Golden Minerals Company

Golden Minerals outlines a late-September CEO change and plans a first-stage drill program at its Desierto concessions in Argentina. Golden Minerals (AUMN) announced a CEO transition and an update on its Argentine projects effective September 30, 2026. President and CEO Pablo Castanos will resign on that date to pursue another opportunity but will remain on the board. Director David Watkins, with exploration geology and global mine development experience, will become President and CEO while continuing as a director. The company also highlighted that its partner in the Sarita Este and Desierto projects, Cascadero Copper, has agreed to sell its interests in these and other Argentine properties to Lumina Copper, an affiliate of First Quantum Minerals.

If that transaction closes, Golden expects to work with First Quantum and is planning a first-stage drill program at Desierto targeting potentially deep mineralization, with drilling details expected later in September. AI-generated analysis. How Rhea-AI works . Not financial advice. DENVER, CO / ACCESS Newswire / September 4, 2026 / Golden Minerals Company ("Golden Minerals," "Golden" or the "Company") (OTCQB:AUMN) and (TSX:AUMN) announces that Pablo Castanos has notified the Company of his resignation from the offices of President and CEO, effective September 30, 2026 to pursue another opportunity.

Mr. Castanos will continue to serve as a director of the Company. The Company's Board of Directors (the "Board") thanks Mr. Castanos for his service and efforts over the past three years. The Board has appointed David Watkins, a director of the Company since 2009, as President and CEO of the Company, effective September 30, 2026, and Mr. Watkins will continue to serve as a director of the Company. Mr. Watkins is an exploration geologist and seasoned mining executive with a track record of the discovery and development of multiple base and precious metals mines around the world.

Additionally, the Company notes that its partner in the Sarita Este and Desierto projects in Argentina, Cascadero Copper Corporation, stated in its September 1, 2026 news release that it had agreed to sell its interests in these and other properties in Argentina to Lumina Copper Corporation, a wholly-owned affiliate of First Quantum Minerals, Ltd. ("First Quantum"). If the sale is completed, Golden looks forward to working with First Quantum. Golden is planning a first-stage drill program to test potentially deep mineralization similar to mineralization at First Quantum's Taca Taca project immediately north of Golden's targets at the Desierto concessions.

The Company expects to announce the details of its drilling program later in September. , and the completion and timing thereof. These statements are subject to risks and uncertainties, including increases in costs and declines in general economic conditions; changes in political conditions, in tax, royalty, environmental and other laws in the United States, Mexico, Argentina and other jurisdictions in which the Company operates or may operate; risks associated with joint ventures and international operations; and fluctuations in silver and gold prices.

Golden Minerals assumes no obligation to update this information. ca , including the Company's Annual Report on Form 10-K for the year ended December 31, 2025. com/ or contact: Golden Minerals Company (303) 839-5060 SOURCE: Golden Minerals Company Golden Minerals announced that President and CEO Pablo Castanos will resign effective September 30, 2026 . Director David Watkins, who has served on the board since 2009, will become President and CEO on the same date while continuing as a director. Yes. Although Pablo Castanos will resign as President and CEO effective September 30, 2026 to pursue another opportunity, he will continue to serve as a director of Golden Minerals.

David Watkins has been a director of Golden Minerals since 2009 . He is described as an exploration geologist and seasoned mining executive with a track record in discovering and developing multiple base and precious metals mines around the world. Golden Minerals noted that its partner Cascadero Copper agreed to sell its interests in the Sarita Este and Desierto projects and other Argentine properties to Lumina Copper, an affiliate of First Quantum Minerals, and said it looks forward to working with First Quantum if the sale is completed.