Mr. Nick Appleyard reports

TRISTAR GOLD ANNOUNCES COMMENCEMENT OF CIVIL PUBLIC ACTION REGARDING ENVIRONMENTAL LICENCE FOR CASTELO DO SONHOS PROJECT

Tristar Gold Inc. has been advised that on July 30, 2025, the Federal Prosecutor's Office (MPF) of Brazil filed a Civil Public Action before the Federal Court of Para against the State Environmental Secretariat of Para (SEMAS/PA) and Mineracao Castelo dos Sonhos S.A. (MCDS), the wholly owned Brazilian subsidiary of the company which holds the Castelo do Sonhos project. The lawsuit seeks the suspension of the environmental licensing process for the Castelo de Sonhos project until the environmental impact studies in respect of the project are revised, an indigenous component study is conducted, and a free, prior and informed consultation (FPIC) process is carried out with indigenous communities from the Bau and Menkragnoti territories. The MPF sought an immediate injunction suspending the environmental licence, however the federal judge hearing the injunction application noted that the MPF's investigations have been continuing since 2019, and found that there was no urgency to the injunction application, and therefore deferred the analysis of the injunction request until after SEMAS/PA and MCDS have filed their defences and the National Indigenous Foundation has submitted its clarifications. The federal judge also acknowledged the potential socioeconomic impacts of a suspension at this stage and emphasized the need to ensure due process, including the right to an effective defence. MCDS and SEMAS have 15 business days to file a defense against the injunction application, following which the judge will decide on the appropriate path forward.

Nick Appleyard, Tristar's president and chief executive officer, stated, "Tristar remains confident that, upon submission of its defence, it will demonstrate that there are no irregularities in the environmental licensing process of the Castelo de Sonhos project, which is in alignment with SEMAS/PA's position."

About Tristar Gold Inc.

Tristar Gold is an exploration and development company focused on precious metals properties in the Americas that have the potential to become significant producing mines. The company's current flagship property is Castelo de Sonhos in Para state, Brazil. The company's shares trade on the TSX Venture Exchange under the symbol TSG and on the OTCQB under the symbol TSGZF.

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