COLUMBIA BANKING SYSTEM (COLB) stock: insider trades, news & valuation
Net sellingShare price and insider trades
COLUMBIA BANKING SYSTEM insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $22K and 5 sold $677K of COLB stock on the open market.
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COLB insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | — | 0 |
| Q2 2026 | $22K | 1 | $115K | 2 |
| Q1 2026 | — | 0 | $562K | 5 |
Valuation, profit and volume
Summary
Over the past 12 months, 1 COLUMBIA BANKING SYSTEM, INC. insider reported open-market purchases totaling $22K, while 5 insiders reported sales totaling $677K. 2 of 7 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Jul 2SEC | Aaron James DeerEvp Chief Strategy/Innov Offcr | Buy | 88642,761 held (+2%) | $25.37 | $22K | +11.8% | — |
| Jun 10SEC | Devine David MooreEvp Chief Marketing Officer | Sell | 3,81218,636 held (−17%) | $29.78 | $114K | -4.7% | — |
| Jun 10SEC | Devine David MooreEvp Chief Marketing Officer | Sell | 6022,448 held (−0%) | $29.77 | $2K | -4.7% | — |
| Mar 17SEC | Kumi Yamamoto BaruffiGeneral Counsel | Sell | 93753,715 held (−2%) | $26.23 | $25K | +8.2% | — |
| Mar 17SEC | Brock LakelyEvp, Chief Accounting Officer | Sell | 21111,104 held (−2%) | $26.23 | $6K | +8.2% | — |
| Mar 5SEC | Torran B NixonSenior Executive Vp | Sell Plan | 2,24098,229 held (−2%) | $28.85 | $65K | -1.7% | — |
| Mar 5SEC | Torran B NixonSenior Executive Vp | Sell Plan | 2,241100,469 held (−2%) | $28.25 | $63K | +0.4% | — |
| Feb 3SEC | Steven R GardnerDirector | Sell | 13,725 | $29.43 | $404K | -3.6% | — |
Insiders at COLUMBIA BANKING SYSTEM, INC.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Steven R GardnerDirector | — | $404K | Feb 3, 2026 | — |
| Torran B NixonSenior Executive Vp | — | $128K | Mar 5, 2026 | — |
| Devine David MooreEvp Chief Marketing Officer | — | $115K | Jun 10, 2026 | — |
| Aaron James DeerEvp Chief Strategy/Innov Offcr | $22K | — | Jul 2, 2026 | — |
| Kumi Yamamoto BaruffiGeneral Counsel | — | $25K | Mar 17, 2026 | — |
| Brock LakelyEvp, Chief Accounting Officer | — | $6K | Mar 17, 2026 | — |
COLB stock: common questions
Are COLUMBIA BANKING SYSTEM, INC. insiders buying COLB stock?
In the past 12 months, 1 insiders reported open-market purchases of COLB worth $22K. The latest was Evp Chief Strategy/Innov Offcr Aaron James Deer bought $22K of COLB at $25.37 — first open-market purchase in our records.
Are COLUMBIA BANKING SYSTEM, INC. insiders selling COLB stock?
5 insiders reported sales worth $677K over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is COLB's 52-week range?
Over the past year COLB has traded between $22.90 and $33.20. It last closed at $28.37 on Oct 9, 2026.