{"schema_version":"secwatch.filing_event.v1","accession":"0000842517-26-000222","form_type":"8-K","ticker":"ISBA","cik":"0000842517","company_name":"ISABELLA BANK CORP","filed_at":"2026-09-21T20:30:15+00:00","discovered_at":"2026-09-21T20:31:09.330275+00:00","generated_at":"2026-09-21T20:31:49.098732+00:00","sec_items":["8.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Isabella Bank's merger with Grand River gets shareholder approval; close expected Q4 2026","bullets":["Grand River shareholders approved merger agreement at special meeting on Sept 18, 2026.","Merger structure: Merger Sub merges into Grand River, then Grand River into Isabella, then Grand River Bank into Isabella Bank.","Transaction expected to close in Q4 2026 subject to receipt of all regulatory approvals and customary closing conditions.","Ultimate survivor is Isabella Bank Corporation; Grand River Bank to merge into Isabella Bank."],"urls":{"canonical":"https://secwatch.observer/filing/0000842517-26-000222","json":"https://secwatch.observer/filing/0000842517-26-000222.json","markdown":"https://secwatch.observer/filing/0000842517-26-000222.md","text":"https://secwatch.observer/filing/0000842517-26-000222.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/842517/000084251726000222/0000842517-26-000222-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/842517/000084251726000222/isba-20260921.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-21T20:31:49.098732+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"}