{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-106690","form_type":"8-K","ticker":"AUMN","cik":"0001011509","company_name":"Golden Minerals Co","filed_at":"2026-09-10T19:43:26+00:00","discovered_at":"2026-09-10T19:44:00.472494+00:00","generated_at":"2026-09-10T19:44:05.410798+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Golden Minerals CEO Castanos resigns; Watkins named CEO; Argentine project update","bullets":["Pablo Castanos resigns as President/CEO effective Sept 30, 2026, to pursue another opportunity; remains a director.","Board appoints David Watkins, director since 2009, as President/CEO effective Sept 30, 2026; no employment agreement yet.","Cascadero Copper agreed to sell Argentine interests (Sarita Este, Desierto) to Lumina Copper, a First Quantum affiliate.","Golden plans first-stage drill program at Desierto to test deep mineralization near First Quantum's Taca Taca project; details expected later in September."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-106690","json":"https://secwatch.observer/filing/0001104659-26-106690.json","markdown":"https://secwatch.observer/filing/0001104659-26-106690.md","text":"https://secwatch.observer/filing/0001104659-26-106690.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1011509/000110465926106690/0001104659-26-106690-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1011509/000110465926106690/tm2625163d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-10T19:44:05.410798+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":"29d550bd30","claim":"Pablo Castanos resigned as President and Chief Executive Officer at Golden Minerals Co.","evidence_excerpt":"Pablo Castanos notified Golden Minerals Company (the “Company”) of his resignation as President and Chief Executive Officer of the Company, effective September 30, 2026.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1011509/000110465926106690/0001104659-26-106690-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"President and Chief Executive Officer"}],"fact_type":"executive_change"},{"claim_id":"4adbe087f0","claim":"David H. Watkins was appointed as President and Chief Executive Officer at Golden Minerals Co.","evidence_excerpt":"the Board appointed David H. Watkins, a current member of the Board, as President and Chief Executive Officer of the Company, effective September 30, 2026.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1011509/000110465926106690/0001104659-26-106690-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"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}