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 | — | |
| Aug 14, 2026 FMForm 4 → | Aug 18, 4:50 pm EDT | Judi GiemEVP CHRO | 3,036 | $32.69 | $99,247 | 1,750 | — | |
| Jun 30, 2026 PForm 4 → | Jul 2, 5:17 pm EDT | Aaron James DeerEVP Chief Strategy/Innov Offcr | 886 | $25.37 | $22,478 | 42,761 | +2.12% | |
| Jun 8, 2026 SForm 4 → | Jun 10, 4:52 pm EDT | Devine David MooreEVP Chief Marketing Officer | 3,872 | $29.77 | $115,288 | 18,636 | −17.2% |
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 | — | |
| Aug 14, 2026 MForm 4 → | Aug 18, 4:50 pm EDT | Judi GiemEVP CHRO | 2,393 | — | — | 13,108 | — | |
| Jun 15, 2026 AForm 4 → | Jun 16, 4:46 pm EDT | Luis MachucaDirector | 563 | $31.78 | $17,892 | 48,966 | — |