SEC Form 4 research
| Issuer | COLUMBIA BANKING SYSTEM, INC. |
|---|---|
| Tickers | COLB |
| Reporting owners | 59 |
| Officers and directors | 22 |
| Last public filing | 2026-10-30 |
| Available | Trade date | Reporting owners | Code | Shares | Price | Reported value |
|---|---|---|---|---|---|---|
| 2026-10-30 | 2026-10-29 | GARDNER STEVEN R | S | 2,253 | $31.25 | Not reported |
| 2026-10-30 | 2026-10-29 | GARDNER STEVEN R | S | 322 | $31.24 | Not reported |
| 2026-10-30 | 2026-10-29 | GARDNER STEVEN R | S | 2,151 | $31.24 | Not reported |
| 2026-10-30 | 2026-10-29 | GARDNER STEVEN R | S | 200 | $31.23 | Not reported |
| 2026-10-30 | 2026-10-29 | GARDNER STEVEN R | S | 5,012 | $31.23 | Not reported |
| 2026-10-30 | 2026-10-29 | GARDNER STEVEN R | S | 100 | $31.22 | Not reported |
| 2026-10-30 | 2026-10-29 | GARDNER STEVEN R | S | 484 | $31.22 | Not reported |
| 2026-09-15 | 2026-09-14 | MACHUCA LUIS | A | 594 | $30.48 | Not reported |
| 2026-09-08 | 2026-09-04 | GARDNER STEVEN R | A | 2,577 | $0 | Not reported |
| 2026-09-04 | 2026-09-02 | LAGOMARSINO SIMONE | A | 2,670 | $0 | Not reported |
Public filing evidence only. NexusTrade's simulated follower strategies are hypothetical, modeled results — not live trading returns and not investment advice.