0001999371-24-003218.txt : 20240307 0001999371-24-003218.hdr.sgml : 20240307 20240307140521 ACCESSION NUMBER: 0001999371-24-003218 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240307 DATE AS OF CHANGE: 20240307 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: FIRST INTERSTATE BANCSYSTEM INC CENTRAL INDEX KEY: 0000860413 STANDARD INDUSTRIAL CLASSIFICATION: STATE COMMERCIAL BANKS [6022] ORGANIZATION NAME: 02 Finance IRS NUMBER: 810331430 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-34653 FILM NUMBER: 24729433 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 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: KNIERIEM KARLYN M CENTRAL INDEX KEY: 0001741432 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O GREAT WESTERN BANCORP, INC. STREET 2: 225 S MAIN AVENUE CITY: SIOUX FALLS STATE: SD ZIP: 57104 144 1 primary_doc.xml 144 0001741432 XXXXXXXX LIVE 0000860413 FIRST INTERSTATE BANCSYSTEM INC 001-34653 401 North 31st Street Billings, MT 59116-0918 406-255-5356 Karlyn Knieriem Chief Risk Officer Common APEX CLEARING

350 N ST. PAUL ST SUITE 300 DALLAS TX 75201

2900 75603.00 103940000 03/07/2024 Nasdaq Common 02/07/2022 Restricted Stock Award First Interstate Bancsystem Inc N 2900 02/07/2022 N/A Y 03/07/2024 /s/ Karlyn M Knieriem