GORO

Javier Reyes Appointed Chief Executive Officer by Unanimous Decision of the Board of Directors Cash Balance US $59 Million and Zero Debt Vancouver, British Columbia--(Newsfile Corp. - August 31, 2026) - Goldgroup Mining Inc. (TSXV: GORO) (NYSE American: GORO) (FSE: 55G) ("Goldgroup" or the "Company") is pleased to announce that it has filed its financial statements and management's discussion and analysis ("MD&A") for the second quarter ended June 30, 2026. The Company is also pleased to announce that the Board of Directors of Goldgroup has appointed Mr. Javier Reyes, who had been serving as Interim Chief Executive Officer, as the Company's permanent Chief Executive Officer. Mr. Reyes is a mining entrepreneur and corporate executive with more than 25 years of leadership experience in the natural resources and financial sectors. Throughout his career, Mr. Reyes has founded, financed, acquired, and transformed several publicly traded companies, establishing a proven track record of executing complex recapitalizations, strategic transactions, and corporate turnarounds. In addition, the Company provides an update on activities across its expanded portfolio following the completion of its transformational combination with Gold Resource Corporation ("Gold Resource") on July 17, 2026. Q2 FINANCIAL REPORTING Goldgroup's second quarter financial statements and MD&A cover the three and six months ended June 30, 2026, and relate to Goldgroup's operations prior to completion of the transaction with Gold Resource. Importantly, the Q2 financial statements do not include the financial results or operating activities of Gold Resource. The transaction with Gold Resource was completed after the June 30, 2026 quarter-end and, accordingly, Gold Resource's results will be incorporated into Goldgroup's consolidated financial reporting beginning with the period in which the transaction closed. Javier Reyes, Chief Executive Officer and Chair of the Board of Goldgroup, commented: "The filing of our second quarter financial results marks an important reporting milestone for Goldgroup. However, shareholders should recognize that these results represent Goldgroup as it existed prior to the completion of our combination with Gold Resource and therefore do not reflect the financial contribution or operating performance of Don David or Back Forty." "The real significance for shareholders is what has happened since quarter-end. We have completed the transformational combination and are now operating a substantially larger company with two producing mines, a formerly producing operation being evaluated for a potential restart and a major development project. At the same time, we are advancing aggressive exploration and development programs across the portfolio." "Our focus is straightforward: grow production, expand resources, extend mine lives and advance San Francisco and Back Forty toward their next major milestones. We believe the combined company provides Goldgroup with a much stronger platform from which to create long-term shareholder value." Goldgroup Operating and Financial Results Summary for the Second Quarter Period Ending June 30, 2026 (1) This is a non-IFRS measure. For more information, including a reconciliation to the most comparable IFRS measure, refer to the "Non-IFRS Financial Measures" section of this MD&A. The completed combination with Gold Resource brings together Goldgroup's Mexican portfolio with Gold Resource's producing Don David Gold Mine in Oaxaca, Mexico and the Back Forty development project in Michigan, USA. The combined company now holds four 100%-owned precious-metals assets across Mexico and the United States, including two producing mines, a formerly producing mine under evaluation for re-start and an advanced development project. COMBINED COMPANY ENTERS NEXT PHASE OF GROWTH Following completion of the merger transaction, Goldgroup has moved rapidly to integrate the businesses while advancing exploration, production optimization and development activities across the portfolio. The Company is focused on building a larger-scale, diversified precious-metals producer through a combination of organic production growth, exploration success, mine optimization and disciplined project development. As of June 30, 2026, prior to the completion of the merger, Goldgroup had a cash balance of US$15.7 million and Gold Resource had a cash balance of US$43.3 million. On a pro forma basis, assuming the companies had been combined as of June 30, 2026, the combined company would have had a cash balance of US$59 million and no material debt. Sales data for the first half of the year, on a combined basis, is shown in the table below. Combined Sales June 30, 2026 Project Location Map To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/1060/312343_db803e12343ca810_001full.jpg Don David Gold Mine - Oaxaca, Mexico The Don David Gold Mine is now the Company's largest producing asset and is the focus of an aggressive exploration and resource-expansion program. The Company completed 25,726 metres of diamond drilling in 123 holes at the Don David complex with highly encouraging results (see news release dated August 17, 2026). The program focused primarily on infill and expansion drilling at the producing Arista and Alta Gracia mines, with the majority of the drilling directed toward resource definition and expansion. Up to six drill rigs were operating concurrently during the program. The Company is also advancing exploration of several highly prospective targets surrounding the existing mine infrastructure, with the objective of replacing and expanding resources, extending mine life and identifying additional mineralized structures. San Francisco - Sonora, Mexico Goldgroup is advancing the 100%-owned San Francisco Gold Project toward a potential production restart. A 26,000-metre diamond drilling program is underway, alongside technical studies and mine-planning activities designed to establish the optimal pathway toward a potential restart of the formerly producing open-pit operation. Existing infrastructure, including two open pits and heap-leach processing facilities, provides a significant foundation for evaluating a potential restart. The Company is targeting a potential restart in 2027, subject to completion of technical studies, mine planning, financing and other applicable requirements that support the Company restarting operations. Cerro Prieto - Sonora, Mexico The 100%-owned Cerro Prieto heap-leach gold mine continues to produce gold while the Company advances exploration and development drilling aimed at extending and potentially expanding the resource base. Cerro Prieto has been in production since 2013 and provides the Company with an existing operating platform in Sonora while exploration continues along the mineralized trend. Back Forty - Michigan, USA Goldgroup is also advancing the 100%-owned Back Forty project, a large-scale, gold-rich volcanogenic massive sulphide ("VMS") development project in Michigan, subject to the resolution of matters relating to the stream agreements described below and in the MD&A. Work is progressing on a feasibility study and related development activities. Back Forty provides the Company with a significant longer-term development opportunity and further diversifies Goldgroup's portfolio geographically and by deposit type. Back Forty is subject to gold and silver stream agreements under which a current Goldgroup subsidiary received US$37.2 million in exchange for a portion of future production. The agreements include funding, default and security provisions. The permitting milestone, previously extended to August 31, 2026, was not met, and Goldgroup is discussing a further amendment. If no amendment is obtained and the Company defaults, it may be required to repay amounts advanced, plus interest, and the counterparty may exercise secured party rights over the Back Forty assets. TECHNICAL REPORTS REFILED UNDER GOLDGROUP PROFILE Following completion of the merger with Gold Resource, the Company has filed the current technical reports for the Don David Gold Mine and the Back Forty Project under its SEDAR+ profile in accordance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101"). The reports support the previously disclosed technical and scientific information for the respective projects. EXPLORATION