{"schema_version":"secwatch.filing_event.v1","accession":"0000860413-25-000129","form_type":"8-K","ticker":"FIBK","cik":"0000860413","company_name":"FIRST INTERSTATE BANCSYSTEM INC","filed_at":"2025-08-28T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.508318+00:00","generated_at":"2026-05-17T09:35:19.233742+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Board approves $150M stock repurchase program through March 2027","bullets":["Authorizes repurchase of up to $150 million of common stock on or before March 31, 2027.","As of July 31, 2025, 104.86 million shares outstanding; closing price $32.20 on Aug 27.","Repurchases may be made via open market, private transactions, block trades, or Rule 10b5-1 plans.","Program may be suspended, terminated, or modified at any time; no obligation to repurchase any shares."],"urls":{"canonical":"https://secwatch.observer/filing/0000860413-25-000129","json":"https://secwatch.observer/filing/0000860413-25-000129.json","markdown":"https://secwatch.observer/filing/0000860413-25-000129.md","text":"https://secwatch.observer/filing/0000860413-25-000129.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000129/0000860413-25-000129-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000129/fibk-20250828.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T09:35:19.233742+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}