Columbia Banking System, Inc. (COLB) insider trading.
In Q3 2026, insiders at Columbia Banking System, Inc. reported 5 non-derivative transactions on 6 Forms 3, 4 and 5: 1 open-market purchase worth $22K and 0 sales.
- Transactions
- 5
- Purchases (P)
- 1
- Sales (S)
- 0
- Net shares, P minus S
- 886
- Insiders
- 4
- Last filed
- 2026-09-08
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Giem Judi | Officer · EVP CHRO | 2 | 0 | 0 |
| Gardner Steven R | Director | 1 | 0 | 0 |
| Lagomarsino Simone | Director | 1 | 0 | 0 |
| Deer Aaron James | Officer · EVP Chief Strategy/Innov Offcr | 1 | 1 | 0 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-04 | Gardner Steven R | A (A) | 2,577 | $0 | 2,577 | Form 4 |
| 2026-09-02 | Lagomarsino Simone | A (A) | 2,670 | $0 | 2,670 | Form 4 |
| 2026-08-14 | Giem Judi | M (A) | 2,393 | $32.69 | 2,393 | Form 4 |
| 2026-08-14 | Giem Judi | F (D) | 643 | $32.69 | 1,750 | Form 4 |
| 2026-06-30 | Deer Aaron James | P (A) | 886 | $25.37 | 42,761 | Form 4 |
Transaction codes in this quarter
Get COLB insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=887343&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · COLB company page · Columbia Banking System, Inc. on SEC.gov
Questions
Are insiders buying or selling Columbia Banking System, Inc. (COLB)?
In Q3 2026, insiders at Columbia Banking System, Inc. reported 5 non-derivative transactions on 6 Forms 3, 4 and 5: 1 open-market purchase worth $22K and 0 sales. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Columbia Banking System, Inc. insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/colb.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.