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Sirios Announces Initial Summer 2021 Cheechoo Drill Results and Provides an Operations Update

Drill Results Mine Development & Operations

TSX-V : SOI December 14, 2021

Sirios Announces Initial Summer 2021 Cheechoo Drill Results

and Provides an Operations Update

Montreal, Quebec - The management of Sirios Resources Inc. (TSXV: SOI) is pleased to

announce assay results of the first ten drill holes, totaling 1,888 metres, of the drilling campaign

completed last September on the Cheechoo gold project at Eeyou Istchee James Bay, Quebec

(see figure #1).

Significant drill results are listed below including the following highlights:

 4.90 g/t Au over 22.0 m, including 71.69 g/t Au over 1.0 m (CH21-RC-02)

 2.36 g/t Au over 22.5 m, including 16.06 g/t Au over 2.5 m (CH21-274)

 0.68 g/t Au over 6.5 m, new zone outside the Cheechoo deposit (CH21-269)

In addition to these results, holes CH21-RC-01, RC-02 and -271 to -274 confirmed the continuity

of gold mineralization along the east-northeast edge of the Cheechoo tonalite, at the contact with

the meta-sediments. This data will be useful in the upcoming resource estimate for the Cheechoo

project that is scheduled for 2022 . This updated resource estimate is expected to include the

conversion of a significant amount of Inferred resources to Indicated resources.

Hole CH21-268 demonstrated the presence of gold mineralization to a depth of over 700 metres

along the tonalite/meta -sediment contact, highlighting the potential to expand the deposit at

depth.

Drill hole CH21-269, which ended in gold mineralization, allows to connect, both laterally and at

depth, intercepts previously found in holes -129 and -67. Thus, identifying a new gold bearing

zone in a new geological setting (i.e., mineralization hosted within the meta-sediments), located

outside the limits of the currently defined Cheechoo deposit (s ee Figure #2). This area will

require follow-up in the next drilling program.

Dominique Doucet, President and CEO of Sirios, stated, "I am very pleased with this first batch

of drill results, which let us progress positively toward our goal of an updated mineral resources

estimate."

Figure 1: Location map of drill holes CH21-RC-01, RC-02, 268 to 274 (plan view).

Figure 2: New gold zone in meta-sediments (vertical section striking across interpreted direction of the zone).

SIGNIFICANT DRILL RESULTS FROM THE 10 HOLES RELEASED

Drill Hole CH21- From

(m)

To

(m)

Length*

(m) Au (g/t)

RC-01** 48,0 57,0 9,0 1,50

72,0 76,0 4,0 2,73

RC-02**

91,0 113,0 22,0 4,90

incl. 105,0 113,0 8,0 11,45

incl. 105,0 106,0 1,0 71,69

268

277,9 287,5 9,6 0,69

314,1 333,1 19,0 0,32

381,8 397,7 15,9 1,00

451,8 481,5 29,7 0,30

584,5 587,5 3,0 3,35

640,0 661,5 21,5 0,62

669,0 691,2 22,2 0,63

694,9 710,9 16,0 0,41

269

New Zone

97,0 98,5 1,5 13,36

113,5 120,0 6,5 0,68

271 6,0 29,7 23,7 0,59

272

8,0 11,0 3,0 1,94

21,0 35,5 14,5 0,76

57,5 73,5 16,0 0,64

121,5 130,0 8,5 0,64

273 40,0 80,0 40,0 0,47

274

3,4 6,5 3,1 2,37

86,1 112,0 25,9 0,71

125,4 145,8 20,4 0,67

149,3 161,3 12,0 0,73

165,5 188,0 22,5 2,36

incl. 173,4 175,9 2,5 16,06

* Length of core along hole (not equivalent to true width).

Intervals greater than 0.25 g/t Au with a maximum of 3 consecutive metres of waste rock.

** RC: reverse circulation drilling.

No significant results were obtained from holes #270 (drilled east of the Cheechoo deposit) and

#276 (drilled more than 2.5 km north of the deposit).

A table of drill collar coordinates is available at the following link: www.sirios.com/bd-

coordinates-drilled-20211214.

Update on the progress of the work

The 2021 summer drill program included 34 NQ -size holes, for a total of 6,836 metres. Assay

results for the remaining 24 holes are still pending. Once these results are received (Q2 2022), an

update to the mineral resource estimate will be initiated . The primary objective of this new

mineral resource est imate will be to convert Inferred resources into Indicated resources . This

resource conversion would significantly increase the value of the Cheechoo deposit by increasing

the confidence level in the resource definition. Th e upcoming mineral resource estim ate will

form the basis for a Preliminary Economic Assessment (PEA) of the deposit.

