COLUMBIA BANKING SYSTEM, INC.

SEC insider activity covers quarterly filings through June 30, 2026. Later filings are not included. Reported roles do not establish current employment or current holdings. SEC filing documents, sections and filing-text search cover filings dated January 1, 2000 onward. Earlier filings are deferred until after launch.

COLB

organization

SIC: 6022

Also known as: Columbia Banking System, Inc.

SEC Insider

$81.3M

1,507 transactions

Summary

COLUMBIA BANKING SYSTEM, INC. (COLB) is an organization.

Recent Insider Transactions

As filed, including amendments; not net cash flow or current holdings. Joint reports count once. Totals cover known values only.

Buys: $5.0MSales: $5.2M57 insiders

Date	Insider	Type	Value
2026-03-13	Stein Clint(Chair, CEO, President)	M	$477K
2026-03-13	Stein Clint(Chair, CEO, President)	F	$188K
2026-06-08	Moore Devine David(EVP Chief Marketing Officer)	Sell	$114K
2026-03-13	BARUFFI KUMI YAMAMOTO(EVP General Counsel, Corp Sec)	F	$25K
2026-06-15	MACHUCA LUIS	A	$18K
2026-03-16	MACHUCA LUIS	A	$18K
2026-04-15	Lakely Brock(EVP, Chief Accounting Officer)	F	$12K
2026-03-13	Lakely Brock(EVP, Chief Accounting Officer)	F	$6K
2026-06-08	Moore Devine David(EVP Chief Marketing Officer)	Sell	$2K
2026-05-14	SCHULTZ JOHN F	A	$0
2026-05-14	Varnado Anddria	A	$0
2026-05-14	MACHUCA LUIS	A	$0
2026-05-14	STUDENMUND JAYNIE M	A	$0
2026-05-14	MITCHELL M CHRISTIAN	A	$0
2026-05-14	Terry Hilliard C. III	A	$0
2026-05-14	Finkelstein Mark A	A	$0
2026-05-14	SEATON ELIZABETH WHITEHEAD	A	$0
2026-05-14	Forrest Eric	A	$0
2026-05-14	Lund Randal Lee	A	$0
2026-03-13	Stein Clint(Chair, CEO, President)	M	$0

SEC filings: SEC EDGAR

Activity data: SEC EDGAR

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