Columbia Banking System, Inc. (COLB)
Columbia Banking System, Inc. (COLB) Insider Trading
Directors, officers and holders of more than 10% of COLB report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 274 transactions on file: 1 with code P, 11 with code S and 38 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 29, 2026 | GARDNER STEVEN R | Director | S Sale | 5,012 | $31.23 | $156,500 |
| Oct 29, 2026 | GARDNER STEVEN R | Director | S Sale | 322 | $31.24 | $10,059 |
| Oct 29, 2026 | GARDNER STEVEN R | Director | S Sale | 484 | $31.21 | $15,108 |
| Oct 29, 2026 | GARDNER STEVEN R | Director | S Sale | 2,151 | $31.23 | $67,186 |
| Oct 29, 2026 | GARDNER STEVEN R | Director | S Sale | 200 | $31.23 | $6,246 |
| Oct 29, 2026 | GARDNER STEVEN R | Director | S Sale | 2,253 | $31.25 | $70,395 |
| Oct 29, 2026 | GARDNER STEVEN R | Director | S Sale | 100 | $31.22 | $3,122 |
| Sep 14, 2026 | MACHUCA LUIS | Director | A Award | 594 | $30.48 | $18,105 |
| Sep 4, 2026 | GARDNER STEVEN R | Director | A Award | 2,577 | Not measured | Not measured |
| Sep 2, 2026 | LAGOMARSINO SIMONE | Director | A Award | 2,670 | Not measured | Not measured |
| Aug 14, 2026 | Giem Judi | EVP CHRO | M Exercise | 2,393 | $32.69 | $78,227 |
| Aug 14, 2026 | Giem Judi | EVP CHRO | M Exercise | 2,393 | Not measured | Not measured |
| Aug 14, 2026 | Giem Judi | EVP CHRO | F Tax Payment | 643 | $32.69 | $21,020 |
| Jun 30, 2026 | Deer Aaron James | EVP Chief Strategy/Innov Offcr | P Purchase | 886 | $25.37 | $22,478 |
| Jun 15, 2026 | MACHUCA LUIS | Director | A Award | 563 | $31.78 | $17,892 |
| Jun 8, 2026 | Moore Devine David | EVP Chief Marketing Officer | S Sale | 60 | $29.77 | $1,786 |
| Jun 8, 2026 | Moore Devine David | EVP Chief Marketing Officer | S Sale | 3,812 | $29.77 | $113,502 |
| May 14, 2026 | Finkelstein Mark A | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | MACHUCA LUIS | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | Varnado Anddria | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | SCHULTZ JOHN F | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | SEATON ELIZABETH WHITEHEAD | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | STUDENMUND JAYNIE M | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | MITCHELL M CHRISTIAN | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | Terry Hilliard C. III | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | Forrest Eric | Director | A Award | 3,949 | Not measured | Not measured |
| May 14, 2026 | Lund Randal Lee | Director | A Award | 3,949 | Not measured | Not measured |
| Apr 15, 2026 | Lakely Brock | EVP, Chief Accounting Officer | F Tax Payment | 396 | $29.10 | $11,524 |
| Mar 16, 2026 | MACHUCA LUIS | Director | A Award | 659 | $26.83 | $17,681 |
| Mar 13, 2026 | Deer Aaron James | EVP Chief Strategy/Innov Offcr | F Tax Payment | 617 | $26.23 | $16,184 |
| Mar 13, 2026 | BARUFFI KUMI YAMAMOTO | EVP General Counsel, Corp Sec | M Exercise | 2,381 | $26.23 | $62,454 |
| Mar 13, 2026 | BARUFFI KUMI YAMAMOTO | EVP General Counsel, Corp Sec | S Sale | 937 | $26.23 | $24,578 |
| Mar 13, 2026 | Deer Aaron James | EVP Chief Strategy/Innov Offcr | M Exercise | 1,567 | $26.23 | $41,102 |
| Mar 13, 2026 | Merrywell Christopher | Senior Executive VP | F Tax Payment | 1,973 | $26.23 | $51,752 |
| Mar 13, 2026 | Lakely Brock | EVP, Chief Accounting Officer | M Exercise | 846 | $26.23 | $22,191 |
| Mar 13, 2026 | Anderson Drew K | EVP Chief Admin Officer | M Exercise | 2,506 | $26.23 | $65,732 |
| Mar 13, 2026 | Lakely Brock | EVP, Chief Accounting Officer | S Sale | 211 | $26.23 | $5,535 |
| Mar 13, 2026 | OGNALL ANDREW H | EVP Chief Risk Officer | M Exercise | 2,381 | Not measured | Not measured |
| Mar 13, 2026 | Lakely Brock | EVP, Chief Accounting Officer | F Tax Payment | 211 | $26.23 | $5,535 |
| Mar 13, 2026 | Moore Devine David | EVP Chief Marketing Officer | M Exercise | 940 | $26.23 | $24,656 |
| Mar 13, 2026 | Anderson Drew K | EVP Chief Admin Officer | F Tax Payment | 1,215 | $26.23 | $31,869 |
| Mar 13, 2026 | Nixon Torran B | Senior Executive VP | F Tax Payment | 2,002 | $26.23 | $52,512 |
| Mar 13, 2026 | Namdar Frank | EVP Chief Credit Officer | M Exercise | 2,820 | $26.23 | $73,969 |
| Mar 13, 2026 | Namdar Frank | EVP Chief Credit Officer | F Tax Payment | 1,367 | $26.23 | $35,856 |
| Mar 13, 2026 | Moore Devine David | EVP Chief Marketing Officer | F Tax Payment | 376 | $26.23 | $9,862 |
| Mar 13, 2026 | BARUFFI KUMI YAMAMOTO | EVP General Counsel, Corp Sec | F Tax Payment | 937 | $26.23 | $24,578 |
| Mar 13, 2026 | OGNALL ANDREW H | EVP Chief Risk Officer | F Tax Payment | 951 | $26.23 | $24,945 |
| Mar 13, 2026 | Stein Clint | Chair, President, CEO | M Exercise | 18,171 | $26.23 | $476,625 |
| Mar 13, 2026 | OGNALL ANDREW H | EVP Chief Risk Officer | M Exercise | 2,381 | $26.23 | $62,454 |
| Mar 13, 2026 | Stein Clint | Chair, President, CEO | F Tax Payment | 7,151 | $26.23 | $187,571 |
The full Form 4 history is on the COLB company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.