Company · CIK 0000887343 · SIC 6022 — State Commercial Banks · Nasdaq
COLUMBIA BANKING SYSTEM, INC. · COLB
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 4, 2026 AForm 4 → | Sep 8, 5:24 pm EDT | Steven R GardnerDirector | 2,577 | — | — | 2,577 | — | |
| Sep 2, 2026 AForm 4 → | Sep 4, 4:41 pm EDT | Simone LagomarsinoDirector | 2,670 | — | — | 2,670 | — |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 14, 2026 AForm 4 → | Sep 15, 4:55 pm EDT | Luis MachucaDirector | 594 | $30.48 | $18,105 | 49,560 | — |