Goldgroup Highlights Its Two Producing Mines and Significant Growth Potential Across the Don David Gold Complex in Mexico

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Last Updated: Sep 10 24, 2026

Publisher: Relqo Media LLC (Wyoming, United States)

Subject Company: Goldgroup Mining Inc (GORO)

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18. IMPORTANT INFORMATION

Qualified Person and Technical Reports

The scientific and technical information contained in this communication has been reviewed and approved by Christopher Richings, Professional Engineer, member of the Professional Engineers of Ontario and Engineers and Geoscientists British Columbia and Goldgroup's Vice President Technical Services, a Qualified Person as defined by National Instrument 43-101 ("NI 43-101"). Mr. Richings is an employee of the Company and is not independent of the Company.

This communication contains information and extracts from (i) the technical report titled "NI 43-101 Technical Report on the Don David Gold Mine, Oaxaca, Mexico" with an effective date of December 31, 2025 and a report date of March 30, 2026 (the "Don David Technical Report"), (ii) the technical report titled "Cerro Prieto Project, Heap Leach Project, Magdalena de Kino, State of Sonora, Mexico" with an effective date of April 4, 2025 (the "Cerro Prieto Technical Report"), (iii) the 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 report date of May 1, 2026 (the "San Francisco Technical Report"), and (iv) the technical report titled "NI 43-101 Preliminary Economic Assessment on the Back Forty Mine Project, Michigan, USA" with an effective date of September 30, 2023 and a report date of November 15, 2023 (the "Back Forty Technical Report", and together with the Don David Technical Report, the Cerro Prieto Technical Report and the San Francisco Technical Report, the "Technical Reports").

All of the technical reports have been filed on SEDAR+ and readers are encouraged to read each of the Technical Reports in their entirety, including all qualifications, assumptions, exclusions and risk factors that relate to the Mineral Resources, Mineral Reserves and the PEA for the relevant project. Each of the Technical Reports is intended to be read as a whole, and sections should not be read or relied upon out of context.

The Mineral Resource estimate for San Francisco has an effective date of April 30, 2026. For additional information regarding the Mineral Resource estimate, including the key assumptions, parameters and methods used, please refer to the San Francisco Technical Report.

The Mineral Resource estimate for Don David and the PEA for the Back Forty project have an effective date of September 30, 2023. For additional information regarding the PEA and the Mineral Resource estimate, including the key assumptions, parameters and methods used, please refer to the Back Forty Technical Report.

The PEA is preliminary in nature and includes Inferred Mineral Resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as Mineral Reserves. There is no certainty that the results assumptions or conclusions of the PEA will be realized.

Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. The estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, socio-political, marketing or other relevant issues.

Forward-Looking Information

Certain information contained in this communication constitutes "forward-looking information" within the meaning of applicable Canadian securities laws and "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995 (collectively, "forward-looking information"). Forward-looking information relates to future events or future performance and reflects management's current expectations, estimates, projections and assumptions. All statements, other than statements of historical fact, are forward-looking information.

Forward-looking information in this communication includes, without limitation, statements regarding: the Company's strategic objectives and growth plans; the anticipated benefits of the merger with Gold Resource; future production levels, operating performance and cash flow generation; potential increases in production; opportunities to improve mining performance and reduce dilution; exploration, resource expansion and mine-life extension opportunities at Don David, Cerro Prieto, San Francisco and other properties; the potential restart, timing, economics, viability and production profile of the San Francisco project; future drilling, mine-planning, technical studies and development activities; the advancement, permitting, financing, development and construction of the Back Forty project; the potential realization of the results of the PEA; future capital allocation and growth opportunities; the impact of commodity prices on the Company's operations and projects; the future significance, value and development potential of Mineral Resources; the Company's ability to build toward becoming an intermediate producer; future shareholder value creation; future investor interest; and potential market recognition or re-rating of the Company's shares.

In certain cases, forward-looking information can be identified by the use of words such as "believes", "expects", "plans", "anticipates", "intends", "estimates", "targets", "forecasts", "outlook", "guidance", "goal", "projects", "potential", "could", "may", "might", "will", "would", "should" and similar expressions or the negative of such expressions.

Forward-looking information is based on a number of assumptions that management believes are reasonable as of the date hereof, including, among others: the accuracy of Mineral Resource and other technical estimates; anticipated exploration, development, operating and economic results; the continuation of existing mining, processing and exploration activities; reasonable commodity price and foreign exchange assumptions; the availability of financing, labour, equipment, infrastructure and supplies on acceptable terms; the timely receipt of necessary permits, approvals and authorizations; successful integration and management of acquired assets; and the Company's ability to execute its business and operational plans.

Forward-looking information is subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual results, performance or achievements to differ materially from those expressed or implied by such forward-looking information. These risks and uncertainties include, without limitation: fluctuations in gold, silver, copper, lead and zinc prices; changes in foreign exchange rates; inflationary pressures and increased operating and capital costs; exploration, development and mining risks; uncertainty in Mineral Resource estimates and the ability to convert Mineral Resources into Mineral Reserves; geological, geotechnical, hydrological, metallurgical and operational risks; uncertainty regarding drilling, engineering, metallurgical testing and economic study results; risks associated with the restart of the San Francisco project, including the possibility that a restart may not occur or may not occur within expected timeframes or on anticipated terms; risks that anticipated operating improvements, production increases or cost reductions may not be achieved or may not have the expected impact; permitting, environmental, reclamation, community relations, title, regulatory and legal risks; labour shortages and workforce disruptions; supply-chain interruptions; financing risks; risks associated with the advancement of the Back Forty project, including development, permitting, financing and construction risks; the risk that the assumptions, estimates or conclusions contained in the PEA may not be realized; risks associated with integrating and realizing benefits from the merger with Gold Resource; political, economic and security risks in the jurisdictions in which the Company operates; and the other risks disclosed in the Company's public filings, including its annual information form dated June 10, 2026 available under the Company's profile on SEDAR+.

Statements regarding future production growth, future operating performance, potential project restarts, project economics, future cash flow, development opportunities, future shareholder value, investor interest, market recognition or any potential re-rating of the Company's shares are inherently uncertain and involve numerous assumptions, risks and uncertainties. There can be no assurance that any such outcomes will occur.

References in this communication to commodity-price forecasts, analyst expectations or potential impacts of higher commodity prices are provided solely for contextual purposes. Commodity-price forecasts are inherently uncertain, and there can be no assurance that future commodity prices will reach or maintain any forecast levels or that changes in commodity prices will have the anticipated effect on the Company's operations, projects or financial performance.

Although Goldgroup believes that the forward-looking information contained herein is based on reasonable assumptions, readers should not place undue reliance on such information as actual results may differ materially from those expressed or implied therein. Forward-looking information is made as of the date hereof and Goldgroup undertakes no obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by applicable law.

Investors should review Goldgroup's public disclosure and the Technical Reports in their entirety before making any investment decision.

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