Columbia Banking System Inc
NASDAQ: COLB · FINANCIAL SERVICES · BANKS - REGIONAL
Updated 2026-06-05
Columbia Banking System Inc (COLB) Insider transactions
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-14 | VARNADO, ANDDRIA | Director | Buy | 3,949 | — | — |
| 2026-05-14 | TERRY, HILLIARD C. III | Director | Buy | 3,949 | — | — |
| 2026-05-14 | STUDENMUND, JAYNIE M | Director | Buy | 3,949 | — | — |
| 2026-05-14 | SEATON, ELIZABETH WHITEHEAD | Director | Buy | 3,949 | — | — |
| 2026-05-14 | SCHULTZ, JOHN F | Director | Buy | 3,949 | — | — |
| 2026-05-14 | MITCHELL, M CHRISTIAN | Director | Buy | 3,949 | — | — |
| 2026-05-14 | MACHUCA, LUIS | Director | Buy | 3,949 | — | — |
| 2026-05-14 | LUND, RANDAL LEE | Director | Buy | 3,949 | — | — |
| 2026-05-14 | FORREST, ERIC | Director | Buy | 3,949 | — | — |
| 2026-05-14 | FINKELSTEIN, MARK A | Director | Buy | 3,949 | — | — |
| 2026-04-15 | LAKELY, BROCK | EVP, Chief Accounting Officer | Sale | 396 | $29.10 | $11523.60 |
| 2026-03-16 | MACHUCA, LUIS | Director | Buy | 659 | $26.83 | $17680.97 |
| 2026-03-13 | STEIN, CLINT | Director, Chair, CEO, President | Sale | 18,171 | — | — |
| 2026-03-13 | STEIN, CLINT | Director, Chair, CEO, President | Buy | 18,171 | $26.23 | $476625.33 |
| 2026-03-13 | STEIN, CLINT | Director, Chair, CEO, President | Sale | 7,151 | $26.23 | $187570.73 |
| 2026-03-13 | OGNALL, ANDREW H | EVP Chief Risk Officer | Sale | 2,381 | — | — |
| 2026-03-13 | OGNALL, ANDREW H | EVP Chief Risk Officer | Buy | 2,381 | $26.23 | $62453.63 |
| 2026-03-13 | OGNALL, ANDREW H | EVP Chief Risk Officer | Sale | 951 | $26.23 | $24944.73 |
| 2026-03-13 | NIXON, TORRAN B | Senior Executive VP | Sale | 5,013 | — | — |
| 2026-03-13 | NIXON, TORRAN B | Senior Executive VP | Buy | 5,013 | $26.23 | $131490.99 |
| 2026-03-13 | NIXON, TORRAN B | Senior Executive VP | Sale | 2,002 | $26.23 | $52512.46 |
| 2026-03-13 | NAMDAR, FRANK | EVP Chief Credit Officer | Sale | 2,820 | — | — |
| 2026-03-13 | NAMDAR, FRANK | EVP Chief Credit Officer | Buy | 2,820 | $26.23 | $73968.60 |
| 2026-03-13 | NAMDAR, FRANK | EVP Chief Credit Officer | Sale | 1,367 | $26.23 | $35856.41 |
| 2026-03-13 | MOORE, DEVINE DAVID | EVP Chief Marketing Officer | Sale | 940 | — | — |
| 2026-03-13 | MOORE, DEVINE DAVID | EVP Chief Marketing Officer | Buy | 940 | $26.23 | $24656.20 |
| 2026-03-13 | MOORE, DEVINE DAVID | EVP Chief Marketing Officer | Sale | 376 | $26.23 | $9862.48 |
| 2026-03-13 | MERRYWELL, CHRISTOPHER | Senior Executive VP | Sale | 5,013 | — | — |
| 2026-03-13 | MERRYWELL, CHRISTOPHER | Senior Executive VP | Buy | 5,013 | $26.23 | $131490.99 |
| 2026-03-13 | MERRYWELL, CHRISTOPHER | Senior Executive VP | Sale | 1,973 | $26.23 | $51751.79 |
| 2026-03-13 | LAKELY, BROCK | EVP, Chief Accounting Officer | Sale | 846 | — | — |
| 2026-03-13 | LAKELY, BROCK | EVP, Chief Accounting Officer | Buy | 846 | $26.23 | $22190.58 |
| 2026-03-13 | LAKELY, BROCK | EVP, Chief Accounting Officer | Sale | 211 | $26.23 | $5534.53 |
| 2026-03-13 | DEER, AARON JAMES | EVP Chief Strategy/Innov Offcr | Sale | 1,567 | — | — |
| 2026-03-13 | DEER, AARON JAMES | EVP Chief Strategy/Innov Offcr | Buy | 1,567 | $26.23 | $41102.41 |
| 2026-03-13 | DEER, AARON JAMES | EVP Chief Strategy/Innov Offcr | Sale | 617 | $26.23 | $16183.91 |
| 2026-03-13 | BARUFFI, KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Sale | 2,381 | — | — |
