Goldgroup Mining and Gold Resource Corporation Announce Closing of Business Combination and Goldgroup’s Anticipated Listing on the NYSE American

Goldgroup Mining and Gold Resource Corporation Announce Closing of Business Combination and Goldgroup’s Anticipated Listing on the NYSE American

Goldgroup Mining Inc. (TSX-V: GGA; OTC: GGAZD) (“Goldgroup” or the “Company”) and Gold Resource Corporation (NYSE American: GORO) (“GRC”) are pleased to announce that they have closed the previously announced merger (the “Merger”) pursuant to the Arrangement Agreement and Plan of Merger, dated January 25, 2026 and amended on May 15, 2026, by and among GRC, Goldgroup, and Goldgroup Merger Sub Inc., a wholly owned subsidiary of Goldgroup (“Merger Sub”). At the effective time of the Merger, GRC merged with and into Merger Sub, with GRC surviving as a wholly owned subsidiary of Goldgroup. As a result of the Merger, GRC shareholders are entitled to receive 0.3619 common shares of Goldgroup for each share of GRC’s common stock.

Allen Palmiere, Goldgroup’s new President and Chief Executive Officer, remarked: “The business combination of Goldgroup and GRC represents a transformational milestone. With the combined assets and resources of both entities, we expect Goldgroup to become a leading, Mexico-focused junior precious metals producer. This represents a tremendous opportunity and we look forward to the continued growth and development of the Company.”