Nixon Torran B 4
4 · COLUMBIA BANKING SYSTEM, INC. · Filed Mar 5, 2026
Insider Transaction Report
Form 4
Nixon Torran B
Senior Executive VP
Transactions
- Sale
Common Stock
[F1]2026-03-03$28.25/sh−2,241$63,308→ 100,469 total - Sale
Common Stock
[F1]2026-03-04$28.85/sh−2,240$64,624→ 98,229 total
Holdings
- 3,650(indirect: By Trust)
Common Stock
- 1,876(indirect: By 401(k))
Common Stock
Footnotes (1)
- [F1]Open market sale pursuant to a 10B5-1 Plan which was established by Reporting Person on November 25, 2025, in accordance with Rule 10B5-1 of the Securities Exchange Act of 1934, as amended.
Signature
/s/ Andrea M. Newburn, Attorney-in-fact|2026-03-05