COLB insider trading — Columbia Banking System, Inc.
No open-market insider purchases or sales were filed for Columbia Banking System, Inc. (COLB) in the last 90 days. Other insider transactions — such as stock awards, option exercises or tax withholding — are listed below.
Updated Oct 16, 2026.
Recent COLB insider transactions
Every Form 4 filed by Columbia Banking System, Inc. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Sep 4, 2026 | Gardner Steven R | Director | A · Grant/award | Direct | 2,577 | — | — | Form 4 |
| Sep 2, 2026 | Lagomarsino Simone | Director | A · Grant/award | Direct | 2,670 | — | — | Form 4 |
| Aug 14, 2026 | Giem Judi | EVP CHRO | M · Option exercise | Direct | 2,393 | $32.69 | $78K | Form 4 |
| Aug 14, 2026 | Giem Judi | EVP CHRO | F · Tax withholding | Direct | 643 | $32.69 | $21K | Form 4 |
COLB insider trading FAQ
Are insiders buying COLB stock?
Not on the open market. In the last 90 days, Columbia Banking System, Inc. insiders made no open-market purchases, and no open-market sales. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading COLB?
No insider bought or sold on the open market in the last 90 days.
Where does COLB insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.