| 2026-03-13 | BARUFFI, KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Buy | 2,381 | $26.23 | $62453.63 |
| 2026-03-13 | BARUFFI, KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Sale | 937 | $26.23 | $24577.51 |
| 2026-03-13 | ANDERSON, DREW K | EVP Chief Admin Officer | Sale | 2,506 | — | — |
| 2026-03-13 | ANDERSON, DREW K | EVP Chief Admin Officer | Buy | 2,506 | $26.23 | $65732.38 |
| 2026-03-13 | ANDERSON, DREW K | EVP Chief Admin Officer | Sale | 1,215 | $26.23 | $31869.45 |
| 2026-03-04 | NIXON, TORRAN B | Senior Executive VP | Sale | 2,240 | $28.85 | $64624.00 |
| 2026-03-03 | NIXON, TORRAN B | Senior Executive VP | Sale | 2,241 | $28.25 | $63308.25 |
| 2026-03-01 | STEIN, CLINT | Director, Chair, President, CEO | Sale | 9,789 | $28.45 | $278497.05 |
| 2026-03-01 | OGNALL, ANDREW H | EVP Chief Risk Officer | Sale | 1,304 | $28.45 | $37098.80 |
| 2026-03-01 | NIXON, TORRAN B | Senior Executive VP | Sale | 2,980 | $28.45 | $84781.00 |
| 2026-03-01 | NAMDAR, FRANK | EVP Chief Credit Officer | Sale | 1,808 | $28.45 | $51437.60 |
| 2026-03-01 | MOORE, DEVINE DAVID | EVP Chief Marketing Officer | Sale | 838 | $28.45 | $23841.10 |
| 2026-03-01 | MERRYWELL, CHRISTOPHER | Senior Executive VP | Sale | 3,230 | $28.45 | $91893.50 |
| 2026-03-01 | LAKELY, BROCK | EVP, Chief Accounting Officer | Sale | 391 | $28.45 | $11123.95 |
| 2026-03-01 | DEER, AARON JAMES | EVP Chief Strategy/Innov Offcr | Sale | 918 | $28.45 | $26117.10 |
| 2026-03-01 | BARUFFI, KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Sale | 1,799 | $28.45 | $51181.55 |
| 2026-03-01 | ANDERSON, DREW K | EVP Chief Admin Officer | Sale | 1,808 | $28.45 | $51437.60 |
| 2026-02-18 | STEIN, CLINT | Director, Chair, President, CEO | Buy | 56,017 | $31.24 | $1.75M |
| 2026-02-18 | SEDA, IVAN A | EVP, Chief Financial Officer | Buy | 12,804 | $31.24 | $399996.96 |
| 2026-02-18 | OGNALL, ANDREW H | EVP Chief Risk Officer | Buy | 8,002 | $31.24 | $249982.48 |
| 2026-02-18 | NIXON, TORRAN B | Senior Executive VP | Buy | 16,645 | $31.24 | $519989.80 |
| 2026-02-18 | NAMDAR, FRANK | EVP Chief Credit Officer | Buy | 8,002 | $31.24 | $249982.48 |
| 2026-02-18 | MOORE, DEVINE DAVID | EVP Chief Marketing Officer | Buy | 2,800 | $31.24 | $87472.00 |
| 2026-02-18 | MERRYWELL, CHRISTOPHER | Senior Executive VP | Buy | 16,645 | $31.24 | $519989.80 |
| 2026-02-18 | LAKELY, BROCK | EVP, Chief Accounting Officer | Buy | 5,601 | $31.24 | $174975.24 |
| 2026-02-18 | GIEM, JUDI | EVP CHRO | Buy | 8,322 | $31.24 | $259979.28 |
| 2026-02-18 | DEER, AARON JAMES | EVP Chief Strategy/Innov Offcr | Buy | 4,001 | $31.24 | $124991.24 |
| 2026-02-18 | BARUFFI, KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Buy | 8,322 | $31.24 | $259979.28 |
| 2026-02-18 | ANDERSON, DREW K | EVP Chief Admin Officer | Buy | 8,002 | $31.24 | $249982.48 |
| 2026-02-15 | STEIN, CLINT | Director, Chair, President, CEO | Sale | 3,922 | $31.49 | $123503.78 |
| 2026-02-15 | OGNALL, ANDREW H | EVP Chief Risk Officer | Sale | 931 | $31.49 | $29317.19 |
| 2026-02-15 | NIXON, TORRAN B | Senior Executive VP | Sale | 1,905 | $31.49 | $59988.45 |
| 2026-02-15 | NAMDAR, FRANK | EVP Chief Credit Officer | Sale | 1,169 | $31.49 | $36811.81 |
| 2026-02-15 | MOORE, DEVINE DAVID | EVP Chief Marketing Officer | Sale | 485 | $31.49 | $15272.65 |
