# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000860413-25-000060
Filing Date
2025-05-07
Accepted
2025-05-07 14:47:01
Documents
89
Period of Report
2025-03-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-Q | fibk-20250331.htm iXBRL | 10-Q | 3251089
2 | EX-31.1 | fibk-20250331xex311.htm | EX-31.1 | 10215
3 | EX-31.2 | fibk-20250331xex312.htm | EX-31.2 | 10362
4 | EX-32 | fibk-20250331xex32.htm | EX-32 | 4069
| Complete submission text file | 0000860413-25-000060.txt |  | 17528187

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
5 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | fibk-20250331.xsd | EX-101.SCH | 68400
6 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | fibk-20250331_cal.xml | EX-101.CAL | 126026
7 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | fibk-20250331_def.xml | EX-101.DEF | 610759
8 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | fibk-20250331_lab.xml | EX-101.LAB | 840851
9 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | fibk-20250331_pre.xml | EX-101.PRE | 802317
91 | EXTRACTED XBRL INSTANCE DOCUMENT | fibk-20250331_htm.xml | XML | 4081551

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.: 25920808
SIC: 6022 State Commercial Banks
(CF Office: 02 Finance)