secwatch.observer — SEC 8-K summary
======================================

Issuer:     Golden Minerals Co (AUMN)
CIK:        0001011509
Form:       8-K
Filed at:   2026-09-10T19:43:26+00:00
Accession:  0001104659-26-106690
Event type: leadership
Sentiment:  neutral
Materiality: 0.60
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Golden Minerals CEO Castanos resigns; Watkins named CEO; Argentine project update
--------------------------------------------------------------------------------

- 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.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1011509/000110465926106690/0001104659-26-106690-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1011509/000110465926106690/tm2625163d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-26-106690

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer