Form 4 for COLB COLUMBIA BANKING SYSTEM, INC.
Accepted 2026-03-17 00:00:00 ET · period of report 2026-03-13 · accession 0001810107-26-000007 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-03-17 | 2026-03-13 | COLB | Deer Aaron James | EVP Chief Strategy, Innov Offcr | F - Tax | $26.23 | -617 | 41.9K | -1% | -$16.2K |
| D | 2026-03-17 | 2026-03-13 | COLB | Deer Aaron James | EVP Chief Strategy, Innov Offcr | M - OptEx | $26.23 | +1,567 | 42.5K | +4% | +$41.1K |
| D | 2026-03-17 | 2026-03-13 | COLB | Deer Aaron James | EVP Chief Strategy, Innov Offcr | M - OptEx | $0.00 | -1,567 | 7,133 | -18% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-03-13 | F | D | 617 | $26.23 | 41,875 | D | — | — | |
| 2 | Common | Common Stock | 2026-03-13 | M | A | 1,567 | $26.23 | 42,492 | D | — | — | |
| 3 | Derivative | Restricted Stock Unit | 2026-03-13 | M | D | 1,567 | $0.00 | 7,133 | D | — · — to — | 1,567 Common Stock | (F1) Restricted Stock Units convert into common stock on a one-for-one basis. On February 25, 2025, the reporting person was granted 4,699 Restricted Stock Units, which vest in three annual installments beginning on March 13, 2026. |