| $705M | ||
| $677M | ||
| $350M | ||
| $213M | ||
| $93M | ||
| $77M |
Buys | $22,478 | 1 | 13 |
Sells | $1,005,876 | 7 | 87 |
| Deer Aaron James | EVP Chief Strategy/Innov Offcr | 1 | $22,478 | 0 | $0 | $22,478 |
| Lakely Brock | EVP, Chief Accounting Officer | 0 | $0 | 1 | $5,535 | $-5,535 |
| BARUFFI KUMI YAMAMOTO | EVP General Counsel, Corp Sec | 0 | $0 | 1 | $24,578 | $-24,578 |
| Moore Devine David | EVP Chief Marketing Officer | 0 | $0 | 1 | $115,289 | $-115,289 |
| Nixon Torran B | Senior Executive VP | 0 | $0 | 2 | $127,932 | $-127,932 |
| GARDNER STEVEN R | director | 0 | $0 | 2 | $732,543 | $-732,543 |
Columbia Banking System, Inc. operates as the bank holding company for Columbia Bank that provides banking, private banking, mortgage, and other financial services in the United States. The company offers deposit products, including business, non-interest-bearing checking, interest-bearing checking and savings, money market, insured cash sweep and other investment sweep solutions, and certificates of deposit. It also provides commercial lending products, such as commercial lines of credit and term loans, accounts receivable and inventory …
Over the last 12 months, insiders at Columbia Banking System, Inc. have bought $22,478 and sold $1.01M worth of Columbia Banking System, Inc. stock.
On average, over the past 5 years, insiders at Columbia Banking System, Inc. have bought $459,071 and sold $561,169 worth of stock each year.
Highest buying activity among insiders over the last 12 months: Deer Aaron James (EVP Chief Strategy/Innov Offcr) — $22,478.
The last purchase of 886 shares for transaction amount of $22,478 was made by Deer Aaron James (EVP Chief Strategy/Innov Offcr) on 2026‑06‑30.
| 2026-10-29 | Sale | GARDNER STEVEN R | director | 10,522 0.0037% | $31.23 | $328,617 | -0.55% | |
| 2026-06-30 | Deer Aaron James | EVP Chief Strategy/Innov Offcr | 886 0.0003% | $25.37 | $22,478 | -3.79% | ||
| 2026-06-08 | Sale | Moore Devine David | EVP Chief Marketing Officer | 3,872 0.0016% | $29.77 | $115,289 | +4.06% | |
| 2026-03-13 | Sale | BARUFFI KUMI YAMAMOTO | EVP General Counsel, Corp Sec | 937 0.0004% | $26.23 | $24,578 | +15.49% | |
| 2026-03-13 | Sale | Lakely Brock | EVP, Chief Accounting Officer | 211 <0.0001% | $26.23 | $5,535 | +15.49% | |
| 2026-03-04 | Sale | Nixon Torran B | Senior Executive VP | 2,240 0.0009% | $28.85 | $64,624 | +5.13% | |
| 2026-03-03 | Sale | Nixon Torran B | Senior Executive VP | 2,241 0.0009% | $28.25 | $63,308 | +4.79% | |
| 2026-01-30 | Sale | GARDNER STEVEN R | director | 13,725 0.0058% | $29.43 | $403,927 | +3.42% | |
| 2025-03-04 | Sale | Nixon Torran B | Senior Executive VP | 4,481 0.0022% | $25.99 | $116,461 | +4.14% | |
| 2024-02-06 | SEATON ELIZABETH WHITEHEAD | director | 2,685 0.0011% | $18.48 | $49,619 | +32.56% | ||
| 2024-02-01 | Deer Aaron James | Chief Strategy/Innovation Offc | 2,000 0.0009% | $19.32 | $38,648 | +27.06% | ||
| 2024-02-01 | Lund Randal Lee | director | 1,000 0.0004% | $19.29 | $19,288 | +27.06% | ||
| 2024-01-31 | Nixon Torran B | Senior Executive VP | 3,650 0.0017% | $20.49 | $74,802 | +21.65% | ||
| 2024-01-31 | MACHUCA LUIS | director | 4,889 0.0023% | $20.58 | $100,638 | +21.65% | ||
| 2024-01-30 | Stein Clint | President, CEO | 9,500 0.0045% | $20.96 | $199,112 | +15.52% | ||
| 2024-01-30 | Merrywell Christopher | Senior Executive VP | 5,000 0.0024% | $21.09 | $105,450 | +15.52% | ||
| 2024-01-30 | EERKES CRAIG D | director | 2,141 0.001% | $20.82 | $44,579 | +15.52% | ||
| 2024-01-30 | Numata S Mae Fujita | director | 2,400 0.0012% | $21.09 | $50,608 | +15.52% | ||
| 2024-01-30 | Finkelstein Mark A | director | 3,592 0.0017% | $20.87 | $74,965 | +15.52% | ||
| 2024-01-29 | FARNSWORTH RON L | Chief Financial Officer | 2,500 0.0012% | $20.71 | $51,775 | +16.69% |
