{"schema_version":"secwatch.filing_event.v1","accession":"0000842517-25-000126","form_type":"8-K","ticker":"ISBA","cik":"0000842517","company_name":"ISABELLA BANK CORP","filed_at":"2025-06-30T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.446073+00:00","generated_at":"2026-05-18T15:12:36.823809+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"Isabella Bank Corp director Chad R. Payton resigns effective June 30, 2025","bullets":["Chad R. Payton resigned from the Board of Directors and all board committees effective June 30, 2025.","Resignation also covers his position on the board of Isabella Bank, the company's subsidiary.","Mr. Payton's resignation was not due to any disagreement with the Corporation or the Board."],"urls":{"canonical":"https://secwatch.observer/filing/0000842517-25-000126","json":"https://secwatch.observer/filing/0000842517-25-000126.json","markdown":"https://secwatch.observer/filing/0000842517-25-000126.md","text":"https://secwatch.observer/filing/0000842517-25-000126.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/842517/000084251725000126/0000842517-25-000126-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/842517/000084251725000126/isba-20250630.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-18T15:12:36.823809+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"}