{"url_path":"/sec/isba/8-k/2026-06-12/item-7-01","section_key":"item-7-01","section_title":"Item 7.01 Regulation FD Disclosure","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-12","source_url":"https://www.sec.gov/Archives/edgar/data/842517/0000842517-26-000138-index.html","accession_number":"0000842517-26-000138","cik":"0000842517","ticker":"ISBA","issuer_name":"ISABELLA BANK CORP","edgar_url":"https://www.sec.gov/Archives/edgar/data/842517/0000842517-26-000138-index.html","primary_entity_key":"0000842517","primary_entity_name":"ISABELLA BANK CORP"},"word_count":193,"has_tables":true,"body_markdown":"Item 7.01 - Regulation FD Disclosure\n\nOn June 11, 2026, Isabella Bank Corporation, a Michigan corporation (“Isabella”), 401 Merger Sub, Inc., a Michigan corporation and a direct, wholly owned subsidiary of Isabella, and Grand River Commerce, Inc., a Michigan corporation (“Grand River”), entered into an Agreement and Plan of Merger (the “Merger Agreement”). On June 12, 2026, Isabella and Grand River issued a joint press release announcing the execution of the Merger Agreement. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.\n\nIn addition, Isabella is providing supplemental information regarding the proposed transaction. A copy of the investor presentation is furnished as Exhibit 99.2 to this Current Report on Form 8-K.\n\nThe information in this Item 7.01 and Exhibits 99.1 and 99.2 is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth in such filing."}