{"schema_version":"secwatch.filing_event.v1","accession":"0000842517-26-000158","form_type":"8-K","ticker":"ISBA","cik":"0000842517","company_name":"ISABELLA BANK CORP","filed_at":"2026-06-15T21:17:21+00:00","discovered_at":"2026-06-15T21:18:00.309684+00:00","generated_at":"2026-06-15T21:18:16.484445+00:00","sec_items":["1.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.8,"calibrated_materiality_score":0.8,"confidence":"high","headline":"Isabella Bank Corp signs merger with Grand River Commerce; $18.3M cash plus 839K shares","bullets":["65% stock / 35% cash mix; estimated ~$5.72 per share cash and ~0.1415 exchange ratio based on 9.12M Grand River shares.","Grand River shareholders will vote on merger; boards of both companies unanimously approved.","Closing requires regulatory approvals (Federal Reserve, Michigan DIFS), shareholder approval, Nasdaq listing, and tax opinion.","Grand River must pay a $2.18M termination fee if the deal terminates under specified circumstances.","Voting agreements secured from Grand River directors and officers to vote their shares in favor of the merger and charter amendment."],"urls":{"canonical":"https://secwatch.observer/filing/0000842517-26-000158","json":"https://secwatch.observer/filing/0000842517-26-000158.json","markdown":"https://secwatch.observer/filing/0000842517-26-000158.md","text":"https://secwatch.observer/filing/0000842517-26-000158.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/842517/000084251726000158/0000842517-26-000158-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/842517/000084251726000158/isba-20260611.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-15T21:18:16.484445+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":"6c992f087249fd8959f56cc75b57feec6319027c","claim":"ISABELLA BANK CORP entered into Agreement and Plan of Merger with Grand River Commerce, Inc. (effective 2026-06-11).","evidence_excerpt":"On June 11, 2026, Isabella Bank Corporation, a Michigan corporation (“Isabella”), 401 Merger Sub, Inc., a Michigan corporation and a wholly owned subsidiary of Isabella (“Merger Sub”), and Grand River Commerce, Inc., a Michigan corporation (“Grand River”), entered into an Agreement and Plan of Merger (the “Merger Agreement”).","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/842517/000084251726000158/0000842517-26-000158-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Agreement","value":"merger"},{"label":"Counterparty","value":"Grand River Commerce, Inc."},{"label":"Effective","value":"2026-06-11"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}