Columbia Banking System (COLB) — insider trading
Financials · NASDAQ
Columbia Banking System (COLB) has 18 reported SEC Form 4 insider transactions in our data, including 1 open-market purchase and 2 open-market sales among the most recent 18 (latest 2026-08-14).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-14 | Giem Judi | Officer (EVP CHRO) | Option exercise / conversion (derivative) | 2,393 | — | — | Form 4 |
| 2026-08-14 | Giem Judi | Officer (EVP CHRO) | Shares withheld for taxes / exercise cost | 643 | $32.69 | $21.0K | Form 4 |
| 2026-08-14 | Giem Judi | Officer (EVP CHRO) | Option exercise / conversion | 2,393 | $32.69 | $78.2K | Form 4 |
| 2026-06-30 | Deer Aaron James | Officer (EVP Chief Strategy/Innov Offcr) | Open-market purchase | 886 | $25.37 | $22.5K | Form 4 |
| 2026-06-15 | MACHUCA LUIS | Director | Grant / award / vesting (derivative) | 563 | $31.78 | $17.9K | Form 4 |
| 2026-06-08 | Moore Devine David | Officer (EVP Chief Marketing Officer) | Open-market sale | 3,812 | $29.78 | $113.5K | Form 4 |
| 2026-06-08 | Moore Devine David | Officer (EVP Chief Marketing Officer) | Open-market sale | 60 | $29.77 | $1.8K | Form 4 |
| 2026-05-14 | Finkelstein Mark A | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | Forrest Eric | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | Lund Randal Lee | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | MACHUCA LUIS | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | MITCHELL M CHRISTIAN | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | SCHULTZ JOHN F | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | SEATON ELIZABETH WHITEHEAD | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | STUDENMUND JAYNIE M | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | Terry Hilliard C. III | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-05-14 | Varnado Anddria | Director | Grant / award / vesting | 3,949 | — | $0 | Form 4 |
| 2026-04-15 | Lakely Brock | Officer (EVP, Chief Accounting Officer) | Shares withheld for taxes / exercise cost | 396 | $29.10 | $11.5K | Form 4 |
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Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: Columbia Banking System (COLB).
Last updated 2026-08-14 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.