Minera Alamos Updates Resources and Reserves for the Pan Gold Mine in Nevada

About this update from Mining Americas Inc.

Continues Solid Legacy of Reserve Replacement Toronto, Ontario--(Newsfile Corp. - March 5, 2026) - Minera Alamos Inc. (TSXV: MAI) (OTCQX: MAIFF) (" Minera Alamos " or the " Company ") is pleased to announce updated Mineral Resource and Mineral Reserve (together, " MRMR ") estimates for its 100%-owned Pan gold mine (" Pan mine ") in White Pine County, Nevada. A technical report with an effective date of September 1, 2025 containing the MRMR estimates (" Technical Report "), prepared in accordance with National Instrument 43-101 (" NI 43-101 "), has been filed under the Company's profile on SEDAR+ and can also be found on the Company's website at www.mineraalamos.com . The Technical Report is titled: "NI 43-101 Technical Report on Resources and Reserves at Pan Gold Mine, White Pine County, Nevada" . Completing the Pan mine Technical Report at this time was as a regulatory requirement of the Company's October 1, 2025 acquisition of the Pan mine and Gold Rock project. All dollar amounts in this news release are expressed in U.S. dollars, unless otherwise noted. Metric tonnes are referred to as "t", imperial short tons as "st", and grams as "g". HIGHLIGHTS Darren Koningen, Minera Alamos' CEO, commented, "Since starting production in 2017, the Pan mine has reliably replaced reserves year after year for almost a decade, and we look forward to continuing that legacy. We are pleased with the new Mineral Reserve estimate replacing the past three years of mining depletion and we view this as a solid basis to drive gold production growth for the Company. The opportunity to develop the nearby Gold Rock deposit offers the potential to significantly extend the mine life at the Pan Operating Complex. In addition, with current gold prices significantly higher than the $2,600/oz price used as the basis for this updated Mineral Reserve estimate, there remain plenty of opportunities to further optimize the Pan LOM plan." Updated Mineral Resource and Mineral Reserve Estimates All Mineral Resources reported herein are within an optimized pit shell using $2,600/oz gold price and defined using blocks classified as Measured, Indicated, or Inferred. The Pan mine Mineral Resource estimate is reported in accordance with the CSA NI 43-101 rules for disclosure. The chosen reporting cut-off is 0.0029 oz/st Au (0.1 g/t Au). These numbers are reported inside the pit optimization and considered to have reasonable prospects for eventual economic extraction by open pit bulk mining methods. Table 1 - Pan mine Mineral Resource estimate, effective September 1, 2025   Notes to Mineral Resource estimate: Mineral Reserve estimation was performed using Hexagon's MinePlan software and applies to the full Pan mine Mineral Resource estimate. Detailed pit slope design, access, haulage, and operational cost criteria were applied in this process for all mining areas. The orientation, proximity to the topographic surface, and geological controls of the Pan mine mineralization support mining of the ore reserves with open pit mining techniques. To calculate the mineable reserves, pits were designed following an optimized Lerchs- Grossmann pit based on a $2,600/oz gold price. The quantities of material within the designed pits were calculated using a base cut-off of 0.0029 oz/st Au (0.1 g/t Au). The updated LOM plan which forms the basis of the updated Mineral Reserve estimate outlines mining and stacking onto the heap leach pad to continue for four years from 2026 to 2029, followed by residual leaching. Table 2 - Pan mine Mineral Reserve estimate, effective September 1, 2025     Notes to Mineral Reserve estimate: Future Optimization Work Completing the Pan mine Technical Report at this time was as a regulatory requirement of the Company's October 1, 2025 acquisition of the Pan mine and Gold Rock project. The 2026 MRMR estimates are considered as a baseline from which the Company can improve upon through various initiatives in the near-term and medium-term. This includes, but is not limited to: Qualified Person The scientific and technical information contained in this news release has been reviewed and approved by Mr. Darren Koningen, P.Eng., Minera Alamos’ CEO, who is the Company’s Qualified Person under National Instrument 43-101. The Pan mine Technical Report independent Qualified Persons (“ QP ”) include Scott Zelligan, P.Geo, Lawrence Segerstrom, M.Sc. (Geology), CPG, Louell Uy, P.Eng., and Garth Wilcox P.Eng., who have prepared the scientific and technical information in the Pan mine and reviewed the information that is summarized in this press release. The QP’s preparing the technical report