Sirios Resources Inc. (TSX-V: SOI) (OTCQB: SIREF) (FSE: 377A) announces the appointment of Daniel Deschênes, Eng., MBA, as Vice President, Projects. With extensive experience in project development and mining operations in Québec and internationally, Mr. Deschênes will lead the execution of the Cheechoo Preliminary Economic Assessment and oversee the next stages of its development.

Mr. Deschênes is a mining engineer with more than 15 years of experience in the development and operation of both open-pit and underground mines in Québec, Ontario, Africa and South America. He has held senior management positions with companies such as Newmont, IAMGOLD, Nemaska Lithium and Windsor Salt, where he led multidisciplinary teams and contributed to the engineering, construction and commissioning of mining projects. He also has extensive knowledge of the Eeyou Istchee James Bay region, having worked at the Éléonore mine and, more recently, as Infrastructure Director at Nemaska Lithium’s Whabouchi mine.

Mr. Deschênes holds degrees in the medical field, as well as a Bachelor’s degree in Mining and Metallurgical Engineering and an MBA in Strategic Project Management from Université Laval. He is a member of the Ordre des Ingénieurs du Québec.

“With his extensive experience in mining project development, Daniel will strengthen our ability to advance Cheechoo in a rigorous and responsible manner. His expertise will be particularly valuable as we move toward the Preliminary Economic Assessment and the next stages of development,” said Jean-Félix Lepage, Chief Executive Officer of Sirios.

Sirios to Participate in Conferences in Q3 and Q4 2026

As part of its ongoing commitment to enhancing its market visibility and shareholder engagement, Sirios will participate in the following conferences:

• Nordic Funds & Mines, October 15-16, Stockholm, Sweden
• Xplor, November 2-5, Montréal, Canada
• Budapest Commodity Summit, November 15-16, Budapest, Hungary
• Québec Mines + Energy, November 17-19, Québec City, Canada
• Swiss Mining Institute, November 18-19, Zurich, Switzerland
• Northern Miner Symposium, November 29-30, London, United Kingdom
• Resourcing Tomorrow, December 1-3, London, United Kingdom

About Sirios

Sirios Resources is a Quebec-based mineral exploration company focused on developing its Cheechoo gold deposit, as well as exploring and advancing its other high-potential gold projects in the Eeyou Istchee James Bay region of Canada. On December 11, 2025, Sirios announced the details of the acquisition of OVI Mining, a milestone in the company’s history.