The management of SIRIOS (TSX-V: SOI) is pleased to announce assay results for seven additional drill holes completed in 2018, located to the north-west of the main drilled area of the Cheechoo gold property.

Three holes (#152, 155 and 157), drilled across the NW-SE trending tonalite/meta-sediment contact, intersected gold mineralization similar to previously reported holes #117, 119, 121, 148, 150 (ref.: press releases June 6, 2018 and February 8, 2018). These holes distributed along the same contact, extend the known mineralized strike length for an additional 350 meters to the north-west of the November trench as shown on the map below. Three additional holes (#153, 156, 158) were drilled in the same area, within the tonalite intrusive and also crossing the contact at depth. Hole #156 intersected a zone of 0.6 g/t Au over 133.2 m, which is interpreted to be a NNW extension of similar intercepts in holes #106, 143 and 145. Hole #158, with an intercept of 1.0 g/t Au over 38.9 m, indicates that this zone is still open the north-west. In addition, hole #160, drilled approximately 200 meters west of these six holes, ended with a 1.5 m intercept of 7.8 g/t Au.

Significant results of the seven drill holes are listed in the table below.

Two figures accompanying this announcement are available at:

http://www.globenewswire.com/NewsRoom/AttachmentNg/4f44abcd-5e74-4c4b-acc8-7ce64cb18d54

http://www.globenewswire.com/NewsRoom/AttachmentNg/2dd26d3a-92f5-4117-b076-7ca84ed3068f

A table of collar coordinates is available at the following link:

http://www.sirios.com/bd-coordinates-drilled-20180815/

Sirios’ 100% owned Cheechoo property is located at Eeyou Istchee James Bay, Quebec, approximately 800 km north of Montreal, 200 km east of Wemindji and less than 10 km from Goldcorp’s Éléonore gold mine.

Assay quality control

All NQ drill core was described by Sirios personnel at the Cheechoo exploration camp. The drill core was then sent to Rouyn-Noranda to be sawed in half, with one half sent to a commercial laboratory for assaying and other half retained for future reference. A strict QA/QC program was followed by integrating blanks and certified reference standards to the core sample sequence. The samples were assayed for gold by fire assay with an atomic absorption finish by Actlabs in Ste-Germaine-Boulé. Samples assaying more than 2 g/t, as well as drill core samples with visible gold, were assayed by fire assay with metallic sieve based on a 1 kg sample.

Jordi Turcotte, MSc., Geo., and Nicole Gauthier, MSc., Geo, Qualified Persons pursuant to National Instrument 43-101, have prepared and verified the technical information of this press release, as well as reviewing the final text.