{"schema_version":"secwatch.filing_event.v1","accession":"0000860413-25-000051","form_type":"8-K","ticker":"FIBK","cik":"0000860413","company_name":"FIRST INTERSTATE BANCSYSTEM INC","filed_at":"2025-04-28T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.492222+00:00","generated_at":"2026-05-23T05:28:01.369035+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"First Interstate selling 12 branches to Enterprise Bank & Trust for ~$740M deposits, ~$200M loans","bullets":["Enterprise Bank & Trust will acquire 12 branches (10 AZ, 2 KS) from First Interstate Bank.","Transaction includes $740M in deposits and $200M in loans, plus branch facilities and assets.","Closing expected by early Q4 2025, subject to regulatory approvals and customary conditions.","Enterprise pro forma: AZ deposits ~$1.3B (12 branches); Kansas City ~$1.1B (9 branches).","First Interstate says deal provides opportunity to shift capital and drive growth in higher-market-share areas."],"urls":{"canonical":"https://secwatch.observer/filing/0000860413-25-000051","json":"https://secwatch.observer/filing/0000860413-25-000051.json","markdown":"https://secwatch.observer/filing/0000860413-25-000051.md","text":"https://secwatch.observer/filing/0000860413-25-000051.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000051/0000860413-25-000051-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000051/fibk-20250428.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T05:28:01.369035+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"}