{"schema_version":"secwatch.filing_event.v1","accession":"0000860413-26-000078","form_type":"8-K","ticker":"FIBK","cik":"0000860413","company_name":"FIRST INTERSTATE BANCSYSTEM INC","filed_at":"2026-07-16T20:06:43+00:00","discovered_at":"2026-07-16T20:08:03.626030+00:00","generated_at":"2026-07-16T20:08:13.498764+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"First Interstate BancSystem appoints Matthew Ritter and Kevin Turner to board","bullets":["Appointed July 13, 2026 as Class II directors with terms expiring at 2029 annual meeting.","Ritter has 25+ years in finance/real estate/energy; Turner was COO of Microsoft (2005-2016).","Ritter joins Risk and Technology committees; Turner joins Audit and Technology committees.","Board expands to 13 members: 4 Class I, 5 Class II, 4 Class III directors.","Both directors deemed independent under NASDAQ rules; standard non-employee compensation."],"urls":{"canonical":"https://secwatch.observer/filing/0000860413-26-000078","json":"https://secwatch.observer/filing/0000860413-26-000078.json","markdown":"https://secwatch.observer/filing/0000860413-26-000078.md","text":"https://secwatch.observer/filing/0000860413-26-000078.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000078/0000860413-26-000078-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000078/fibk-20260713.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-07-16T20:08:13.498764+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":[{"claim_id":"52e6d0fe52","claim":"Matthew Ritter was appointed as Director at FIRST INTERSTATE BANCSYSTEM INC.","evidence_excerpt":"On July 13, 2026, the Board of Directors (the “Board”) of First Interstate BancSystem, Inc. (the “Company”) appointed Mr. Matthew Ritter and Mr. Kevin Turner to serve as Class II directors on the Board, each with a term expiring at the Company’s 2029 annual meeting of shareholders.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000078/0000860413-26-000078-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"72da2a6f04","claim":"Kevin Turner was appointed as Director at FIRST INTERSTATE BANCSYSTEM INC.","evidence_excerpt":"On July 13, 2026, the Board of Directors (the “Board”) of First Interstate BancSystem, Inc. (the “Company”) appointed Mr. Matthew Ritter and Mr. Kevin Turner to serve as Class II directors on the Board, each with a term expiring at the Company’s 2029 annual meeting of shareholders.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000078/0000860413-26-000078-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}