PIPELINE PROVIDES ADDITIONAL UPSIDE Beyond the Company's producing and advanced development assets, Goldgroup is continuing to evaluate and advance exploration opportunities across its portfolio. At Don David, the Company is pursuing multiple exploration targets, including some high-grade zones, with potential to extend known mineralized systems and identify new discoveries. The Company has also identified significant exploration potential at San Francisco and Cerro Prieto. The Company's objective is to create a portfolio in which existing production provides a foundation for growth, near-term development opportunities add additional production, and exploration provides the potential to expand resources and extend mine lives. BUILDING TOWARD INTERMEDIATE-PRODUCER SCALE Goldgroup's strategy is to build on its newly expanded portfolio to establish a diversified precious-metals company with increasing production, a growing resource base and multiple avenues for organic and inorganic growth. The combined portfolio now includes: Two producing gold mines - Don David in Oaxaca and Cerro Prieto in Sonora; San Francisco, a formerly producing open-pit gold mine in Sonora with substantial existing resources and infrastructure that is being studied for a potential restart of mining operations; and Back Forty, a VMS gold/silver development project in Michigan. The Company believes this combination creates a compelling platform for growth by bringing together current production, cash flow, near-term restart potential, advanced development and substantial exploration upside within a single company. MARKETING SERVICES AGREEMENT Goldgroup has entered into an arm's-length consulting services agreement, effective as of August 31, 2026, with First Globe Capital International Inc. ("FGC") of Vancouver, British Columbia, to support Goldgroup's investor outreach program. The Contractor is wholly owned by Mr. Anish Sunderji (the "Principal"). The term of the agreement is 12 months, unless the Company elects to renew it. The agreement is also subject to the acceptance of the TSX Venture Exchange (the "TSXV"). As compensation for the services provided by FGC pursuant to this agreement, the Company shall grant the Principal 500,000 stock options in accordance with the Company's omnibus equity incentive plan and the policies of the TSXV and the NYSE American and pay the Contractor a monthly cash retainer of CAD$5,000.00. FGC is a capital markets advisory and investor relations firm that assists public issuers with investor outreach, marketing initiatives, roadshows, and introductions to potential investors. To the knowledge of the Company, FGC and the Principal are arm's length to the Company and currently do not own any securities of the Company, nor do they have any right or intent to acquire such securities, except as may be acquired through normal market transactions. QUALIFIED PERSON The scientific and technical information contained in this news release was prepared under the supervision of and has been reviewed and approved by Christopher Richings, P.Eng, Vice President Technical Services of Goldgroup Mining Inc., a Qualified Person as defined by National Instrument 43-101. Mr. Richings is an employee of the Company and is not independent of the Company. On behalf of the Board of Directors "Javier Reyes" Javier Reyes, Chairman and CEO For more information: +1 (604) 306-6867410 - 1111 Melville St.Vancouver, BC, V6E 3V6 [email protected] Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this press release. NON-IFRS PERFORMANCE MEASURES This news release discloses average realized price per ounce, which is a non-IFRS financial measures. The measure is calculated by dividing the net consolidated gold sales by the consolidated gold ounces sold. The measure is calculated on a consistent basis for the periods presented on a consolidated basis. Average realized price per ounce statistics are intended to provide additional information only, do not have any standardized meaning prescribed by IFRS and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS. The measures are not necessarily indicative of operating profit or cash flow from operations as determined under IFRS. Other companies may calculate these measures differently. The following table provides a reconciliation between non-IFRS average realized price per ounce to the most directly comparable IFRS measure for the three and six months ended June 30, 2026: ABOUT GOLDGROUP MINING INC. Goldgroup Mining Inc. is a precious-metals producer and growth-oriented mining company with four 100%-owned assets across Mexico and the United States. The Company owns and operates the Don David Gold Mine in Oaxaca, Mexico and the Cerro Prieto Gold Mine in Sonora, Mexico, while advancing the San Francisco Gold Project in Sonora toward a potential production restart and the Back Forty Project in Michigan toward development. Goldgroup's strategy is focused on building a larger-scale intermediate precious-metals producer through a combination of production growth, exploration, mine optimization, project development and disciplined capital allocation. The Company is listed on the TSX Venture Exchange and NYSE American under the symbol "GORO" and on the Frankfurt Exchange under the symbol "55G0." Cautionary Notes Regarding Forward-Looking Information Certain statements contained in this news release constitute "forward-looking information" within the meaning of applicable Canadian securities law and "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995 and are intended to be covered by the safe-harbour provisions of applicable Canadian and United States securities laws. Forward-looking statements relate to analyses and other information that are based on forecasts of future results, as well as estimates and assumptions of management. These forward-looking statements reflect Goldgroup's current internal projections, expectations or beliefs and are based on information currently available to Goldgroup. In some cases, forward-looking information can be identified by terminology such as "may," "will," "should," "expect," "intend," "plan," "anticipate," "believe," "estimate," "projects," "potential," "scheduled," "forecast," "budget" or the negative of those terms or other comparable terminology. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Forward-looking information in this news release includes, but is not limited to, statements regarding the anticipated benefits of the combination with Gold Resource, the integration of the businesses, future production and growth opportunities, exploration and drilling programs, mineral resource expansion, mine-life extension, the potential restart of the San Francisco Gold Project, the advancement and development of the Back Forty Project, the outcome of discussions relating to the Back Forty stream agreements, future operational and development milestones, and the Company's growth strategy and objectives. Forward-looking information is based on a number of assumptions that management believes are reasonable as of the date of this news release, including assumptions regarding the successful integration of the businesses, the availability of financing, personnel and equipment, the receipt of required permits and approvals, prevailing commodity prices, and the Company's ability to execute its exploration, development and operating plans. Forward-looking information is subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual events or results to materially differ from those reflected in the forward-looking information, including, risks relating to integration of the combined business, exploration and development activities, permitting and regulatory approvals, operating performance, commodity prices, financing, the Back Forty stream agreements, and general economic, market and industry conditions. Additional information regarding these and other risk factors and uncertainties is disclosed in Goldgroup's annual information form dated June 10, 2026 and other continuous disclosure materials available under the Company's profile on SEDAR+ at www.sedarplus.ca. Any and all of the forward-looking information contained in this news release is qualified by these cautionary statements. Although Goldgroup believes that the forward-looking information contained in this news release is based on reasonable assumptions, readers cannot be assured that actual results will be consistent with such statements. Accordingly, readers are cautioned against placing undue reliance on forward-looking information. Goldgroup expressly disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, events or otherwise, except as may be required by, and in accordance with, applicable securities laws. 