{"schema_version":"secwatch.filing_event.v1","accession":"0001437749-23-028329","form_type":"8-K","ticker":"MBWM","cik":"0001042729","company_name":"MERCANTILE BANK CORP","filed_at":"2023-10-17T23:59:59+00:00","discovered_at":"2026-05-14T18:03:28.001690+00:00","generated_at":"2026-06-09T22:22:18.025064+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Mercantile Bank announces CEO succession: Kaminski to retire June 2024, Reitsma appointed","bullets":["Kaminski to retire as President and CEO effective June 1, 2024; will remain on board.","Reitsma appointed President and CEO effective same date; currently EVP and COO.","Reitsma joined Mercantile in 2003; President of Mercantile Bank since Jan 2017.","Kaminski instrumental in Mercantile's formation in 1997; 40-year banking career."],"urls":{"canonical":"https://secwatch.observer/filing/0001437749-23-028329","json":"https://secwatch.observer/filing/0001437749-23-028329.json","markdown":"https://secwatch.observer/filing/0001437749-23-028329.md","text":"https://secwatch.observer/filing/0001437749-23-028329.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1042729/000143774923028329/0001437749-23-028329-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1042729/000143774923028329/mbwm20231016c_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-09T22:22:18.025064+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":"85d2b07ba1","claim":"Raymond E. Reitsma was appointed as President and Chief Executive Officer at MERCANTILE BANK CORP.","evidence_excerpt":"Raymond E. Reitsma will be appointed to those positions effective June 1, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1042729/000143774923028329/0001437749-23-028329-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"President and Chief Executive Officer"}],"fact_type":"executive_change"},{"claim_id":"b3609a5d47","claim":"Robert B. Kaminski, Jr. departed as President and Chief Executive Officer at MERCANTILE BANK CORP.","evidence_excerpt":"Robert B. Kaminski, Jr. intends to retire as President and Chief Executive Officer of Mercantile and Raymond E. Reitsma will be appointed to those positions effective June 1, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1042729/000143774923028329/0001437749-23-028329-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"President and Chief Executive Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}