| Nixon Torran B | Senior Executive VP | 98229 0.0339% | $3.03M | 1 | 3 | +21.65% |
| BARUFFI KUMI YAMAMOTO | EVP General Counsel, Corp Sec | 53715 0.0186% | $1.66M | 12 | 1 | <0.0001% |
| Deer Aaron James | EVP Chief Strategy/Innov Offcr | 42761 0.0148% | $1.32M | 8 | 0 | +1.08% |
| WEYERHAEUSER WILLIAM T | director | 223249 0.0771% | $6.88M | 2 | 0 | <0.0001% |
| Stein Clint | President, CEO | 165684 0.0572% | $5.11M | 8 | 3 | +0.88% |
| FARNSWORTH RON L | Chief Financial Officer | 160073 0.0553% | $4.94M | 1 | 0 | +16.69% |
| DRESSEL MELANIE J | President and CEO | 75057 0.0259% | $2.31M | 16 | 3 | +6.14% |
| HULBERT TOM | director | 69990 0.0242% | $2.16M | 4 | 2 | +22.05% |
| MACHUCA LUIS | director | 60835 0.021% | $1.88M | 1 | 0 | +21.65% |
| Merrywell Christopher | Senior Executive VP | 50727 0.0175% | $1.56M | 1 | 0 | +15.52% |
| WHITNEY EVANS Q | Executive Vice President | 50439 0.0174% | $1.56M | 3 | 2 | +5.62% |
| SCHULTZ JOHN F | director | 41870 0.0145% | $1.29M | 1 | 0 | +16.69% |
| McDonald Andy | EVP & CCO | 39813 0.0138% | $1.23M | 6 | 4 | <0.0001% |
| EERKES CRAIG D | director | 31163 0.0108% | $961,066.92 | 7 | 0 | +11.51% |
| SCHMINKEY GARY R | EVP and CFO | 30920 0.0107% | $953,572.80 | 2 | 3 | +2.15% |
| Numata S Mae Fujita | director | 28316 0.0098% | $873,265.44 | 2 | 0 | +21.68% |
| WILL JAMES M | director | 27137 0.0094% | $836,905.08 | 2 | 0 | <0.0001% |
| SEATON ELIZABETH WHITEHEAD | director | 25001 0.0086% | $771,030.84 | 1 | 0 | +32.56% |
| Forrest Eric | director | 24838 0.0086% | $766,003.92 | 1 | 0 | +16.69% |
| Finkelstein Mark A | director | 23908 0.0083% | $737,322.72 | 1 | 0 | +15.52% |
| Roberts Kent | Executive Vice President | 21875 0.0076% | $674,625.00 | 4 | 2 | <0.0001% |
| Lawson David C | EVP Chief H.R. Officer | 21212 0.0073% | $654,178.08 | 11 | 2 | <0.0001% |
| Lund Randal Lee | director | 17149 0.0059% | $528,875.16 | 1 | 0 | +27.06% |
| REGIS DANIEL C | director | 14500 0.005% | $447,180.00 | 2 | 0 | +22.79% |
| NELSON MARK W | Executive Vice President | 11012 0.0038% | $339,610.08 | 9 | 1 | +7.08% |
| FOLSOM JOHN | director | 10600 0.0037% | $326,904.00 | 4 | 0 | +35.07% |
| GOLDBERG FREDERICK M | director | 10844 0.0037% | $334,428.96 | 5 | 0 | +11.55% |
| RUSSELL HARALD R | Executive Vice President | 4808 0.0017% | $148,278.72 | 2 | 0 | +25.6% |
| Lantow Michelle | director | 3500 0.0012% | $107,940.00 | 1 | 0 | +27.83% |
| RODMAN DONALD | director | 1820 0.0006% | $56,128.80 | 4 | 0 | +2.77% |
$15,216,407 | 899 | 4.96% | $9.62B | |
$5,554,976 | 293 | 4.86% | $10.34B | |
$10,385,573 | 281 | 7.78% | $6.6B | |
$11,897,148 | 173 | 6.18% | $6.44B | |
$100,016,931 | 138 | 2.49% | $8.38B |
| Increased Positions | 243 | +43.55% | 35M | +12.07% |
| Decreased Positions | 237 | -42.47% | 33M | -11.52% |
| New Positions | 81 | New | 8M | New |
| Sold Out Positions | 53 | Sold Out | 10M | Sold Out |
| Total Postitions | 564 | +1.08% | 290M | +0.55% |
| Vanguard Group Inc | $841,511.00 | 9.98% | 29.85M | -1M | -3.65% | 2025-09-30 |
| Blackrock, Inc. | $759,294.00 | 9.01% | 26.93M | -5M | -15.41% | 2025-09-30 |
| T. Rowe Price Investment Management, Inc. | $489,969.00 | 5.81% | 17.38M | +1M | +8.09% | 2025-09-30 |
| Wellington Management Group Llp | $388,521.00 | 4.61% | 13.78M | +8M | +135.16% | 2025-09-30 |
| State Street Corp | $377,962.00 | 4.48% | 13.41M | -2M | -10.5% | 2025-09-30 |
| Dimensional Fund Advisors Lp | $369,750.00 | 4.39% | 13.12M | +138,065 | +1.06% | 2025-09-30 |
| Charles Schwab Investment Management Inc | $349,584.00 | 4.15% | 12.4M | +3M | +36.84% | 2025-09-30 |
| American Century Companies Inc | $282,356.00 | 3.35% | 10.02M | +432,927 | +4.52% | 2025-09-30 |
| Morgan Stanley | $235,170.00 | 2.79% | 8.34M | -760,960 | -8.36% | 2025-09-30 |
| Jpmorgan Chase & Co | $212,440.00 | 2.52% | 7.54M | +844,927 | +12.63% | 2025-09-30 |