have followed industry accepted practices for verifying that the data used in the report is suitable for the purposes used. A more detailed description of data verification undertaken by the qualified persons is included in the relevant sections of the technical report that has been filed. Cautionary Note to U.S. Investors Regarding Mineral Resources Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability, and U.S. investors are cautioned that terms such as "Measured," "Indicated" and "Inferred Mineral Resource" are recognized and required by Canadian regulations but may not be comparable to similar terms used in U.S. reporting standards. About Minera Alamos Minera Alamos is a growing North American gold production and development company with projects in Nevada, Arizona, and Mexico. The Company owns the Pan Operating Complex in White Pine County, Nevada, comprised of the producing Pan heap leach gold mine and the adjacent permitted Gold Rock project, as well as the nearby past-producing Illipah project. The Company also owns the Copperstone mine and associated infrastructure in La Paz County, Arizona, a permitted, advanced development gold project. The Company maintains a portfolio of high-quality Mexican assets, including the Cerro de Oro open pit gold project in northern Zacatecas which has considerable past drilling and metallurgical work completed and is currently being guided through the permitting process by the Company and its permitting consultants. Other Mexican projects owned by the Company include the Santana open-pit, heap-leach gold mine in Sonora and the PEA-stage, permitted La Fortuna open pit gold project in Durango. The Company's strategy is to become a leading, Americas-focused intermediate gold producer by growing production at its Pan Operating Complex and developing its pipeline of high-quality, low-capital projects while expanding gold resources across its portfolio. For Further Information Please Contact: Darren Blasutti, EVP Corporate Development 416-306-0990 ext 208 [email protected] David Stewart, VP Capital Markets & Strategy 647-294-8361 [email protected] Website: www.mineraalamos.com Caution Regarding Forward-Looking Statements This press release includes certain "forward-looking information" within the meaning of applicable Canadian securities legislation. All information herein, other than information of historical fact, constitutes forward-looking information. Forward-looking information is frequently, but not always, identified by words such as "expects", "anticipates", "believes", "intends", "estimates", "potential", "possible", and similar expressions, or statements that events, conditions, or results "will", "may", "could", or "should" occur or be achieved. This information is based on information currently available to Minera Alamos and Minera Alamos provides no assurance that actual results will meet management's expectations. The forward-looking information is based on assumptions and addresses future events and conditions that, by their very nature involve inherent risks and uncertainties. Actual results could differ materially from those currently anticipated in forward-looking information for many reasons. Minera Alamos' financial condition and prospects could differ materially from those currently anticipated in forward-looking information for many reasons such as: an inability to receive requisite permits for mine operation, exploration or expansion; an inability to finance and/or complete updated resource and reserve estimates and technical reports which support the technical and economic viability of mineral production; changes in general economic conditions and conditions in the financial markets; changes in demand and prices for minerals; litigation, legislative, environmental and other judicial, regulatory, political and competitive developments; technological and operational difficulties encountered in connection with Minera Alamos' activities; and other matters discussed in this press release and in filings made with securities regulators. This list is not exhaustive of the factors that may affect any of Minera Alamos' forward-looking information. These and other factors should be considered carefully, and readers should not place undue reliance on Minera Alamos' forward-looking information. Minera Alamos does not undertake to update any forward-looking information that may be made from time to time by Minera Alamos or on its behalf, except in accordance with applicable securities laws. NEITHER 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 RELEASE. To view the source version of this press release, please visit https://www.newsfilecorp.com/release/286322

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