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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. Active Exploration Program Advancing Growth Opportunities The program comprised approximately 16,249 meters of infill drilling, 8,794 meters of expansion drilling and 683 meters of ore-control drilling, with more than 97% of the total directed toward infill and expansion programs. During the period, up to five underground drill rigs and two surface drill rigs were deployed, with a maximum of six rigs operating concurrently. This release also includes selected previously unpublished results from the second half of 2025 that remain relevant to unmined extensions, emerging targets or the current geological interpretation. Arista Mine At the Arista Mine, the program returned mineralized intercepts from the Three Sisters-Gloria and Arista vein systems, including mineralized intersections within the Gloria corridor. Drilling continued to define the Marena North, Splay 31, and Viridiana vein extensions and to advance the recently identified Isabel SE and Laura vein targets. The results support near-term mine planning and ongoing production-replacement drilling while identifying areas with potential for future resource additions. Alta Gracia Mine At the Alta Gracia Mine, where exploration drilling recommenced in November 2025, the program progressed from surface expansion drilling to underground infill and expansion drilling. Mining restarted on February 20, 2026, and continued drilling returned significant silver-gold intercepts from the Mirador and Independencia vein systems and related structures. Drill Highlights Arista Mine: Three Sisters–Gloria vein system: Sadie 1 – Hole 525086: 1.92 meters ETW grading 13.49 g/t Au, 931 g/t Ag and 26.78 g/t AuEq, including 1.11 meters ETW grading 20.00 g/t Au, 1,155 g/t Ag and 36.48 g/t AuEq. Arista Mine: Arista vein system: Viridiana – Hole 526010: 5.59 meters ETW grading 0.49 g/t Au, 442 g/t Ag and 6.80 g/t AuEq, including 1.78 meters ETW grading 0.51 g/t Au, 1,309 g/t Ag and 19.19 g/t AuEq. Alta Gracia Mine: Independencia W1 – Hole 426014: 2.55 meters ETW grading 1.66 g/t Au, 1,695 g/t Ag and 25.85 g/t AuEq, including 0.95 meters ETW grading 3.00 g/t Au, 3,460 g/t Ag and 52.38 g/t AuEq. "Don David currently has two producing mines with substantial exploration opportunities across multiple mineralized vein systems," said Javier Reyes, Chair and Interim Chief Executive Officer. "Our ongoing drilling continues to improve our understanding of the mineralized systems and identify opportunities beyond current mining areas. Our objective isn't simply to replace what we mine, but also to continue discovering and defining mineralization with the potential to extend mine life, grow our resource base and create long-term shareholder value. We believe we're only beginning to unlock Don David's full potential." Table 1. Selected Drill Results from the Arista Mine: Arista (ART) and Three Sisters-Gloria (3SG) Vein Systems, and the Alta Gracia Mine (AGR). To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/1060/309847_gorotableone.jpg Notes: ETW = Estimated True Width. AuEq is calculated using gold and silver only, based on metal prices of US$3,680/oz Au and US$49.62/oz Ag and 2026 YTD DDGM plant recovery assumptions of 76.79% Au and 81.28% Ag. The resulting recovery-adjusted Au:Ag equivalency ratio is approximately 70.07:1. Individual values may not sum due to rounding. Table 2. Drill Hole Collar and Orientation Information To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/1060/309847_gorotabletwo.jpg Notes: Coordinates are reported in UTM Zone 14N, WGS 84. Azimuth and dip represent surveyed hole orientations at the collar (0 m). Total depth represents the final recorded hole depth. Detailed Target Descriptions and Maps Selected results presented in Table 1 are previously unpublished drill results from the second half of 2025 and from drilling completed during the seven months ended July 31, 2026. The following sections provide geological context for these results, including their relevance to production replacement and near-term mine planning, extensions of mineralized vein systems with potential for future resource additions, and the advancement of exploration targets at the Arista and Alta Gracia mines. Arista Mine Plan View - 2026 Drill Holes through July 31, 2026, with Selected 2025-2026 Results Highlighted To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/1060/309847_c9c3524b44e4f934_003full.jpg Notes: Selected 2025-2026 drill holes are highlighted in black. All other 2026 drill holes through July 31, 2026 are shown in blue. Existing underground mine development is shown in grey for reference. Arista Mine – Three Sisters-Gloria Vein Systems Drilling within the Three Sisters–Gloria vein systems focused on infill and expansion of the Sandy, Sadie and Sasha vein sets, the Dalia vein, and the Gloria vein system. Infill drilling adjacent to current and planned mining areas continued to refine vein geometry and grade distribution, supporting ongoing production replacement and near-term mine planning. Drilling from the Level 800 Gloria drill station intersected multiple mineralized structures, including Gloria and associated splays, improving the geological interpretation and identifying additional areas for follow-up drilling. Three Sisters has progressed from an exploration target into an established source of mine feed, while the broader Three Sisters–Gloria area remains a priority for continued resource definition and potential future resource additions. Cross Section A–A′ – North Arista and Three Sisters–Gloria Vein Systems – Selected 2025–2026 Drill Holes To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/1060/309847_c9c3524b44e4f934_004full.jpg Notes: Selected 2025-2026 drill holes are highlighted in black. Other 2026 drill holes through July 31, 2026 are shown in grey. Existing underground mine development is shown in brown for reference. Hole No. 525086 – Sadie 1: 1.92 meters ETW grading 13.49 g/t Au, 931 g/t Ag and 26.78 g/t AuEq, including 1.11 meters ETW grading 20.00 g/t Au, 1,155 g/t Ag and 36.48 g/t AuEq. Hole No. 526018 – Sandy 5: 5.59 meters ETW grading 1.29 g/t Au, 413 g/t Ag and 7.18 g/t AuEq, including 1.63 meters ETW grading 1.67 g/t Au, 969 g/t Ag and 15.50 g/t AuEq. Hole No. 526035 – Gloria: 3.80 meters ETW grading 3.39 g/t Au, 74 g/t Ag and 4.44 g/t AuEq, including 0.74 meters ETW grading 5.44 g/t Au, 107 g/t Ag and 6.97 g/t AuEq. Splay Gloria: 4.40 meters ETW grading 0.57 g/t Au, 31 g/t Ag and 1.01 g/t AuEq. Hole No. 525061 – Marena North: 5.53 meters ETW grading 3.21 g/t Au, 169 g/t Ag and 5.62 g/t AuEq, including 2.56 meters ETW grading 6.32 g/t Au, 287 g/t Ag and 10.42 g/t AuEq. Hole No. 526012 – Marena North: 4.60 meters ETW grading 1.69 g/t Au, 106 g/t Ag and 3.20 g/t AuEq, including 1.60 meters ETW grading 4.72 g/t Au, 297 g/t Ag and 8.96 g/t AuEq. Splay 31: 10.90 meters ETW grading 0.42 g/t Au, 38 g/t Ag and 0.97 g/t AuEq, including 2.54 meters ETW grading 1.51 g/t Au, 135 g/t Ag and 3.44 g/t AuEq. Arista Mine – Arista Vein System Drilling within the Arista vein system focused on infill drilling of established structures, including the Viridiana–Gisela vein set, and on further definition of the Marena North and Splay 31 northwest extensions. Results from areas adjacent to current and planned mining continued to refine vein geometry and support ongoing production replacement and near-term mine planning. Drilling at Marena North and Splay 31 extended the geological interpretation toward the northwest and down-dip. These areas remain open to the northwest, up-dip and down-dip and will require additional drilling to evaluate their potential for future resource additions. Surface expansion drilling also tested the Isabel SE and Laura vein targets, located immediately southwest of the principal underground Arista mine area. Cross Section B–B′ – Central Arista Vein System and Isabel SE and