COLB Insider Trading Activity and SEC Form 4 Filings
COLB insider trading summary
Over the past 12 months, insiders at Columbia Banking System, Inc. (COLB) reported 14 sales worth $1.0M by 5 insiders and 1 open-market purchase worth $22K by 1 insider on SEC Form 4. Net insider selling was $983K.
Latest COLB insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Oct 29, 2026 | Steven R Gardner | Director | Sell | $67K (2,151 @ $31.23) |
| Oct 29, 2026 | Steven R Gardner | Director | Sell | $10K (322 @ $31.24) |
| Oct 29, 2026 | Steven R Gardner | Director | Sell | $15K (484 @ $31.21) |
| Oct 29, 2026 | Steven R Gardner | Director | Sell | $70K (2,253 @ $31.25) |
| Oct 29, 2026 | Steven R Gardner | Director | Sell | $156K (5,012 @ $31.23) |
| Oct 29, 2026 | Steven R Gardner | Director | Sell | $6K (200 @ $31.23) |
| Oct 29, 2026 | Steven R Gardner | Director | Sell | $3K (100 @ $31.22) |
| Jun 30, 2026 | Aaron James Deer | EVP Chief Strategy/Innov Offcr | Buy | $22K (886 @ $25.37) |
| Jun 8, 2026 | Devine David Moore | EVP Chief Marketing Officer | Sell | $114K (3,812 @ $29.77) |
| Jun 8, 2026 | Devine David Moore | EVP Chief Marketing Officer | Sell | $2K (60 @ $29.77) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.