Form 8-K - Current report:
SEC Accession No. 0000860413-25-000122
Filing Date
2025-08-18
Accepted
2025-08-18 17:11:46
Documents
12
Period of Report
2025-08-15
Items
Item 1.02: Termination of a Material Definitive Agreement
Item 8.01: Other Events
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K fibk-20250815.htm   iXBRL 8-K 30157
  Complete submission text file 0000860413-25-000122.txt   145514

Data Files

Seq Description Document Type Size
2 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT fibk-20250815.xsd EX-101.SCH 1773
3 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT fibk-20250815_lab.xml EX-101.LAB 21885
4 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT fibk-20250815_pre.xml EX-101.PRE 12502
14 EXTRACTED XBRL INSTANCE DOCUMENT fibk-20250815_htm.xml XML 2723
Mailing Address 401 NO 31ST STREET BILLINGS MT 59101
Business Address 401 NO 31ST STREET BILLINGS MT 59101 4062555311
FIRST INTERSTATE BANCSYSTEM INC (Filer) CIK: 0000860413 (see all company filings)

EIN.: 810331430 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 001-34653 | Film No.: 251228797
SIC: 6022 State Commercial Banks
(CF Office: 02 Finance)