SEC Form 4 · accession 0001267342-26-000003
COLUMBIA BANKING SYSTEM, INC. · COLB
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Steven R Gardner
Director
Period of report
Sep 4, 2026
Accepted (ET)
Sep 8, 2026 · 5:24 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000887343
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Sep 4, 2026 | A | 2,577 | $0.00 | A | 2,577 | D | |
| Common Stock | holding | — | — | — | 570,370 | I | by family trust |
Table II — derivative securities
No Table II lines on this filing.