Laura Targets – Selected 2026 Drill Holes To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/1060/309847_c9c3524b44e4f934_005full.jpg Notes: Selected 2026 drill holes are highlighted in black. Other 2026 drill holes through July 31, 2026 are shown in grey. Existing underground mine development is shown in brown for reference. Hole No. 526010 – Viridiana: 5.59 meters ETW grading 0.49 g/t Au, 442 g/t Ag and 6.80 g/t AuEq, including 1.78 meters ETW grading 0.51 g/t Au, 1,309 g/t Ag and 19.19 g/t AuEq. Hole No. 526031 – Viridiana: 4.19 meters ETW grading 0.33 g/t Au, 662 g/t Ag and 9.77 g/t AuEq, including 2.07 meters ETW grading 0.21 g/t Au, 1,134 g/t Ag and 16.40 g/t AuEq. Hole No. 126007 – Isabel SE: 0.57 meters ETW grading 6.54 g/t Au, 136 g/t Ag and 8.48 g/t AuEq. Alta Gracia Mine – Mirador and Independencia Vein Systems Exploration drilling at the Alta Gracia Mine recommenced in mid-November 2025 with surface drilling targeting the southwest extension of the Mirador vein system toward the Independencia system. From the restart of drilling through July 31, 2026, the Company completed a total of 6,101 meters of surface and underground drilling in 29 holes at Alta Gracia. The program has progressed from surface expansion drilling to underground infill and expansion drilling with a primary focus on the Independencia, Independencia West and related vein structures. Mining at Alta Gracia restarted on February 20, 2026. The ongoing exploration drilling program has continued to improve the geological understanding of the mineralized vein systems. Drilling has returned significant silver-gold intercepts from the Mirador West, Independencia West and Independencia South RM1 veins, supporting current mine planning and identifying areas for additional follow-up drilling and potential future resource additions. More recently, exploration drilling has begun evaluating additional targets, including the San Juan vein set immediately southeast of the Independencia vein system. Alta Gracia mineralization is predominantly silver-bearing with subordinate gold and generally contains lower base-metal concentrations than the polymetallic vein systems at the Arista Mine. Alta Gracia Mine Plan View – 2025-2026 Drill Holes Through July 31, 2026 To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/1060/309847_c9c3524b44e4f934_006full.jpg Notes: Selected 2025-2026 drill holes are highlighted in black. All other 2025-2026 drill holes through July 31, 2026 are shown in blue. Existing underground mine development is shown in grey for reference. Cross Section A–A′ – Independencia Vein System, San Juan and Victoria Veins – Selected 2026 Drill Holes To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/1060/309847_c9c3524b44e4f934_007full.jpg Notes: Selected 2026 drill holes are highlighted in black. Other 2026 drill holes through July 31, 2026 are shown in grey. Existing underground mine development is shown in brown for reference. Hole No. 426001 – Mirador West: 2.08 meters ETW grading 0.40 g/t Au, 363 g/t Ag and 5.59 g/t AuEq, including 1.00 meter ETW grading 0.74 g/t Au, 697 g/t Ag and 10.69 g/t AuEq. Hole No. 426014 – Independencia South RM1: 2.11 meters ETW grading 0.42 g/t Au, 271 g/t Ag and 4.28 g/t AuEq, including 0.70 meters ETW grading 0.69 g/t Au, 530 g/t Ag and 8.26 g/t AuEq. Independencia W1: 2.55 meters ETW grading 1.66 g/t Au, 1,695 g/t Ag and 25.85 g/t AuEq, including 0.95 meters ETW grading 3.00 g/t Au, 3,460 g/t Ag and 52.38 g/t AuEq. Hole No. 426017 – Independencia South RM1: 3.26 meters ETW grading 3.34 g/t Au, 1,079 g/t Ag and 18.75 g/t AuEq, including 0.73 meters ETW grading 8.49 g/t Au, 2,820 g/t Ag and 48.74 g/t AuEq. Independencia W1: 2.33 meters ETW grading 0.63 g/t Au, 171 g/t Ag and 3.08 g/t AuEq, including 0.39 meters ETW grading 0.84 g/t Au, 361 g/t Ag and 5.99 g/t AuEq. Quality Assurance, Quality Control and Data Verification All drill core samples reported in this release were collected under the supervision of qualified geological personnel at the Don David operations. Drill core was logged, photographed, marked for sampling and typically halved using a diamond saw. Sample security and chain-of-custody procedures were maintained from the drill site through delivery to the analytical laboratory. The quality assurance and quality control program included the regular insertion of certified reference materials, blanks and duplicate samples. All selected results presented in Table 1 and throughout this release are based on analyses performed by ALS Global (Vancouver, BC, Canada), an independent laboratory accredited to ISO/IEC 17025:2017. Assays from the DDGM lab are used for operational/check purposes only. The Company maintains a rigorous QA/QC program, including the insertion of certified reference materials, blanks, and duplicates, to monitor assay accuracy and precision across both laboratories. Samples were prepared at ALS Global in Hermosillo, Mexico and analyzed at ALS Global in Vancouver, Canada, an independent laboratory accredited to ISO/IEC 17025:2017 and ISO 9001:2015, and at the Company-operated DDGM mine laboratory in Oaxaca, Mexico. The DDGM mine laboratory is not independent of the Company and is not ISO accredited. All selected results in this release are based on ALS results. Duplicate samples analyzed at the DDGM mine laboratory were used to compare results with those returned by ALS. No material discrepancies were identified in the results disclosed in this release. At ALS, gold was analyzed using a 30-gram fire assay with an atomic absorption spectroscopy finish. Silver was analyzed using aqua regia digestion of 0.5 g sample followed by an ICP-AES finish. Any sample exceeding 100 ppm silver was reanalyzed using an aqua regia digestion on a 0.4 g sample, followed by an ICP-AES finish. Any samples exceeding 1,500 ppm silver were reanalyzed using a 30 g fire assay with a gravimetric finish. Copper, lead, and zinc were analyzed using aqua regia digestion of a 0.5 g sample followed by an ICP-AES finish. Any sample with copper, lead, or zinc concentrations exceeding 10,000 ppm was reanalyzed using ore-grade methods. The DDGM mine laboratory uses fire-assay and multi-element digestion methods for gold, silver and base metal analysis under established internal QA/QC protocols, and its results are routinely cross-validated against those from ALS Global. The Qualified Person verified the data disclosed in this release through review of original assay certificates, drill logs, collar and downhole survey information, sampling records, QA/QC results and the drill-hole database. Selected composite intervals, Estimated True Width calculations and AuEq grades were also independently checked against the underlying analytical and geological data. No material limitations or issues affecting the reliability of the disclosed results were identified. Qualified Person The scientific and technical information contained in this news release was prepared under the supervision of and has been reviewed and approved by David R. Turner, B.Sc., MAIG, Director of Geology of Goldgroup Mining Inc., a Qualified Person as defined by National Instrument 43-101. David R. Turner is an employee of the Company and is not independent of the Company. About Goldgroup Mining Inc. Goldgroup is a Canadian-based precious metals company focused on building a premier intermediate gold and silver producer through disciplined operations, organic growth and strategic acquisitions. The Company owns producing mines and development-stage assets in Mexico, together with the Back Forty Project in Michigan, providing multiple opportunities for resource growth, production expansion and long-term value creation. The Company's portfolio includes the producing Don David Gold Mine in Oaxaca, the Cerro Prieto Gold Mine and the San Francisco Project in Sonora, Mexico, together with the Back Forty Project in Michigan. Goldgroup is led by an experienced team with extensive expertise in mine development, operations, exploration and corporate finance throughout the Americas. For additional information, please visit www.goldgroupmining.com. On behalf of the Board of Directors "Javier Reyes" Javier Reyes, Chairman and Interim CEO For more information: +1 (604) 306-6867410 – 1111 Melville St.Vancouver, BC, V6E 3V6 [email protected] Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this press release. Cautionary Notes Regarding Forward-Looking Information Certain information contained in this news release may be considered "forward-looking information" within the meaning of applicable Canadian securities law and "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements relate to analyses and other information that are based on forecasts of future results, as well as estimates and assumptions of management. These forward-looking statements reflect Goldgroup's current internal projections, expectations or beliefs and are based on information currently available to Goldgroup. In some cases, forward-looking information can be identified by terminology such as "may," "will," "should," "expect," "intend," "plan," "anticipate," "believe," "estimate," "projects," "potential," "scheduled," "forecast," "budget" or the negative of those terms or other comparable terminology. