Ressources Sirios Inc. (TSXV: SOI) (OTCQB: SIREF) (FSE: 377A) has announced the start of a 1,800-metre diamond drilling program at its Aquilon gold project in the Eeyou Istchee Baie-James region of Quebec. The program aims to confirm the lateral and depth continuity of a large near-surface gold halo discovered during 2025 drilling, which extends more than 700 metres north-to-south and 300 metres in width. The joint venture is majority-funded by Sumitomo Metal Mining Canada, with Sirios directing operations — a structure that investors may note limits Sirios's direct capital exposure to the program.

Key Points

  • Ressources Sirios Inc. (TSXV: SOI) (OTCQB: SIREF) (FSE: 377A)
  • A 1,800-metre helicopter-supported diamond drilling program has commenced at the Aquilon gold project in Quebec
  • The program covers three new drill holes plus two extensions; the 2025 halo returned intervals up to 298.2 metres grading 0.26 g/t Au; Sumitomo funds 51% and Sirios funds 49%
  • Investors may be watching for assay results from the current program confirming the extent of the 2025 gold halo discovery

Aquilon 2026 Drill Program Targets Extent of 2025 Near-Surface Gold Halo

The 2026 program consists of three new drill holes and two extensions of existing holes, all conducted using a helicopter-supported drill rig. The primary objective, as stated in the release, is to confirm the lateral and depth continuity of the substantial near-surface gold halo identified during the 2025 campaign. That halo extends over 700 metres from south to north and 300 metres in width, with an eastward dip according to the company's geological and structural interpretation of the zone. The 2025 program returned drill intervals of up to 298.2 metres grading 0.26 g/t Au, as previously reported on 10 February 2026.

Aquilon Joint Venture Structure and Proximity to High-Grade Lingo Zone

Aquilon is operated as a joint venture in which Sumitomo Metal Mining Canada holds a 51% interest and Sirios holds a 49% interest, with Sirios directing the program. The project covers 140 exclusive exploration rights totalling 68 km², located 10 kilometres south of the Laforge-1 hydroelectric generating station and accessible year-round by all-season roads. The 2026 discovery halo sits less than 2 kilometres southwest of the high-grade Lingo zone and 3 kilometres from the Moman zone — areas the company notes have historically produced some of Quebec's highest-grade drill intercepts.

Historic High-Grade Results Underpin Aquilon's Exploration Profile

The Aquilon project has recorded 32 gold showings to date. Among the project's historical highlights cited in the release are 12,906.5 g/t Au over 0.2 metres at the Lingo showing, 3,527.4 g/t Au over 0.4 metres at the Moman showing, and 133.67 g/t Au over 0.8 metres at the Fleur-de-Lys showing, as previously disclosed in press releases dated 26 June 2008 and 19 January 2011. Scientific and technical content in the announcement was reviewed and approved by Roger Moar, P.Geo., a qualified person under National Instrument 43-101.