Deer Aaron James 4

What Happened
Aaron Deer, EVP & Chief Strategy and Innovation Officer of Columbia Banking System, Inc. (COLB), received a grant of 4,001 restricted stock units (RSUs) on 2026-02-18. The grant is reported at an acquisition value of $31.24 per share, totaling $124,991. This was an award/compensation grant (not a purchase or sale).

Key Details

• Transaction date: 2026-02-18; reported on Form 4 filed 2026-02-20 (timely filing).
• Grant: 4,001 restricted stock units; per-share reported value $31.24; total reported value $124,991.
• Vesting: RSUs vest 33.33% per year over three years (footnote).
• Transaction code: A = Award/Grant (derivative securities).
• Shares owned after transaction: not specified in the filing.

Context
RSUs are a form of equity compensation that convert into shares (or cash equivalent) as they vest; they do not represent an immediate market purchase or sale. Such awards reflect executive compensation and, by themselves, are not a direct signal of buying or selling intent.