{"schema_version":"secwatch.filing_event.v1","accession":"0000860413-25-000077","form_type":"8-K","ticker":"FIBK","cik":"0000860413","company_name":"FIRST INTERSTATE BANCSYSTEM INC","filed_at":"2025-06-02T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.493048+00:00","generated_at":"2026-05-20T03:43:36.333949+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"David P. Della Camera becomes CFO of First Interstate BancSystem effective June 1, 2025","bullets":["Della Camera succeeds Marcy D. Mutch as EVP and CFO under a planned succession announced February 2025.","Annual base salary of $500,000; eligible for annual incentive and equity compensation.","Severance: 1x base plus avg. cash bonus if terminated without cause or for good reason; 2x base plus 2x target bonus following a change in control.","Non-competition and non-solicitation restrictions extend 12 months (18 months after change in control).","Mutch transitions to executive advisor through 2025 and consultant through December 31, 2026."],"urls":{"canonical":"https://secwatch.observer/filing/0000860413-25-000077","json":"https://secwatch.observer/filing/0000860413-25-000077.json","markdown":"https://secwatch.observer/filing/0000860413-25-000077.md","text":"https://secwatch.observer/filing/0000860413-25-000077.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000077/0000860413-25-000077-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000077/fibk-20250601.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-20T03:43:36.333949+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":"e3b1c7d1ed","claim":"David P. Della Camera was appointed as Chief Financial Officer at FIRST INTERSTATE BANCSYSTEM INC.","evidence_excerpt":"Effective as of June 1, 2025, First Interstate BancSystem, Inc. (the “Company”), First Interstate Bank (the “Bank”) and David P. Della Camera completed and formally executed the Employment Agreement","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000077/0000860413-25-000077-index.htm","confidence":0.7,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}