COLB (Columbia Banking Systems Inc)
Insider Trading Activity
Every open-market purchase and sale reported by COLB officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-15 | LUIS MACHUCA | Director | A | — | — |
| 2026-09-08 | STEVEN R GARDNER | Director | A | — | — |
| 2026-09-04 | SIMONE LAGOMARSINO | Director | A | — | — |
| 2026-08-18 | Judi Giem | EVP CHRO | MIXED | — | — |
| 2026-07-02 | Aaron James Deer | EVP Chief Strategy/Innov Offcr | Buy | — | — |
| 2026-06-16 | LUIS MACHUCA | Director | A | — | — |
| 2026-06-10 | Devine David Moore | EVP Chief Marketing Officer | Sell | — | — |
| 2026-05-18 | Mark A Finkelstein | Director | A | — | — |
| 2026-05-18 | Eric Forrest | Director | A | — | — |
| 2026-05-18 | Randal Lee Lund | Director | A | — | — |
| 2026-05-18 | LUIS MACHUCA | Director | A | — | — |
| 2026-05-18 | M CHRISTIAN MITCHELL | Director | A | — | — |
| 2026-05-18 | JOHN F SCHULTZ | Director | A | — | — |
| 2026-05-18 | Anddria Varnado | Director | A | — | — |
| 2026-05-18 | ELIZABETH WHITEHEAD SEATON | Director | A | — | — |
| 2026-05-18 | JAYNIE M STUDENMUND | Director | A | — | — |
| 2026-05-18 | Hilliard C. Terry III | Director | A | — | — |
| 2026-04-16 | Brock Lakely | EVP, Chief Accounting Officer | F | — | — |
| 2026-03-20 | KUMI YAMAMOTO BARUFFI | EVP General Counsel, Corp Sec | F | — | — |
| 2026-03-20 | Brock Lakely | EVP, Chief Accounting Officer | F | — | — |
| 2026-03-17 | Drew K Anderson | EVP Chief Admin Officer | MIXED | — | — |
| 2026-03-17 | KUMI YAMAMOTO BARUFFI | EVP General Counsel, Corp Sec | MIXED | — | — |
| 2026-03-17 | Aaron James Deer | EVP Chief Strategy/Innov Offcr | MIXED | — | — |
| 2026-03-17 | Brock Lakely | EVP, Chief Accounting Officer | MIXED | — | — |
| 2026-03-17 | Christopher Merrywell | Senior Executive VP | MIXED | — | — |
| 2026-03-17 | Devine David Moore | EVP Chief Marketing Officer | MIXED | — | — |
| 2026-03-17 | Frank Namdar | EVP Chief Credit Officer | MIXED | — | — |
| 2026-03-17 | Torran B Nixon | Senior Executive VP | MIXED | — | — |
| 2026-03-17 | ANDREW H OGNALL | EVP Chief Risk Officer | MIXED | — | — |
| 2026-03-17 | Clint Stein | Chair, CEO, President | MIXED | — | — |
| 2026-03-17 | LUIS MACHUCA | Director | A | — | — |
| 2026-03-05 | Torran B Nixon | Senior Executive VP | Sell | — | — |
| 2026-03-02 | Drew K Anderson | EVP Chief Admin Officer | F | — | — |
| 2026-03-02 | KUMI YAMAMOTO BARUFFI | EVP General Counsel, Corp Sec | F | — | — |
| 2026-03-02 | Aaron James Deer | EVP Chief Strategy/Innov Offcr | F | — | — |
| 2026-03-02 | Devine David Moore | EVP Chief Marketing Officer | F | — | — |
| 2026-03-02 | Brock Lakely | EVP, Chief Accounting Officer | F | — | — |
| 2026-03-02 | Christopher Merrywell | Senior Executive VP | F | — | — |
| 2026-03-02 | Frank Namdar | EVP Chief Credit Officer | F | — | — |
| 2026-03-02 | Torran B Nixon | Senior Executive VP | F | — | — |
| 2026-03-02 | ANDREW H OGNALL | EVP Chief Risk Officer | F | — | — |
| 2026-03-02 | Clint Stein | Chair, President, CEO | F | — | — |
| 2026-02-20 | Drew K Anderson | EVP Chief Admin Officer | A | — | — |
| 2026-02-20 | KUMI YAMAMOTO BARUFFI | EVP General Counsel, Corp Sec | A | — | — |
| 2026-02-20 | Aaron James Deer | EVP Chief Strategy/Innov Offcr | A | — | — |
| 2026-02-20 | Judi Giem | EVP CHRO | A | — | — |
| 2026-02-20 | Brock Lakely | EVP, Chief Accounting Officer | A | — | — |
| 2026-02-20 | Christopher Merrywell | Senior Executive VP | A | — | — |
| 2026-02-20 | Devine David Moore | EVP Chief Marketing Officer | A | — | — |
| 2026-02-20 | Frank Namdar | EVP Chief Credit Officer | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 572,947 | — |
| — | Executive Chairman | 390,824 | — |
| — | Chair, CEO, President | 158,735 | — |
| — | Chief Financial Officer | 142,268 | — |
| — | Senior Executive VP | 103,150 | — |
| — | Director | 80,071 | — |
| — | EVP Chief Risk Officer | 77,718 | — |
| — | Director | 75,422 | — |
| — | Director | 55,514 | — |
| — | EVP General Counsel, Corp Sec | 53,715 | — |
| — | Director | 50,384 | — |
| — | EVP Chief Credit Officer | 49,686 | — |
| — | Director | 47,569 | — |
| — | Senior Executive VP | 44,067 | — |
| — | Chief Human Resources Officer | 43,352 | — |
| — | EVP Chief Strategy/Innov Offcr | 42,761 | — |
| — | Director | 41,909 | — |
| — | Director | 37,113 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the COLB quote page; the site-wide leaderboard is on the insider transactions hub.