# FIRST INTERSTATE BANCSYSTEM INC — DEF 14A

FIRST INTERSTATE BANCSYSTEM INC of BILLINGS, MT filed a DEF 14A with the SEC on 2011-03-31. Industry: State Commercial Banks.

## Filing

- Filed: 2011-03-31
- Form: DEF 14A
- Accession: 0000950123-11-031448
- Registrant: FIRST INTERSTATE BANCSYSTEM INC
- CIK: 0000860413
- Industry (SIC): State Commercial Banks (6022)
- State of incorporation: DE
- Location: BILLINGS, MT

## Documents (1)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEF 14A | DEF 14A |

## Filing timeline for this registrant (60)

_Showing 12 of 60 filings._

| Filed | Form |
| --- | --- |
| [2026-04-16](https://search.stillhousedata.com/proxy/0000860413-26-000027) | DEFA14A |
| [2026-04-16](https://search.stillhousedata.com/proxy/0000860413-26-000025) | DEF 14A |
| [2026-03-31](https://search.stillhousedata.com/proxy/0000860413-26-000017) | PRE 14A |
| [2025-05-16](https://search.stillhousedata.com/proxy/0000860413-25-000063) | DEFA14A |
| [2025-04-08](https://search.stillhousedata.com/proxy/0000860413-25-000046) | DEFA14A |
| [2025-04-08](https://search.stillhousedata.com/proxy/0000860413-25-000045) | DEF 14A |
| [2024-05-07](https://search.stillhousedata.com/proxy/0000860413-24-000068) | DEFA14A |
| [2024-04-30](https://search.stillhousedata.com/proxy/0000860413-24-000062) | DEFA14A |
| [2024-04-11](https://search.stillhousedata.com/proxy/0000860413-24-000054) | DEFA14A |
| [2024-04-11](https://search.stillhousedata.com/proxy/0000860413-24-000053) | DEF 14A |
| [2023-05-12](https://search.stillhousedata.com/proxy/0000860413-23-000095) | DEFA14A |
| [2023-05-05](https://search.stillhousedata.com/proxy/0000860413-23-000084) | DEFA14A |

## More

- [CIK 860413 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=860413&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000950123-11-031448.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.