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Sirios intersects 26.8 g/t Au over 6.8 m on Cheechoo

Drill Results

TSX-V: SOI August 08, 2018

Sirios intersects 26.8 g/t Au over 6.8 m on Cheechoo

MONTREAL, QUEBEC- Management of SIRIOS (TSX-V: SOI) is pleased to announce assays

results from the extension of two drill holes on the Cheechoo gold property. The extension of drill

hole #125 (125E) intersected a zone of veining and quartz-feldspar breccias, which assayed 26.8

g/t Au over 6.8 m , including an interval of 69.8 g/t Au over 2.5 m. This intersection results in a

40-meter extension below the vein of drill hole #112, which assayed 41.0 g/t Au over 8.0 m (press

release of February 14, 2018). It is oriented north- northwest, sub- vertically dipping, which is

consistent with the structural data obtained from the borehole logging survey in drill hole #112.

The true width of the intersection is estimated at 3.6 metres. Drill hole #125E was completed to a

depth of 451 m in auriferous tonalite material.

SIGNIFICANT ASSAY RESULTS OF DRILL HOLE CH-18-125E

(Extension of drill hole #125 from 352 m to 451 m)

From To Width* Au

(g/t)

Au (g/t)

**

367.3 368.4 1.1 11.5

390.5 436.4 45.9 0.6

incl. 414.3 415.1 0.8 10.8

436.4 443.2 6.8 26.8 9.4

incl. 440.7 443.2 2.5 69.8 25.3

incl. 441.5 442.3 0.8 201.5

442.3 451 7.8 0.6

*Interval along the hole, True width unknown

**Grade cut at 50 g/t m

The extension of drill hole #20 (20E) intersected two decimetric veins (quartz-feldspar) up-dip and

similar to drill hole #112. Although, they did not yield significant gold grades, the mineralized

zone remains open in all directions.

Results of 20 additional drill holes recently received are currently being interpreted and results

will be released shortly. Assay results of the remaining 28 drill holes, out of 58 completed in

2018 for a total of 15,720 metres, are still pending. A table of collar coordinates is available at the

following link:

http://www.sirios.com/bd-coordinates-drilled-20180808/

Sirios’s 100% owned Cheechoo property is located at Eeyou Istchee James Bay, Quebec,

approximately 800 km north of Montreal, 200 km east of W emindji 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 as say 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., a nd 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.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the

TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release

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For more information, contact:

Dominique Doucet, Eng., President, CEO [email protected]

Nicole Gauthier, Exploration Manager, [email protected]

Tel.: (514) 510-7961