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Sirios Resources Inc. is a Canadian company primarily engaged in the exploration and assessment of mineral resources, with a particular focus on discovering gold and silver deposits. Its most significant asset is the Cheechoo gold project, situated in Quebec. This project covers an area of 118 square kilometers, distributed across 225 individual claims within three distinct, non-adjacent blocks. Established in 1994, the company maintains its corporate headquarters in Montreal, Canada.

More than 13,000m of drilling and 33 holes completed since the start of summer 2026 drilling Montreal, Quebec--(Newsfile Corp. - August 20, 2026) - Sirios Resources Inc. (TSXV: SOI) (OTCQB: SIREF) (FSE: 377A) ("Sirios" or "the Company") announces the assay results of the first 5 holes totaling 1,753 m of Phase 1 drilling at its Cheechoo gold project, located in the Eeyou Istchee Baie-James region of Quebec, Canada. Highlights from these first results include: 2.40 g/t Au over 48.5 m, including 77.65 g/t Au over 1.1 m (CH26-326) 1.49 g/t Au over 37.6 m (CH26-326) 1.16 g/t Au over 32.2 m, including 12.88 g/t Au over 1.5 m (CH26-327) 2.28 g/t Au over 10.3 m, including 10.39 g/t Au over 1.5 m (CH26-327) 0.77 g/t Au over 10.3 m (CH26-300E) Visible Gold in 8 Drill Holes Visible gold has been observed in several locations in 8 drill holes, including drill hole CH26-326, and 7 others for which assay results are pending.

Montréal, Québec--(Newsfile Corp. - 9 juin 2026) - Ressources Sirios Inc. (TSXV: SOI) (OTCQB: SIREF) (« Sirios » ou

Execution of the first 25,000-metre drilling phase at Cheechoo begins with the mobilization of two drill rigs Montreal, Quebec--(Newsfile Corp. - June 9, 2026) - Sirios Resources Inc. (TSXV: SOI) (OTCQB: SIREF) ("Sirios" or "the Company") announces that it has received all required permits, including the Authorization for Impact-Causing Exploration Work (ATI), for the execution of Phase 1 of the drilling campaign at Cheechoo, as announced in a press release dated April 1. In addition, the Company has mobilized the first two drill rigs to the project site.

Montreal, Quebec--(Newsfile Corp. - May 12, 2026) - Sirios Resources Inc. (TSXV: SOI) (OTCQB: SIREF) ("Sirios" or "the Company") announces an additional capital injection, which provides it with greater financial flexibility to carry out its exploration and investment programs. Since the update on January 15, 2026, the exercise of 28,439,748 warrants and 2,100,000 options has added $3,472,730 to Sirios's cash balance and resulted in the issuance of 30,539,748 shares.

Montréal, Québec--(Newsfile Corp. - 12 mai 2026) - Ressources Sirios Inc. (TSXV: SOI) (OTCQB: SIREF) (« Sirios » ou « la Société ») annonce un