mar 13, 2026	Tax Withholding	$26.23	617	$16.2K	41,875	Mar 17 8:27 PM
COLB	Aaron James Deer	EVP Chief Strategy/Innov Offcr	Mar 13, 2026	Option Exercise	$26.23	1,567	$41.1K	42,492	Mar 17 8:27 PM