Goldmining renews Colider exploration claim

Mr. Alastair Still reports GOLDMINING EXPANDS PORTFOLIO OF ACTIVE EXPLORATION ASSETS IN BRAZIL, NEW 'COLIDER' EXPLORATION CONCESSION GRANTED IN MATO GROSSO STATE The Brazilian National Mining Agency (Agencia Nacional de Mineracao) (ANM) has granted a renewal of exploration claim 866032/2008, also known as the Colider project, to Goldmining Inc., effective Oct. 30, 2025. The renewal is valid for three years, during which time the company shall prepare and present a final exploration report. The project consists of a single 10,000-hectare (100-square-kilometre) exploration claim that was obtained by a wholly owned subsidiary of the company in 2011 and is a component of the portfolio of exploration properties owned by the company in Brazil. The company had originally applied for a renewal of the exploration claim in 2013, and after an initial denial and appeal in the same year, followed by an extended appeal period, the claim has been restored to active exploration status. The Colider project is located in Mato Grosso state, the third-largest state in Brazil, located in the central west of Brazil. The capital, Cuiaba, is a travel hub that dates back to the 18th century gold rush. The Colider project is part of the Alta Floresta gold belt, an area known for extensive alluvial gold mining, particularly in the 1980s, extending for approximately 500 kilometres along trend. In addition to the Colider project, Goldmining also owns the Batistao gold project located 55 km to the northeast of the Colider project, which is composed of one property located 25 km southwest of the city of Peixoto de Azevedo and consists of one exploration permit totalling 5,107 hectares. The Colider project area was initially explored by Western Mining Corp. in the 1990s, which completed a systematic exploration work program, including geological mapping, geophysical surveys (magnetics and induced polarization), stream sediment and soil sampling, and auger and reverse circulation drilling. The company is currently compiling, validating and interpreting the historic exploration results. A total of 29 RC holes (for 1,847 metres) are reported to have been drilled on the property, for which the company is currently validating and conducting basic quality assurance including collating and checking original assay certificates. Systematic grid soil sampling was historically completed over approximately 13 per cent of the concession, demonstrating elevated gold plus or minus copper in soils associated with a large discrete magnetic high anomaly in the centre of the concession. Historic exploration also reported surface rock grab exhibiting gossan and sulphide mineralization overprinting granitoid intrusive rocks, and also select assay values of up to 11.2 grams per tonne gold along with anomalous copper, lead, molybdenum and zinc. The company initially plans to conduct systematic compilation of the historic data sets and exploration activities including initial ground truthing fieldwork. Alastair Still, chief executive officer of Goldmining, commented: "We're pleased to have added the Colider concession to our Brazil exploration portfolio of highly prospective gold (plus or minus copper) projects. Colider lies within the emerging and underexplored Alta Floresta gold belt in Mato Grosso state, and our initial analysis of the historic data sets suggests that Colider is highly prospective for bedrock gold and copper mineralization. Colider provides additional optionality in an already extensive portfolio of prospective properties in central Brazil, and we look forward to the compilation and validation of historic exploration results, followed by planning for the first stages of systematic exploration data sets across the property." About Goldmining Inc. Goldmining is a public mineral exploration company focused on acquiring and developing gold assets in the Americas. Through its disciplined acquisition strategy, Goldmining now controls a diversified portfolio of resource-stage gold and gold-copper projects in Canada, the United States, Brazil, Colombia and Peru. The company also owns approximately 21.5 million shares of Gold Royalty Corp., 9.9 million shares of U.S. Goldmining Inc. and 19.1 million shares of Nevgold Corp. Qualified person Paulo Pereira, PGeo, president of Goldmining, has supervised the preparation of, verified and approved all scientific and technical information in this news release. Mr. Pereira is also a qualified person as defined in National Instrument 43-101 (Standards of Disclosure for Mineral Projects). Notice to readers The scientific and technical information herein has been prepared by the company in accordance with National Instrument 43-101. NI 43-101 is a rule of the Canadian Securities Administrators, which establishes standards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. These standards differ from the requirements of the U.S. Securities and Exchange Commission, and the scientific and technical information contained in this news release may not be comparable with similar information disclosed by domestic U.S. companies subject to the SEC's reporting and disclosure requirements. We seek Safe Harbor.