| 2026-02-15 | MERRYWELL, CHRISTOPHER | Senior Executive VP | Sale | 1,706 | $31.49 | $53721.94 |
| 2026-02-15 | DEER, AARON JAMES | EVP Chief Strategy/Innov Offcr | Sale | 531 | $31.49 | $16721.19 |
| 2026-02-15 | BARUFFI, KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Sale | 1,036 | $31.49 | $32623.64 |
| 2026-02-15 | ANDERSON, DREW K | EVP Chief Admin Officer | Sale | 788 | $31.49 | $24814.12 |
| 2026-02-04 | MACHUCA, LUIS | Director | Buy | 562 | $31.12 | $17489.44 |
| 2026-02-02 | STEIN, CLINT | Director, Chair, President, CEO | Buy | 28,927 | $29.69 | $858842.63 |
| 2026-02-02 | STEIN, CLINT | Director, Chair, President, CEO | Buy | 21,988 | $29.69 | $652823.72 |
| 2026-02-02 | STEIN, CLINT | Director, Chair, President, CEO | Sale | 11,383 | $29.69 | $337961.27 |
| 2026-02-02 | STEIN, CLINT | Director, Chair, President, CEO | Sale | 8,653 | $29.69 | $256907.57 |
| 2026-02-02 | OGNALL, ANDREW H | EVP Chief Risk Officer | Buy | 4,510 | $29.69 | $133901.90 |
| 2026-02-02 | OGNALL, ANDREW H | EVP Chief Risk Officer | Sale | 1,929 | $29.69 | $57272.01 |
| 2026-02-02 | NIXON, TORRAN B | Senior Executive VP | Buy | 13,844 | $29.69 | $411028.36 |
| 2026-02-02 | NIXON, TORRAN B | Senior Executive VP | Sale | 5,528 | $29.69 | $164126.32 |
| 2026-02-02 | NAMDAR, FRANK | EVP Chief Credit Officer | Buy | 4,667 | $29.69 | $138563.23 |
| 2026-02-02 | NAMDAR, FRANK | EVP Chief Credit Officer | Sale | 2,383 | $29.69 | $70751.27 |
| 2026-02-02 | MOORE, DEVINE DAVID | EVP Chief Marketing Officer | Buy | 2,095 | $29.69 | $62200.55 |
| 2026-02-02 | MOORE, DEVINE DAVID | EVP Chief Marketing Officer | Sale | 965 | $29.69 | $28650.85 |
| 2026-02-02 | MERRYWELL, CHRISTOPHER | Senior Executive VP | Buy | 12,576 | $29.69 | $373381.44 |
| 2026-02-02 | MERRYWELL, CHRISTOPHER | Senior Executive VP | Sale | 4,949 | $29.69 | $146935.81 |
| 2026-02-02 | DEER, AARON JAMES | EVP Chief Strategy/Innov Offcr | Buy | 2,620 | $29.69 | $77787.80 |
| 2026-02-02 | DEER, AARON JAMES | EVP Chief Strategy/Innov Offcr | Sale | 1,191 | $29.69 | $35360.79 |
| 2026-02-02 | BARUFFI, KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Buy | 5,093 | $29.69 | $151211.17 |
| 2026-02-02 | BARUFFI, KUMI YAMAMOTO | EVP General Counsel, Corp Sec | Sale | 2,110 | $29.69 | $62645.90 |
| 2026-02-02 | ANDERSON, DREW K | EVP Chief Admin Officer | Buy | 3,146 | $29.69 | $93404.74 |
| 2026-02-02 | ANDERSON, DREW K | EVP Chief Admin Officer | Sale | 1,710 | $29.69 | $50769.90 |
| 2026-01-30 | GARDNER, STEVEN R | Director | Sale | 13,725 | $29.43 | $403926.75 |
| 2026-01-20 | STEIN, CLINT | Director, Chair, President, CEO | Sale | 7,615 | $28.35 | $215885.25 |
| 2026-01-20 | STEIN, CLINT | Director, Chair, President, CEO | Sale | 5,635 | $28.35 | $159752.25 |
| 2026-01-20 | STEIN, CLINT | Director, Chair, President, CEO | Sale | 3,588 | — | — |
Frequently asked questions
Are COLB insiders buying or selling?
Over the transactions on record, COLB insiders have been net sellers, with about $3.67M in stock sold across 56 sales, against 34 open-market purchases.
Does insider selling at COLB mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which COLB insiders are selling the most?
Recent selling is concentrated in a few names. STEIN, CLINT accounts for the largest share on record, with about $1.56M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.