0000860413-25-000106.txt : 20250605 0000860413-25-000106.hdr.sgml : 20250605 20250605174746 ACCESSION NUMBER: 0000860413-25-000106 CONFORMED SUBMISSION TYPE: 3/A PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20250601 FILED AS OF DATE: 20250605 DATE AS OF CHANGE: 20250605 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Della Camera David CENTRAL INDEX KEY: 0002071416 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 3/A SEC ACT: 1934 Act SEC FILE NUMBER: 001-34653 FILM NUMBER: 251028381 MAIL ADDRESS: STREET 1: P.O. 30918 CITY: BILLINGS STATE: MT ZIP: 59116 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: FIRST INTERSTATE BANCSYSTEM INC CENTRAL INDEX KEY: 0000860413 STANDARD INDUSTRIAL CLASSIFICATION: STATE COMMERCIAL BANKS [6022] ORGANIZATION NAME: 02 Finance EIN: 810331430 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 401 NO 31ST STREET CITY: BILLINGS STATE: MT ZIP: 59101 BUSINESS PHONE: 4062555311 MAIL ADDRESS: STREET 1: 401 NO 31ST STREET CITY: BILLINGS STATE: MT ZIP: 59101 FORMER COMPANY: FORMER CONFORMED NAME: FIRST INTERSTATE BANCSYSTEM OF MONTANA INC DATE OF NAME CHANGE: 19930615 3/A 1 wk-form3a_1749160030.xml FORM 3/A X0206 3/A 2025-06-01 2025-06-04 0 0000860413 FIRST INTERSTATE BANCSYSTEM INC FIBK 0002071416 Della Camera David PO BOX 30918 BILLINGS MT 59116 0 1 0 0 Chief Financial Officer Common Stock 21706 D Includes 18,520 shares of common stock underlying unvested time-based vesting restricted stock units inadvertently omitted from the original filing. /s/ Kirk D. Jensen, as attorney in fact for reporting person 2025-06-04