Goldgroup Mining Inc. Common Shares (GORO)

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.

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 requirements within the Russell Index family, apparently based on Goldgroup’s Canadian home country indicators. Previously, GRC had been added to certain Russell Indexes effective after the market close on June 26, 2026 in connection with the annual and semi-annual Russell U.S. Indexes reconstitution. Subject to obtaining all required approvals and the satisfaction or waiver of all required closing conditions for the Merger, the Merger is expected to be consummated after the market close on July 17, 2026.

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 subject to obtaining all required approvals, including the approval of the TSX Venture Exchange, and the satisfaction or waiver of all required closing conditions for 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, Goldgroup’s common shares are expected to commence trading under the ticker symbol “GORO” on the NYSE American LLC (the “NYSE American”) after the closing of the Merger.

Gold Resource Corporation (NYSE American: GORO) (the “Company,” “we,” “our,” or “GRC”) today announced that, at the Company’s Special Meeting of Shareholders held this morning, our shareholders approved the previously announced Arrangement Agreement and Plan of Merger, dated January 25, 2026 and amended on May 15, 2026, by and among the Company, Goldgroup Mining Inc., a corporation incorporated under the laws of the province of British Columbia (“Goldgroup”), and Goldgroup Merger Sub Inc., a Colorado corporation and wholly owned subsidiary of Goldgroup (“Merger Sub”), pursuant to which Merger Sub will merge with and into the Company, with the Company surviving as a wholly owned subsidiary of Goldgroup (the “Merger”). Subject to obtaining all required approvals and the satisfaction or waiver of all required closing conditions, the Merger is expected to close on or about July 17, 2026, following completion of a share consolidation by Goldgroup.

Former Attorney General of Louisiana Charles C. Foti, Jr., Esq. and the law firm of Kahn Swick & Foti, LLC (“KSF”) are investigating the proposed sale of Gold Resource Corporation (NYSE: GORO) to Goldgroup Mining Inc. (OTC: GGAZF). Under the terms of the proposed transaction, shareholders of Gold Resource will receive 1.4476 common shares of Goldgroup for each share of Gold Resource that they own. KSF is seeking to determine whether this consideration and the process that led to it are adequate, or whether the consideration undervalues the Company.

Gold Resource Corporation (NYSE American: GORO) (the “Company,” “we,” “our,” or “GRC”) today announced updates regarding our upcoming Special Meeting of Shareholders (the “Special Meeting”) scheduled for July 2, 2026. The definitive proxy statement has been filed with the Securities and Exchange Commission (the “SEC”), and mailing has been completed to shareholders of record as of May 26, 2026.

Gold Resource Corporation (NYSE American: GORO) (the “Company”) is pleased to announce the first quarter production results from its Don David Gold Mine. During the quarter, the Company’s production included sales of 374,232 ounces of silver, 1,548 ounces of gold, and a total gold equivalent (“AuEq”) ounces of 8,749. Total cash costs were $2,164 per AuEq ounce, and with continued investment in the mine infrastructure and drilling resulted in an all-in sustaining cost of $3,476 per AuEq ounce. The Company had a net income of $4.7 million, or $0.03 per share, for the quarter.

Gold Resource Corporation (NYSE American: GORO) (the “Company”) today announced that it has engaged Responsible Mining Solutions Corp. (“RMS”) a part of SLR Consulting Ltd. (“SLR”), to complete a comprehensive feasibility study (the “Feasibility Study”) for the Company’s wholly owned Back Forty project, located in the Upper Peninsula of Michigan.

Gold Resource Corporation (NYSE American: GORO) (the “Company”) is pleased to announce its full-year operational results from its Don David Gold Mine (“DDGM”) near Oaxaca, Mexico, and a corporate update on its other activities.

Gold Resource Corporation (NYSE American: GORO) (the “Company”) announces that the illegal blockade previously restricting access to its mine in Oaxaca, Mexico has been lifted, allowing mining and processing operations to safely resume.

Former Attorney General of Louisiana Charles C. Foti, Jr., Esq. and the law firm of Kahn Swick & Foti, LLC (“KSF”) are investigating the proposed sale of Gold Resource Corporation (NYSE: GORO) to Goldgroup Mining Inc. (OTC: GGAZF). Under the terms of the proposed transaction, shareholders of Gold Resource will receive 1.4476 common shares of Goldgroup for each share of Gold Resource that they own. KSF is seeking to determine whether this consideration and the process that led to it are adequate, or whether the consideration undervalues the Company.

Issued on behalf of Lake Victoria Gold Ltd.

Halper Sadeh LLC, an investor rights law firm, is investigating whether the sale of Gold Resource Corporation (NYSE American: GORO) to Goldgroup Mining Inc. for 1.4476 common shares of Goldgroup for each share of Gold Resource common stock is fair to Gold Resource shareholders.

Gold Resource Corporation (NYSE American: GORO) (the “Company,” “we,” “our,” or “GRC”) is pleased to announce that it has entered into a definitive arrangement agreement and plan of merger (the “Arrangement Agreement”) with Goldgroup Mining Inc. (TSX-V: GGA; OTC: GGAZF) (“Goldgroup”), whereby Goldgroup has agreed to acquire all of the issued and outstanding shares of the Company’s common stock (the “Transaction”).

Gold Resource Corporation (NYSE American: GORO) (the “Company”) announced today that an illegal blockade is underway at its mine in Oaxaca, Mexico that will affect production. The Company received notice from the CTM union that four contractors operating at the mine site are no longer affiliated with the union. Pursuant to the terms of the CTM union agreement, the Company issued termination notices to the four contractors who provide camp support, security, ore haulage, water haulage, and employee transportation. Approximately 20 employees of the terminated contractors established an illegal mine-access blockade, resulting in the work stoppage.

Gold Resource Corporation (NYSE American: GORO) (the “Company”) is pleased to announce preliminary fourth quarter production results from its Don David Gold Mine that are a significant improvement from previous quarters and represents 45% of the full-year production for 2025. The net result is a significantly improved year-end balance sheet of $25 million and no debt. During the quarter, the Company’s production profile has transitioned into more of a silver producer, accounting for about 80% of its revenue, including a record sale of 663,503 ounces of silver, 1,785 ounces of gold and a total gold equivalent (AuEq) ounces of 10,413. For the twelve months ending December 31, 2025, the company sold 23,125 AuEq ounces.

Gold Resource Corporation (NYSE American: GORO) (the “Company,” “we,” “our,” or “GRC”) is pleased to report strong production results for the past two weeks, as mining advances into the high-grade Three Sisters area at the Don David Gold Mine in Oaxaca, Mexico.

Gold Resource Corporation (NYSE American: GORO) (the “Company”) is pleased to announce its third quarter operational results from its Don David Gold Mine (“DDGM”) near Oaxaca, Mexico.