{"schema_version":"secwatch.filing_event.v1","accession":"0000860413-24-000071","form_type":"8-K","ticker":"FIBK","cik":"0000860413","company_name":"FIRST INTERSTATE BANCSYSTEM INC","filed_at":"2024-05-23T23:59:59+00:00","discovered_at":"2026-05-14T18:03:22.159571+00:00","generated_at":"2026-06-01T09:30:31.741264+00:00","sec_items":["5.02","5.07","7.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"First Interstate shareholders approve 2M-share plan amendment; Board names Stephen B. Bowman as Chair","bullets":["Shareholders approved amendment to 2023 Equity and Incentive Plan, increasing reserved shares by 2,000,000.","All four Class III director nominees (Heyneman, Jahnke, Riley, Scott) elected to three-year terms.","Stephen B. Bowman appointed Chair of the Board, effective May 23, 2024, replacing David L. Jahnke.","Bowman served as CFO of Northern Trust until 2020; Jahnke remains on the Board."],"urls":{"canonical":"https://secwatch.observer/filing/0000860413-24-000071","json":"https://secwatch.observer/filing/0000860413-24-000071.json","markdown":"https://secwatch.observer/filing/0000860413-24-000071.md","text":"https://secwatch.observer/filing/0000860413-24-000071.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000071/0000860413-24-000071-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000071/fibk-20240520.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-01T09:30:31.741264+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"}