{"schema_version":"secwatch.filing_event.v1","accession":"0000842517-25-000193","form_type":"8-K","ticker":"ISBA","cik":"0000842517","company_name":"ISABELLA BANK CORP","filed_at":"2025-09-30T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.484011+00:00","generated_at":"2026-05-17T05:20:40.614619+00:00","sec_items":["5.03","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"high","headline":"Isabella Bank Board approves amended bylaws with exclusive-forum and governance updates","bullets":["Board adopted Second Amended and Restated Bylaws on Sept 24, 2025, effective immediately.","Adds exclusive forum provision for certain shareholder lawsuits against the corporation.","Establishes procedures for shareholder proposals, director nominations, and nominee questionnaires.","Permits remote electronic participation for shareholder and board meetings per Michigan law."],"urls":{"canonical":"https://secwatch.observer/filing/0000842517-25-000193","json":"https://secwatch.observer/filing/0000842517-25-000193.json","markdown":"https://secwatch.observer/filing/0000842517-25-000193.md","text":"https://secwatch.observer/filing/0000842517-25-000193.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/842517/000084251725000193/0000842517-25-000193-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/842517/000084251725000193/isba-20250924.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T05:20:40.614619+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":"963cc439b08c057747d0306400f203706908758d","claim":"ISABELLA BANK CORP: On September 24, 2025, the Board approved and adopted the Second Amended and Restated Bylaws, effective immediately, which include provisions on annual and special shareholder meetings, proxy registration, meeting conduct, shareholder proposals and director nominations, remote meeting participation, (effective 2025-09-24).","evidence_excerpt":"On September 24, 2025, the Board of Directors (the \"Board\") of Isabella Bank Corporation, a Michigan corporation (the \"Corporation\"), approved and adopted the Second Amended and Restated Bylaws of the Corporation (the \"Amended Bylaws\"), effective immediately.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/842517/000084251725000193/0000842517-25-000193-index.htm","confidence":0.95,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2025-09-24"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}