

Drilling Supports Production Replacement, Defines Mineralized Extensions and Advances Newly Identified Targets Vancouver, British Columbia--(Newsfile Corp. - August 17, 2026) - Goldgroup Mining Inc. (TSXV: GORO) (NYSE American: GORO) (FSE: 55G) ("Goldgroup" or the "Company") is pleased to report selected drill results from its Don David Gold Mine ("DDGM") complex in Oaxaca, Mexico. During the seven months ended July 31, 2026, the Company completed 25,726 meters of diamond drilling in 123 holes, primarily comprising infill and expansion drilling at DDGM's producing underground Arista and Alta Gracia mines.

26,000-Metre Drill Program Underway as Company Advances Technical Study and Mine Plan for Formerly Producing Sonora Gold Mine Vancouver, British Columbia--(Newsfile Corp. - August 14, 2026) - Goldgroup Mining Inc. (TSXV: GORO) (NYSE American: GORO) (FSE: 55G) ("Goldgroup" or the "Company") is pleased to provide an update on its 100%-owned San Francisco Gold Project in Sonora, Mexico which represents a potentially transformative growth opportunity for Goldgroup. The project is a large-scale, formerly producing open-pit gold operation with substantial existing resources, established infrastructure, permitted mining operations and a significant exploration package.

Board Focused on Executing Growth Strategy Following Transformational Combination Vancouver, British Columbia--(Newsfile Corp. - July 27, 2026) - Goldgroup Mining Inc. (TSXV: GORO) (NYSE American: GORO) ("Goldgroup" or the "Company") today announced a leadership transition as the Company continues integrating its recently completed merger and advances its strategy of building a leading intermediate precious metals producer. Effective immediately, Javier Reyes, Chair of the Board of Directors, has been appointed Interim Chief Executive Officer while the Board commences a comprehensive search for a permanent Chief Executive Officer.

Vancouver, British Columbia--(Newsfile Corp. - July 23, 2026) - Goldgroup Mining Inc. (TSXV: GORO) (NYSE American: GORO) (FSE: 55G) ("Goldgroup" or the "Company") is pleased to provide shareholders with a corporate update following the successful merger with Gold Resource Corporation, marking the beginning of an exciting new chapter as the Company executes its strategy to build a leading intermediate precious metals producer. "Our integration is progressing well, and we are hitting the ground running," said Allen Palmiere, Chief Executive Officer.

Vancouver, British Columbia--(Newsfile Corp. - July 20, 2026) - Goldgroup Mining Inc. (TSXV: GGA) (NYSE American: GORO) (FSE: 55G0) ("Goldgroup" or the "Company") is pleased to announce the filing of an updated technical report titled "NI 43-101 Technical Report for the San Francisco Project, Sonora, Mexico" with an effective date of April 30, 2026 and a revised report date of July 16, 2026. The report was prepared by William J.

VANCOUVER, British Columbia & DENVER--(BUSINESS WIRE)--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 (“Me.

Vancouver, British Columbia and Denver, Colorado--(Newsfile Corp. - July 17, 2026) - Goldgroup Mining Inc. (TSXV: GGA) (OTCQX: GGAZF) ("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.

DENVER--(BUSINESS WIRE)--Gold Resource Corporation (NYSE American: GORO) (the “Company,” “we,” “our,” or “GRC”) announced that it has received notification from the FTSE Russell that following the Company's previously announced merger (the “Merger”) with Goldgroup Mining Inc. (“Goldgroup”), the combined company will not be eligible for inclusion in the Russell 2000 Comprehensive Factor Index beginning on July 20, 2026, as Goldgroup does not meet FTSE Russell's nationality eligibility requiremen.