UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 ------------------------------ FORM 8-K ------------------------------ CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (date of earliest event reported): January 3, 2025 ------------------------------ FIRST INTERSTATE BANCSYSTEM, INC. (Exact name of registrant as specified in its charter) ------------------------------ | | | (State or other jurisdiction of incorporation or organization ...