SEC CIK 887343

COLUMBIA BANKING SYSTEM, INC.

Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.

Current Positions

CompanyShares OwnedAs Of
COLBview stock →10,8602025-11-20

Position History — COLB

Reported shares owned immediately after each Form 4 transaction, over time.

Not enough filing history yet to chart a trend for COLB.

Recent Filings — COLB

DateActivitySharesPriceOwned After
2025-11-20———10,860

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.