Mr. Jean-Felix Lepage reports

SIRIOS STRENGTHENS ITS TEAM WITH THE APPOINTMENT OF A VICE PRESIDENT, PROJECTS

Sirios Resources Inc. has appointed Daniel Deschenes, Eng, MBA, as vice-president, projects. With extensive experience in project development and mining operations in Quebec and internationally, Mr. Deschenes will lead the execution of the Cheechoo preliminary economic assessment (PEA) and oversee the next stages of its development.

Mr. Deschenes is a mining engineer with more than 15 years of experience in the development and operation of both open-pit and underground mines in Quebec, 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 Eleonore mine and, more recently, as infrastructure director at Nemaska Lithium's Whabouchi mine.

Mr. Deschenes 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 Universite Laval. He is a member of the Ordre des Ingenieurs du Quebec.

"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-Felix 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, Oct. 15 to Oct. 16, Stockholm, Sweden;
• Xplor, Nov. 2 to Nov. 5, Montreal, Canada;
• Budapest Commodity Summit, Nov. 15 to Nov. 16, Budapest, Hungary;
• Quebec Mines + Energy, Nov. 17 to Nov. 19, Quebec City, Canada;
• Swiss Mining Institute, Nov. 18 to Nov. 19, Zurich, Switzerland;
• Northern Miner Symposium, Nov. 29 to Nov. 30, London, United Kingdom;
• Resourcing Tomorrow, Dec. 1 to Dec. 3, London, U.K.

All details regarding these events are available on the Sirios website. To request an invitation, please e-mail info@sirios.com.

About Sirios Resources Inc.

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 Dec. 11, 2025, Sirios announced the details of the acquisition of OVI Mining, a milestone in the company's history.

We seek Safe Harbor.