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Forward-looking information in this news release includes, but is not limited to, statements regarding the potential for ongoing infill and expansion drilling to support production replacement and near-term mine planning; the potential for continued exploration and drilling to extend mine life and support future mineral resource growth; the continuity and extension of mineralized vein systems at the Arista and Alta Gracia mines; the potential for areas identified through drilling to contribute to future mineral resource additions; planned follow-up, infill and expansion drilling; the continued evaluation and advancement of exploration targets; and the potential significance of mineralized structures and extensions that remain open for further exploration. Forward-looking information is based on a number of assumptions that management believes are reasonable as of the date of this news release, including assumptions regarding the accuracy and reliability of assay, survey and geological data; the interpretation and continuity of mineralized structures; Estimated True Width calculations; the availability of drill rigs, personnel, underground access and other required infrastructure; the availability of sufficient funding to carry out planned exploration activities; prevailing metal prices and other assumptions used in calculating AuEq values; and the ability of the Company to continue its exploration and mining activities as currently contemplated. Forward-looking information is subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual events or results to materially differ from those reflected in the forward-looking information. Such risks include, without limitation, the possibility that additional drilling will not confirm the interpreted continuity, grade or width of mineralized structures; that mineralized extensions or exploration targets will not result in the definition or addition of mineral resources or mineral reserves or an extension of mine life; changes in metal prices, recoveries, operating costs or other economic assumptions; delays or interruptions related to drilling, underground access, equipment, personnel, permitting or operations; geological and technical uncertainties inherent in mineral exploration and resource estimation; and regulatory, environmental, community, political, financing and other risks associated with mineral exploration and mining. Additional risk factors and uncertainties include the risk factors disclosed in Goldgroup's annual information form dated June 10, 2026 and other continuous disclosure materials available under the Company's profile on SEDAR+ at www.sedarplus.ca. Any and all of the forward-looking information contained in this news release is qualified by these cautionary statements. Although Goldgroup believes that the forward-looking information contained in this news release is based on reasonable assumptions, readers cannot be assured that actual results will be consistent with such statements. Accordingly, readers are cautioned against placing undue reliance on forward-looking information. Goldgroup expressly disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, events or otherwise, except as may be required by, and in accordance with, applicable securities laws. To view the source version of this press release, please visit https://www.newsfilecorp.com/release/309847

Vancouver, British Columbia--(Newsfile Corp. - July 2, 2026) - Goldgroup Mining Inc. (TSXV: GGA) (OTCQX: GGAZF) (FSE: 55G0) ("Goldgroup" or the "Company") is pleased to announce the approval by shareholders of the Company of the Arrangement (as defined below) with Gold Resource Corporation and other matters at the Company's Annual General and Special Meeting of Shareholders ("Meeting") held on Thursday, July 2, 2026. A total of 280,061,700 common shares were voted at the Meeting, representing 92.88% of the votes attached to all outstanding common shares as of the record date of May 29, 2026 with over 99.99% of the votes cast at the meeting in favor of all motions presented to shareholders as outlined below. All matters presented at the Meeting and set out in the Company's management information circular dated May 29, 2026 (the "Information Circular") were approved, including: (i) the plan of arrangement and merger (the "Arrangement") under Division 5 of Part 9 of the Business Corporations Act (British Columbia) involving the Company, the Company's wholly-owned subsidiary, Goldgroup Merger Sub Inc., and Gold Resource Corporation; (ii) the adoption of new Articles for the Company (the "New Articles"); (iii) the Company's Omnibus Equity Incentive Plan; (iv) the appointment of Davidson & Company LLP as the auditors of the Company and to authorize the directors to fix the auditors' remuneration; and (v) the election of the Company's directors, all as more particularly set out in the Information Circular. The Company is also pleased to report that Gold Resource Corporation (NYSE American: GORO) announced at their Special Meeting of Shareholders held today that the Arrangement was approved by a majority of Gold Resource's shareholders. Subject to obtaining all required approvals and the satisfaction or waiver of all required closing conditions, the Arrangement is expected to close on or about July 17, 2026. A copy of the New Articles has been filed under the Company's SEDAR+ profile on www.sedarplus.ca. Additional information concerning the Arrangement is available in the Information Circular and the Company's news releases dated May 15, 2026 and January 26, 2026. About Goldgroup Goldgroup is a Canadian-based mining Company with two high-growth gold assets in Mexico. In addition to the San Francisco gold project, the Company has a 100% interest in the producing Cerro Prieto heap leach gold mine located in the State of Sonora. The Company recently announced a proposed business combination with Gold Resource Corporation, which holds a 100% interest in the producing Don David gold mine in Oaxaca, Mexico, as well as the Back Forty gold/silver development project in Michigan, USA. Goldgroup is led by a team of highly successful and seasoned individuals with extensive expertise in mine development, corporate finance, and exploration in Mexico. For further information on Goldgroup, please visit www.goldgroupmining.com. On behalf of the Board of Directors "Ralph Shearing" Ralph Shearing, CEO For more information: +1 (604) 306-6867410 - 1111 Melville St.Vancouver, BC, V6E [email protected] Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this press release. CAUTIONARY NOTES REGARDING FORWARD-LOOKING INFORMATION Certain information contained in this news release may be considered "forward-looking information" (within the meaning of applicable Canadian securities law) and "forward-looking statements" (within the meaning of the United States Private Securities Litigation Reform Act of 1995). Forward-looking statements relate to analyses and other information that are based on forecasts of future results, as well as estimates and assumptions of management. These statements include, without limitation, statements relating to the anticipated closing date of the Arrangement. These forward-looking statements reflect Goldgroup's current internal projections, expectations or beliefs and are based on information currently available to Goldgroup. In some cases, forward-looking information can be identified by terminology such as "may", "will", "should", "expect", "intend", "plan", "anticipate", "believe", "estimate", "projects", "potential", "scheduled", "forecast", "budget" or the negative of those terms or other comparable terminology. