FIRST INTERSTATE BANCSYSTEM INC — Investor Relations & Filings
Filings indexed
1,948
across all filing types
Latest filing
2026-05-26
Regulatory Filings
Country
US
United States of America
Listing
US
FIBK
First Interstate BancSystem, Inc. is a financial services holding company and the parent of First Interstate Bank. The bank operates on a community banking model, delivering a range of financial solutions to individuals, businesses, and communities across numerous states in the Western and Midwestern United States. Its offerings include personal and business banking products, lending services, and wealth management. The company emphasizes a disciplined approach focused on high-quality financial products, customer service, and socially responsible leadership within its local markets.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| S-3ASR | 2026-05-26 | English | |
| 8-K | 2026-05-13 | English | |
| 10-Q | 2026-05-07 | English | |
| 8-K | 2026-04-29 | English | |
| Major Shareholding Notification 2026 | 2026-04-29 | English | |
| DEFA14A | 2026-04-16 | English |
Browse filings by year
17 years| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
15 filings
| |||||
| 47073231 | S-3ASR | 2026-05-26 | English | ||
| 46141128 | 8-K | 2026-05-13 | English | ||
| 46141275 | 10-Q | 2026-05-07 | English | ||
| 46141385 | 8-K | 2026-04-29 | English | ||
| 46141255 | Major Shareholding Notification 2026 | 2026-04-29 | English | ||
| 46141419 | DEFA14A | 2026-04-16 | English | ||
| 46141417 | DEF 14A | 2026-04-16 | English | ||
| 46141439 | ARS | 2026-04-16 | English | ||
| 46141470 | PRE 14A | 2026-03-31 | English | ||
| 33051570 | SCHEDULE 13G/A - FIRST INTERSTATE BANCSYSTEM INC (0000860413) (Subject) | 2026-03-26 | English | ||
| 32980337 | 4 - FIRST INTERSTATE BANCSYSTEM INC (0000860413) (Issuer) | 2026-03-18 | English | ||
| 32980334 | 4 - FIRST INTERSTATE BANCSYSTEM INC (0000860413) (Issuer) | 2026-03-18 | English | ||
| 32980312 | 4 - FIRST INTERSTATE BANCSYSTEM INC (0000860413) (Issuer) | 2026-03-18 | English | ||
| 32980294 | 4 - FIRST INTERSTATE BANCSYSTEM INC (0000860413) (Issuer) | 2026-03-18 | English | ||
| 32968353 | 4 - FIRST INTERSTATE BANCSYSTEM INC (0000860413) (Issuer) | 2026-03-17 | English | ||
Market data
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FIRST INTERSTATE BANCSYSTEM INC via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/31290/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=31290 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=31290 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
Full reference: API reference · OpenAPI schema
cURL
$ curl https://api.financialreports.eu/api/filings/?company=31290 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 31290}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for FIRST INTERSTATE BANCSYSTEM INC (id: 31290)"
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