secwatch.observer — SEC 8-K summary
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Issuer:     FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK:        0000860413
Form:       8-K
Filed at:   2025-03-19T23:59:59+00:00
Accession:  0000860413-25-000036
Event type: leadership
Sentiment:  neutral
Materiality: 0.40
Item codes: 5.02, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

First Interstate BancSystem announces two director retirements effective at 2025 annual meeting
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- Thomas E. Henning resigned per retirement age policy (age 72) as Class II director effective at 2025 annual meeting.
- Frances P. Grieb voluntarily retired from board effective at 2025 annual meeting; will not stand for re-election.
- Both directors joined board via Great Western Bancorp acquisition in 2022; will continue in current roles until effective date.
- Neither resignation relates to any disagreement with the company's operations, policies, or practices.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/860413/000086041325000036/0000860413-25-000036-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/860413/000086041325000036/fibk-20250314.htm
  HTML page:      https://secwatch.observer/filing/0000860413-25-000036

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer