SEC Filing Summary for Deer Aaron James

This filing details transactions made by Deer Aaron James, EVP Chief Strategy/Innov Offcr at COLUMBIA BANKING SYSTEM, INC. On March 13, 2026, Mr. James acquired 1567 shares of Common Stock at a price of $26.23 per share, bringing his total post-transaction shares to 42492. In a separate transaction on the same day, he disposed of 617 shares of Common Stock at $26.23 per share, resulting in 41875 shares remaining. Additionally, 1567 Restricted Stock Units were converted into Common Stock. These RSUs were granted on February 25, 2025, and vest in three annual installments starting March 13, 2026, converting into common stock on a one-for-one basis.