Concurrently, 1-kg re-assays of drill core samples continue to be done in order to properly assess

the grade of the Cheechoo deposit with greater precision (see August 26, 2021 press release ).

More than a thousand samples are currently being analyzed as part of this program.

Furthermore, Groupe Hémisphères, environmental consultants based out of Quebec City , are in

the process of completing an Environmental Baseline Stud y to support the project development

in compliance with the most stringent regulatory requirements.

All of this work is part of the transition that the Cheechoo Project is undergoing, with the focus

moving the project from exploration to development stage.

Assay Quality Control

All NQ drill core are logged by Sirios personnel at the Cheechoo exploration camp. The drill

core is then sent to Rouyn -Noranda to be sawed in half, with one half sent to a commercial

laboratory for assaying and other half kept for future reference. A stri ct QA/QC program is in

place by integrating blanks and certified reference standards to the core sample sequence. The

samples are assayed for gold by fire assay with an atomic absorption finish by Actlabs. Samples

assaying greater than 0.2 g/t Au as well as drill core samples with visible gold are assayed by fire

assay with metallic sieve on a 1 -kg sample. Special certified reference standards (Assay Pills)

were used to ensure adequate quality control of gold assays on 1-kg of material.

Samples from the reverse circulation (RC) drill holes were collected and bagged at an interval of

one sample per metre along the hole by Sirios geologists. A witness sample for each sample was

also collected and kept for future reference at the Cheechoo camp facilities. Sample preparation

and insertion of the blanks and certified reference material was carried out by Sirios ’ geologists

at the Cheechoo camp, prior to sending the sample batches to the Actlabs laboratory for the same

processing and analysis as the diamond drill core samples.

The scientific and technical content of this press release has been reviewed and approved by

Dominique Doucet, P.Eng. president and CEO of Sirios Resources Inc. and Jordi Tur cotte,

P.Geo. senior geologist, both qualified persons under National Instrument 43-101.

About the Cheechoo Property

The Cheechoo gold property, wholly -owned by Sirios, is located in Eeyou Istchee James Bay,

Quebec, less than 9 km from Newmont’s Eleonore gold mine. The latest resource estimate for

the Cheechoo project (October 2020) estimated an inferred resource of 2.0 million ounces of

gold contained in 93.0 million tonnes of rock at an average grade of 0.65 g/t Au, with significant

potential t o increase this resource (BBA, P -L. Richard, P. Geo.; J. Torrealba, P. Eng.; D.

Evangelista, P. Eng., NI 43 -101 Technical Report, Mineral Resource Estimate Update for The

Cheechoo Project, 31/10/2020).

About Sirios

A pioneer in the discovery of significant gold deposits in Eeyou Istchee James Bay, Quebec,

Canada, Sirios Resources Inc. is focusing primarily on its Cheechoo gold discovery , while

actively exploring the gold potential of its other properties.

Forward-Looking Statements:

This press release contains "forward -looking statements" within the meaning of applicable

Canadian securities laws based on expectations, estimates and projections as of the date of this

press release. Forward -looking statements involve ri sks, uncertainties and other factors that

could cause actual events, results, performance, expectations and opportunities to differ

materially from those expressed or implied by such forward -looking statements. Factors that

could cause actual results to di ffer materially from those indicated in such forward -looking

statements include, but are not limited to: capital and operating costs that differ materially from

estimates; the tentative nature of metallurgical test results; delays or failures in obtaining

required governmental, environmental or other approvals; uncertainties related to the availability

and cost of necessary financing in the future changes in financial markets; inflation; fluctuations

in metal prices; delays in project development; other ris ks relating to the mineral exploration and

development industry; and risks disclosed in public filings of the Company on SEDAR at www.

sedar.com. Although the Company believes that the assumptions and factors used in preparing

the forward-looking statements contained in this news release are reasonable, readers should not

place undue reliance on this information, which speaks only as of the date of this news release,

and there can be no assurance that such events will occur or occur within the time periods

presented. The Company disclaims any intention or obligation to update or revise any forward -

looking statements, whether as a result of new information, future events or otherwise, except as

required by applicable law.

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

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

Contact :

Dominique Doucet, President, CEO, Eng.

Tel. : (514) 918-2867

[email protected]

website : www.sirios.com