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Forward-looking information is subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual events or results to materially differ from those reflected in the forward-looking information, and are developed based on assumptions about such risks, uncertainties and other factors, including, without limitation: receipt of all required regulatory approvals in connection with the Arrangement, including the TSXV; that the conditions precedent to the completion of the Arrangement, including but not limited to TSXV and regulatory approvals, might not be satisfied in a timely manner or at all; and the risk factors disclosed in the Information Circular, Goldgroup's annual information form dated June 10, 2026 and other continuous disclosure materials available under the Company's profile on SEDAR+ at www.sedarplus.ca. Any and all of the forward-looking information contained in this news release is qualified by these cautionary statements. Although Goldgroup believes that the forward-looking information contained in this news release is based on reasonable assumptions, readers cannot be assured that actual results will be consistent with such statements. Accordingly, readers are cautioned against placing undue reliance on forward-looking information. Goldgroup expressly disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, events or otherwise, except as may be required by, and in accordance with, applicable securities laws. To view the source version of this press release, please visit https://www.newsfilecorp.com/release/303859

This article first appeared on GuruFocus. Release Date: May 12, 2026 For the complete transcript of the earnings call, please refer to the full earnings call transcript. The Three Sisters vein system is showing promising results with attractive grades and wide veins suitable for selective mining. Engagement with Comminvi Servisos as an experienced contractor is expected to accelerate development and production from the Three Sisters vein system. Transitioning to a cut and fill mining method is reducing dilution from 40% to 17%, leading to lower mining and milling costs. The addition of a third dry stack filter press will expand processing capacity, eliminating bottlenecks and improving metal recovery. Changes in reagents and process flow have already improved metal recovery and payability, with further enhancements expected. The transition to new mining methods and equipment is ongoing and will take time to fully implement. Current equipment is old and requires substantial maintenance, reducing availability and efficiency. The company is facing constraints in processing throughput due to limitations of existing filters. The approach to upgrading the fleet is gradual, which may delay immediate improvements in operational efficiency. The overall turnaround strategy will take time to show significant results, indicating potential short-term challenges. Warning! GuruFocus has detected 2 Warning Signs with GORO. Is GORO fairly valued? Test your thesis with our free DCF calculator. Q: Can you provide an update on the development of the Three Sisters vein system? A: The Three Sisters remains a focus, with mineralization showing attractive grades and wide veins for selective mining. We've engaged Comminvi Servisos to accelerate development and production. By year-end, we expect 50% of our production to come from this area, significantly impacting profitability. (Unidentified_1) Q: What changes have been made to the mining methods at the Don David Mine? A: We are transitioning from long-hole mining to cut and fill methods due to narrower vein widths. This change reduces dilution from 40% to 17%, lowering mining and milling costs while maintaining metal recovery. (Unidentified_1) Q: How is the company addressing equipment needs for the mine? A: We are acquiring used equipment to replace our aging fleet, focusing on smaller, readily available units that align with our new mining methods. This approach is deliberate, considering long lead times for new equipment. (Unidentified_1) Q: What steps are being taken to improve processing capacity and metal recovery? A: We've ordered a third dry stack filter press to eliminate bottlenecks and maintain a constant feed rate, crucial for good metal recovery. Additionally, changes in reagents have improved metal recovery and payability. (Unidentified_1) Q: Are there any questions from the participants? A: There were no questions during the call. The explanations were concise, and participants are encouraged to reach out for any follow-up questions. (Unidentified_2) For the complete transcript of the earnings call, please refer to the full earnings call transcript.

Our analysts just identified a stock with the potential to be the next Nvidia. Tell us how you invest and we'll show you why it's our #1 pick. Tap here. Achieved positive net income for the first time since 2021, driven by improved operational stability and favorable commodity price tailwinds. Successfully transitioned 70% of production at Don David mine to cut-and-fill mining, reducing dilution from 45% to approximately 12% to deliver higher head grades. Reopened the Alta Gracia mine to contribute high-grade silver ore, targeting a production increase from 1,500 to 5,000 tonnes per month by year-end. Strengthened the balance sheet to $31 million in cash with zero debt, providing the financial flexibility required for upcoming development projects. Attributed the Q1 rise in All-In Sustaining Costs (AISC) to 14 days of lost production from a union blockade and proactive safety-related ground support maintenance. Modernized the mining fleet with smaller, properly sized equipment to optimize the narrow-vein cut-and-fill method over legacy long-hole mining. Anticipate a pro forma production run rate exceeding 100,000 gold equivalent ounces within 12 months following the Gold Group Mining merger. Plan to complete a definitive feasibility study for the Back Forty project in Q1 2027, followed immediately by permit applications and construction. Targeting the restart of the San Francisco mine in early Q1 2027 after completing confirmatory drilling and infrastructure refurbishment. Executing an aggressive 70,000-meter drilling program in 2026, including 50,000 meters for exploration and 20,000 meters for definition drilling. Expect to install a third filter press in Q3 to provide redundancy and maintain steady 1,500 tonnes per day throughput at the tailings plant. Recorded two minor lost-time injury incidents, prompting the implementation of an immediate containment and prevention plan with external consultants. Navigated a 9-day work stoppage in January caused by an internal dispute between two union factions, which did not involve grievances against the company. Addressed regional security concerns in Sonora, Mexico, by highlighting the acquired Gold Group team's established social licenses and local expertise. The proposed reverse triangular merger with Gold Group aims to reduce single-asset dependency and attract a broader institutional investor base. One stock. Nvidia-level potential. 30M+ investors trust Moby to find it first. Get the pick. Tap here. Management confirmed that the shift to cut-and-fill mining will continue to deliver higher head grades by significantly reducing waste rock dilution. The 70,000-meter drilling target is corporate-wide, with specific allocations for Cerro Prieto, San Francisco, and Don David exploration. The Q1 AISC spike was temporary, caused by two weeks of lost production and heavy front-loaded investment in reopening the Alta Gracia mine. Management expects AISC to trend toward industry standards as heap leach operations like San Francisco come online, which have lower cost profiles than underground mines. Management acknowledged the concerns but noted that Sonora is a long-standing mining hub where established relationships have prevented operational disruptions. The merger adds a 'hidden asset' in the form of a Mexican management team with deep experience in maintaining social licenses across all local stakeholders.

