Silver Hammer and Stroud Resources Announce Updated Mineral Resource Estimate for the Santo Domingo Silver-Gold Project, Mexico

Silver Hammer Mining Corp. (CSE: HAMR) (OTCID: HAMRF) (the " Company " or " Silver Hammer ") and Stroud Resources Ltd. (TSXV: SDR) ("Stroud") are pleased to announce an updated mineral resource estimate (" MRE ") for the Santo Domingo Silver-Gold Project (the " Project ") located in Jalisco State, Mexico. This MRE replaces Stroud's 2017 mineral resource estimate ( see Silver Hammer news release July 20, 2026). A technical report prepared in accordance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects (" NI 43-101 ") has been filed on SEDAR+ concurrently with the information circulars of Silver Hammer and Stroud relating to the proposed amalgamations (the " Amalgamations ") between Silver Hammer, Stroud and SilverMark Resources Inc. (" SilverMark "). The information circulars of Silver Hammer and Stroud relating to the Amalgamations have been filed and are available under each company's profile on SEDAR+ at www.sedarplus.ca . The meetings of Silver Hammer shareholders and Stroud shareholders to consider and vote on the Amalgamations, as applicable, are each scheduled to be held on September 28, 2026. Shareholders of Silver Hammer and Stroud are encouraged to read the applicable information circular carefully and in its entirety. See "Meeting Details" below for additional information regarding the meetings. Key Highlights: The following is a summary of the MRE with more detailed information provided in Table 1: Total Measured and Indicated mineral resources of 5.7 Mt at an average grade of 79 g/t Ag and 0.42 g/t Au, containing 14.3 Moz Ag and 76 koz Au, or collectively 20 Moz of silver equivalent (" AgEq ") (1) . Total Inferred mineral resources of 3.9 Mt at an average grade of 66 g/t Ag and 0.31 g/t Au, containing 8.3 Moz Ag and 36 koz Au, or collectively 11 Moz AgEq (1) . Expected silver recoveries up to 86% and gold recoveries up to 95%. MRE prepared by independent Qualified Person, Mr. Simon Mortimer (FAIG #7795) of Atticus Geoscience Consulting Ltd. (1) Silver equivalent: AgEq (ppm) = Ag (ppm) + Au (ppm) x 68.85 ( see footnote and notes to Table 1) Dr. Scott Jobin-Bevans, Stroud Resources' Interim CEO since July 2019, commented, "This updated Mineral Resource Estimate represents an important step forward for the Santo Domingo Project. While the application of a more rigorous and contemporary geological and resource modeling methodology has resulted in a reduction in the reported contained ounces compared to the 2017 MRE, we believe the resulting resource is significantly more robust, transparent and representative of the current geological understanding of the deposit. Importantly, this work provides Silver Hammer with a much stronger technical foundation from which to evaluate the economic potential of Santo Domingo and advance the project toward a Preliminary Economic Assessment. We believe this updated resource will give shareholders and the market greater confidence in the quality of the mineralization and provide a clear roadmap for the next phase of exploration and development." Mineral Resource Statement The MRE, constrained by underground mining parameters ( see Notes to Table 1), is reported using a break-even underground mining net smelter return (" NSR ") cut-off of US$90.0/t (Table 1). Table 1. Mineral Resource Statement, Santo Domingo Ag-Au Project, Mexico (effective August 21, 2026). Category Tonnes Grade Contained Metal Ag (ppm) Au (ppm) *AgEq (ppm) NSR (US$/t) Ag (koz) Au (koz) *AgEq (koz) Guadalupe Vein Indicated 740,000 63 0.20 77 139 1,500 5 1,800 Inferred 1,500,000 61 0.24 78 141 2,900 11 3,700 La Raya Vein Measured 1,200,000 97 0.51 132 240 3,730 19 5,040 Indicated 3,700,000 76 0.43 106 192 9,100 51 13,000 Measured + Indicated 4,920,000 81 0.45 112 203 12,800 71 18,000 Inferred 2,000,000 69 0.35 93 169 4,400 23 6,000 Zopilote Vein Inferred 460,000 68 0.36 92 168 1,000 2 1,100 Total Resources (3...