Giem Judi's Form 4 filing
Columbia Banking System, Inc. (COLB) · filed Aug 18, 2026
- Accession no.
- 0000887343-26-000174
- Filed
- Aug 18, 2026, 4:50 PM ET
- Trade date
- Aug 14, 2026
- Filing delay
- 4 days
- Rule 10b5-1 plan
- Not checked
This filing lists 2 non-derivative transactions and 1 derivative transaction. It was filed 4 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Giem JudiCIK 0001813483 | Officer (EVP CHRO) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | Common Stock | MOption exerciseAcquired | +2,393 | $32.69 | +$78,227.17 | 2,393 | Direct | |
| Aug 14, 2026 | Common Stock | FTax withholdingDisposed | −643 | $32.69 | −$21,019.67 | 1,750 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | Common Stock | MOption exerciseDisposed | −2,393 | –F1 | – | 13,108 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F1
Restricted Stock Units convert into common stock on a one-for-one basis. On July 22, 2025, the reporting person was granted 7,179 Restricted Stock Units, which vest in three annual installments beginning on August 14, 2026.
Referenced by the price of 1 transaction in Table II.