DENVER, May 07, 2026--(BUSINESS WIRE)--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. "We are pleased to report another strong quarter and returning the Company to positive net income, with $40.2 million in working capital and $31.0 million in cash and cash equivalents as of March 31, 2026," said Allen Palmiere, President and CEO. "We continued to make meaningful progress in strengthening operational performance at Don David while advancing the proposed transaction with Goldgroup Mining Inc., which we expect to close in the third quarter. Our ongoing exploration programs continue to expand resources in the area surrounding the mine and the definition drilling has been improving our margins. As we work through the transaction, our team continues to focus on disciplined execution, safety, cost and grade control, and the delivery of returns for our shareholders." Don David Operational Highlights for the Quarter In the first quarter of 2026, DDGM, located in Mexico, produced and sold a total of 8,749 AuEq ounces, comprised of 1,548 gold ounces and 374,232 silver ounces, at an average realized sales price per ounce of $5,098 and $98.09, respectively. The 74,444 total tonnes milled was 31% higher than in the same period in 2025. Metal production for gold and silver increased by 126% and 54%, respectively. Copper, lead, and zinc production also increased by 39%, 36%, and 64%, respectively. During the first quarter of 2026, underground grade-control, infill, and selective expansion drilling continued to focus on near-term production targets at Arista and at the Alta Gracia project. At Arista, drilling supported production planning and refinement of the geologic model for veins within the Arista system, including the Viridiana, Gisela, Candelaria, Marena North and Splay 31 veins, as well as the Sandy and Sadie veins of the Three Sisters system. Limited surface expansion drilling also commenced during the quarter, testing the Isabel SE target. At the Alta Gracia Project, surface and underground infill and expansion drilling advanced evaluation of the Mirador and Independencia vein systems. Merger Update On January 26, 2026, the Company announced that it entered into a definitive arrangement agreement and plan of merger (the "Arrangement Agreement") with Goldgroup Mining Inc. ("Goldgroup"), whereby Goldgroup agreed to acquire all of the issued and outstanding shares of the Company’s common stock (the "Transaction"). Pursuant to the Arrangement Agreement, the Company’s stockholders will receive 1.4476 common shares of Goldgroup for each share of the Company’s common stock (as adjusted by a share consolidation to be completed by Goldgroup prior to closing). The Transaction is expected to close in the third quarter of 2026, subject to customary closing conditions (including approval by the stockholders of each of the Company and Goldgroup). The parties received unconditional approval from the Mexican National Antitrust Commission in respect of the Transaction on April 27, 2026. First Quarter 2026 Conference Call The Company will host a conference call on Tuesday, May 12, 2026, at 10:00 a.m. Eastern Time. The conference call will be recorded and posted to the Company’s website later in the day following the conclusion of the call. Following prepared remarks, Allen Palmiere, President and Chief Executive Officer, Armando Alexandri, Chief Operating Officer, and Chet Holyoak, Chief Financial Officer, will host a live question and answer (Q&A) session. There are two ways to join the conference call. To join the conference via webcast, please click on the following link: https://onlinexperiences.com/Launch/QReg/ShowUUID=9408713A-18B6-4113-B697-6504F8C08A29 To join the call via telephone, please use the following dial-in details: Please connect to the conference call at least 10 minutes prior to the start time using one of the connection options listed above. About GRC: Gold Resource Corporation is a gold and silver producer, developer, and explorer with its operations centered on the Don David Gold Mine in Oaxaca, Mexico. Under the direction of an experienced board and senior leadership team, the Company’s focus is to unlock the significant upside potential of its existing infrastructure and large land position surrounding the mine in Oaxaca, Mexico and to develop the Back Forty Project in Michigan, USA. For more information, please visit the Company’s website, located at www.goldresourcecorp.com. Forward-Looking Statements: This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking words such as "plan," "target," "anticipate," "believe," "estimate," "intend" and "expect" and similar expressions are intended to identify such forward-looking statements. Such forward-looking statements include, without limitation, the anticipated closing timeline for the Transaction. All forward-looking statements in this press release are based upon information available to the Company as of the date of this press release, and the Company assumes no obligation to update any such forward-looking statements. Forward-looking statements involve a number of risks and uncertainties, and there can be no assurance that such statements will prove to be accurate. The Company’s actual results could differ materially from those discussed in this press release. Forward-looking statements are subject to risks and uncertainties. Additional risks related to the Company may be found in the periodic and current reports filed with the Securities and Exchange Commission (the "SEC") by the Company, including the Company’s Annual Report on Form 10-K for the year ended December 31, 2025, as amended (the "2025 Annual Report"), which are available on the SEC’s website at https://www.sec.gov. IMPORTANT INFORMATION FOR INVESTORS AND STOCKHOLDERS This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. Any securities issued in the Transaction are anticipated to be issued in reliance upon available exemptions from registration requirements pursuant to Section 3(a)(10) of the Securities Act and applicable exemptions under state securities laws. Promptly after filing its definitive proxy statement with the SEC, the Company will send the definitive proxy statement to each stockholder of the Company entitled to vote at the meeting of stockholders relating to the Transaction and the transactions contemplated in connection therewith. This communication is not a substitute for the proxy statement or for any other document that the Company may file with the SEC and send to the Company’s stockholders in connection with the potential transaction. INVESTORS AND SECURITY HOLDERS OF THE COMPANY ARE URGED TO READ THE PROXY STATEMENT AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. Investors and security holders will be able to obtain free copies of the proxy statement (when available) and other documents filed with the SEC by the Company through the website maintained by the SEC at http://www.sec.gov. The Company and certain of its respective directors, executive officers and other members of management and employees may be considered participants in the solicitation of proxies with respect to the potential Transaction under the rules of the SEC. Information about the directors and executive officers of the Company is set forth in the 2025 Annual Report. These documents can be obtained free of charge from the sources indicated above. Additional information regarding the interests of such participants in the solicitation of proxies in respect of the potential transaction will be included in the registration statement and proxy statement and other relevant materials to be filed with the SEC when they become available. Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accept responsibility for the adequacy or accuracy of this release. View source version on businesswire.com: https://www.businesswire.com/news/home/20260507762629/en/ Contacts Chet Holyoak Chief Financial Officer [email protected] www.GoldResourceCorp.com 303-320-7708

