# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000860413-25-000117
Filing Date
2025-08-06
Accepted
2025-08-06 16:16:35
Documents
92
Period of Report
2025-06-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-Q | fibk-20250630.htm iXBRL | 10-Q | 3810281
2 | EX-10.2 | fibk-20250630xex102.htm | EX-10.2 | 80833
3 | EX-31.1 | fibk-20250630xex311.htm | EX-31.1 | 10058
4 | EX-31.2 | fibk-20250630xex312.htm | EX-31.2 | 10226
5 | EX-32 | fibk-20250630xex32.htm | EX-32 | 4030
| Complete submission text file | 0000860413-25-000117.txt |  | 19332822

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
6 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | fibk-20250630.xsd | EX-101.SCH | 73796
7 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | fibk-20250630_cal.xml | EX-101.CAL | 129319
8 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | fibk-20250630_def.xml | EX-101.DEF | 640242
9 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | fibk-20250630_lab.xml | EX-101.LAB | 890584
10 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | fibk-20250630_pre.xml | EX-101.PRE | 834830
94 | EXTRACTED XBRL INSTANCE DOCUMENT | fibk-20250630_htm.xml | XML | 4612294

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: 10-Q | Act: 34 | File No.: 001-34653 | Film No.: 251189815
SIC: 6022 State Commercial Banks
(CF Office: 02 Finance)