Insider Transaction Report

Lori Meyer, EVP, Chief Information Officer of FIRST INTERSTATE BANCSYSTEM INC (FIBK), reported a transaction on March 15, 2026. Meyer acquired 3,012 shares of Common Stock at a price of $33.13 per share, increasing her post-transaction holdings to 15,820 shares. Additionally, Meyer holds 1,232 shares of Common Stock indirectly through a 401k plan. The shares acquired are issuable upon vesting of restricted stock units granted under the company's 2023 Equity and Incentive Plan, which vest in three equal annual installments starting March 15, 2027, contingent upon continued employment.