DENVER, March 18, 2026--(BUSINESS WIRE)--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. "We are pleased to report a successful operational turnaround during 2025 that culminated in a strong fourth quarter finish and over $25 million in cash and equivalents on the balance sheet," said Allen Palmiere, President and CEO. "Obviously, favorable metal prices were a meaningful contribution which realized an average of $55 per ounce for silver and $4,234 per ounce for gold metal sales. Production from our Three Sisters zone made a significant contribution, as expected, and as a result we anticipate that silver will represent approximately 40% of our output from this zone in 2026 and enhance our leverage to the silver market. Our operations team in Mexico has executed exceptionally well on our 2025 objectives, delivering solid year end results, positioning us for continued momentum in the year ahead." Don David Gold Mine: Production substantially improved, as the Company began receiving newly acquired equipment at the end of the third quarter. The additional equipment, combined with the strategic use of third-party contractors, enabled an increase in available headings to mine and a subsequent improvement in production. DDGM produced and sold a total of 23,125 gold equivalent ounces, comprising of 4,944 gold ounces and 1,461,898 silver ounces, sold at an average price per ounce of $3,657 and $45.48, respectively. DDGM total cash costs after co-product credits per gold equivalent ("AuEq")1 ounce sold and DDGM all-in sustaining cost per AuEq ounce sold for the year were $2,205 and $2,807, respectively. See Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Non-GAAP Measures for a reconciliation of non-GAAP measures to applicable GAAP measures. DDGM received the Mexican Empresa Socialmente Responsable ("ESR") award in 2025 for the eleventh consecutive year. During 2025, the Company’s exploration program focused on underground grade-control and infill drilling in support of near-term production, primarily at the Three Sisters and Arista vein systems. At Three Sisters, drilling targeted the Sandy and Sadie vein sets to refine and validate the geologic model for production planning. Additional definition drilling was completed on multiple veins within the Arista system, including Splay 31, Candelaria, Marena, Santa Helena, Viridiana, and Marena North, as well as the Soledad South vein in the Switchback vein system. Exploration-related underground development advanced throughout the year, positioning the Company to continue expansion drilling in early 2026. In addition, limited surface infill drilling also commenced at the Alta Gracia project in the fourth quarter, focusing on the Mirador vein system. Corporate and Financial: The Company closed the year with a $25.0 million cash and cash equivalents balance at December 31, 2025. The increase of $23.4 million from December 31, 2024 is the result of the Company’s focus on improving its cash position, mostly through the issuance of debt and equity in 2025, as well as improved production and higher metal prices. The Company raised $2.5 million through a registered direct offering in January 2025. In September 2025, the Company closed on a second registered direct offering of $11.4 million for the sale of 25,315,954 shares of the Company’s common stock at a price of $0.45 per share. The Company issued 14,204,846 of these shares, for the fair value of approximately $6.4 million, to fully pay off the term loan received in June 2025, as a non-cash equity settlement. The Company raised $8.6 million through its At-The-Market Offering Program (the "ATM Program"), after deducting the agent’s commissions and other expenses. In February 2025, the Company sold its interest in Green Light Metals for $0.9 million in proceeds. On May 7, 2025, the Company received a tax refund of 79.6 million pesos (approximately $4.0 million) related to DDGM taxes paid in 2023. Working capital at December 31, 2025, was $32.0 million, a 1,424% increase from the December 31, 2024 working capital of $2.1 million. The increase is primarily driven by the increase in cash and cash equivalents. 2025 Sustaining and Growth Investments Summary Trending Highlights Year-End 2025 Conference Call The Company has elected not to hold a conference call at this time. A conference call will be scheduled in the near future to present operational results. About GRC: Gold Resource Corporation is a gold and silver producer, developer, and explorer with its operations centered on the Don David Gold Mine in Oaxaca, Mexico. Under the direction of an experienced board and senior leadership team, the Company’s focus is to unlock the significant upside potential of its existing infrastructure and large land position surrounding the mine in Oaxaca, Mexico and to develop the Back Forty Project in Michigan, USA. For more information, please visit the Company’s website, located at www.goldresourcecorp.com. Forward-Looking Statements: This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking words such as "plan," "target," "anticipate," "believe," "estimate," "intend" and "expect" and similar expressions are intended to identify such forward-looking statements. Such forward-looking statements include, without limitation, (i) the Company’s expectations regarding productivity, cash flow and operating income; (ii) Company’s anticipated near-term capital needs and potential sources of capital; and (iii) the Company’s ability to achieve production targets. All forward-looking statements in this press release are based upon information available to the Company as of the date of this press release, and the Company assumes no obligation to update any such forward-looking statements. Forward-looking statements involve a number of risks and uncertainties, and there can be no assurance that such statements will prove to be accurate. The Company’s actual results could differ materially from those discussed in this press release. Forward-looking statements are subject to risks and uncertainties. Additional risks related to the Company may be found in the periodic and current reports filed with the Securities and Exchange Commission by the Company, including the Company’s Annual Report on Form 10-K for the year ended December 31, 2025, which are available on the SEC’s website at www.sec.gov. View source version on businesswire.com: https://www.businesswire.com/news/home/20260318278370/en/ Contacts For further information, please contact: Chet Holyoak Chief Financial Officer [email protected] www.GoldResourceCorp.com 303-320-7708

DENVER, January 20, 2026--(BUSINESS WIRE)--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. "We are extremely pleased to report a such strong finish to 2025, reflecting the successful turnaround in operations and increasing ore production from the new Three Sisters area where higher grades and improved production, combined with record high metal prices," said Allen Palmiere, President and CEO. "During the quarter, we realized an average sale price of $55 per ounce of silver and $4,234 per ounce for gold. In 2026, we expect continued leverage to the silver price with 40% of our production from the Three Sisters area. Overall, we are pleased with the mine’s performance, which reflects the execution of the operational plans and new equipment we outlined a year ago. I would like to thank the entire team for their focus and execution in delivering these outstanding operational results." Sales Statistics Trending Production Statistics About GRC: Gold Resource Corporation is a gold and silver producer, developer, and explorer with its operations centered on the Don David Gold Mine in Oaxaca, Mexico. Under the direction of an experienced board and senior leadership team, the Company’s focus is to unlock the significant upside potential of its existing infrastructure and large land position surrounding the mine in Oaxaca, Mexico and to develop the Back Forty Project in Michigan, USA. For more information, please visit the Company’s website, located at www.goldresourcecorp.com. Forward-Looking Statements: This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking words such as "plan," "target," "anticipate," "believe," "estimate," "intend" and "expect" and similar expressions are intended to identify such forward-looking statements. Such forward-looking statements include, without limitation, (i) the preliminary fourth quarter production results and cash balance and (ii) the Company’s production expectations for 2026. All forward-looking statements in this press release are based upon information available to the Company as of the date of this press release, and the Company assumes no obligation to update any such forward-looking statements. Forward-looking statements involve a number of risks and uncertainties such as commodity price volatility, operating risks, risks related to political, regulatory and labor matters, market trends and conditions and other factors discussed in the Company’s periodic reports filed with the Securities and Exchange Commission (the "SEC"), and there can be no assurance that such statements will prove to be accurate. The Company’s actual results could differ materially from those discussed in this press release. Forward-looking statements are subject to risks and uncertainties. Additional risks related to the Company may be found in the periodic and current reports filed with the SEC by the Company, including the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, which are available on the SEC’s website at www.sec.gov. View source version on businesswire.com: https://www.businesswire.com/news/home/20260120016792/en/ Contacts Chet Holyoak Chief Financial Officer [email protected] www.GoldResourceCorp.com