27 insiders reported 162 Form 4 transactions for COLUMBIA BANKING SYSTEM, INC. (COLB) over the past 18 months (most recent 2026-07-02). Recent activity: Deer Aaron James (EVP Chief Strategy/Innov Offcr) Buy 886 shares, Moore Devine David (EVP Chief Marketing Officer) Sell 60 shares, Moore Devine David (EVP Chief Marketing Officer) Sell 3,812 shares, Varnado Anddria (Director) Buy 3,949 shares, STUDENMUND JAYNIE M (Director) Buy 3,949 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | Deer Aaron James | EVP Chief Strategy/Innov Offcr | Buy | 886 | $22,478 |
| 2026-06-10 | Moore Devine David | EVP Chief Marketing Officer | Sell | 60 | $1,786 |
| 2026-06-10 | Moore Devine David | EVP Chief Marketing Officer | Sell | 3,812 | $113,502 |
| 2026-05-18 | Varnado Anddria | Director | Buy | 3,949 | $0 |
| 2026-05-18 | STUDENMUND JAYNIE M | Director | Buy | 3,949 | $0 |
| 2026-05-18 | MITCHELL M CHRISTIAN | Director | Buy | 3,949 | $0 |
| 2026-05-18 | Terry Hilliard C. III | Director | Buy | 3,949 | $0 |
| 2026-05-18 | Finkelstein Mark A | Director | Buy | 3,949 | $0 |
| 2026-05-18 | SCHULTZ JOHN F | Director | Buy | 3,949 | $0 |
| 2026-05-18 | SEATON ELIZABETH WHITEHEAD | Director | Buy | 3,949 | $0 |
| 2026-05-18 | MACHUCA LUIS | Director | Buy | 3,949 | $0 |
| 2026-05-18 | Lund Randal Lee | Director | Buy | 3,949 | $0 |
| 2026-05-18 | Forrest Eric | Director | Buy | 3,949 | $0 |
| 2026-04-16 | Lakely Brock | EVP, Chief Accounting Officer | Sell | 396 | $11,524 |
| 2026-03-20 | BARUFFI KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Sell | 937 | $24,578 |
| 2026-03-20 | Lakely Brock | EVP, Chief Accounting Officer | Sell | 211 | $5,535 |
| 2026-03-17 | Moore Devine David | EVP Chief Marketing Officer | Buy | 940 | $24,656 |
| 2026-03-17 | Moore Devine David | EVP Chief Marketing Officer | Sell | 376 | $9,862 |
| 2026-03-17 | Namdar Frank | EVP Chief Credit Officer | Buy | 2,820 | $73,969 |
| 2026-03-17 | Namdar Frank | EVP Chief Credit Officer | Sell | 1,367 | $35,856 |
| 2026-03-17 | Lakely Brock | EVP, Chief Accounting Officer | Buy | 846 | $22,191 |
| 2026-03-17 | Lakely Brock | EVP, Chief Accounting Officer | Sell | 211 | $5,535 |
| 2026-03-17 | OGNALL ANDREW H | EVP Chief Risk Officer | Buy | 2,381 | $62,454 |
| 2026-03-17 | OGNALL ANDREW H | EVP Chief Risk Officer | Sell | 951 | $24,945 |
| 2026-03-17 | Anderson Drew K | EVP Chief Admin Officer | Buy | 2,506 | $65,732 |
Source: SEC Form 4 filings · as of 2026-07-02