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Sirios Resources Unveils New Vision for Cheechoo Gold Project

Shareholder Letters & Outlook

Sirios Resources Unveils New Vision for

Cheechoo Gold Project

October 7, 2024

Montreal, QC – Sirios Resources Inc. (TSX-V: SOI; OTCQB: SIREF) (“Sirios” or the “Company”) is pleased to

unveil a new vision for its Cheechoo gold project, located in Québec’s Eeyou Istchee James Bay territory.

In the wake of the winter 2024 drilling program, Sirios embarked on a comprehensive management review

of data, spanning several months. This in-depth analysis , conducted in collaboration with specialized

geological and mining consultancy firms, including PLR Resources Inc., has yielded very promising

results. The thorough examination has led to the identification of multiple high-priority targets for

delineating high-grade zones that may lead to both open-pit and underground mining . Notably, the

near-surface Eclipse zone has emerged as a standout prospect, exhibiting remarkable high-grade

continuity across numerous drill holes (Figures 1 to 3). This strategic assessment has not only validated

the company's exploration e Ưorts but also opened up new avenues for future development at the

Cheechoo gold project.

Dominique Doucet, CEO of Sirios, comments: “We are thrilled to launch this new vision for the Project.

Cheechoo now presents dual potential: large-volume open-pit mining and/or high-grade underground

development. This new outlook is a game changer for the Project, consequently leading our team to design

an intensive drilling program targeting high-grade enriched zones. ”

Cheechoo’s High-Grade Zones

The Cheechoo tonalite intrusion forms the centerpiece of the property, characterized by multiple gold-

enriched zones encased in a lower-grade halo . In addition to the Eclipse zone, numerous high-grade

intervals throughout the deposit suggest the occurrence of additional high-grade zones. These zones

may be found both within and beyond the boundaries of the 2022 Mineral Resource Estimate (MRE)

conceptual pit (see Table 1).

Table 1: Selection of high-grade gold intercepts

Au (g/t) Length (m) From (m) To (m) Drill hole Zone

30.1 8.0 317.2 325.2 CH17-112 Outside*

30.4 7.1 130.5 137.6 CH16-052 Outside*

9.5 16.8 132.5 149.3 CH16-041 Outside*

21.5 7.0 74.0 81.0 CH16-035 Outside*

8.8 16.3 21.1 37.4 CH21-280 Outside*

31.3 4.6 162.3 166.9 CH21-295 Outside*

65.1 2.1 99.5 101.6 CH17-095 Eclipse Zone

9.7 14.0 125.0 139.0 CH17-112 Outside*

27.5 4.8 82.2 87.0 CH19-245 Outside*

41.3 3.1 17.5 20.6 CHRN17-213 Outside*

13.8 9.0 270.5 279.5 CH20-265 Outside*

15.8 7.4 110.0 117.4 CH21-285 Outside*

26.6 4.3 115.5 119.9 CH15-020 Outside*

55.7 2.0 64.0 66.0 CH19-202 Eclipse Zone

12.2 9.1 85.0 94.1 CH18-191 Outside*

21.2 5.2 562.5 567.7 CH17-108 Outside*

11.3 9.5 38.0 47.5 CH15-028 Outside*

22.7 4.6 213.9 218.5 CH20-266 Outside*

15.3 6.8 336.0 342.8 CH19-240 Outside*

12.9 8.0 294.0 302.0 CH17-132 Outside*

26.4 3.9 143.6 147.5 CH18-184 Outside*

28.4 3.6 62.5 66.1 CH16-086 Outside*

34.1 3.0 425.0 428.0 CH17-098 Outside*

50.5 2.0 77.5 79.5 CH19-201 Eclipse Zone

24.0 4.2 32.0 36.2 CH16-079 Outside*

10.0 9.9 57.6 67.5 CH18-182 Outside*

17.1 5.8 228.1 233.9 CH17-125 Outside*

7.0 13.8 19.1 32.9 CH21-279 Outside*

11.7 8.0 105.0 113.0 CHRC21-002 Outside*

37.3 2.5 440.7 443.2 CH18-125E Outside*

18.8 4.9 202.5 207.4 CH18-183 Outside*

24.0 3.8 152.0 155.8 CH17-134 Outside*

28.3 3.2 59.1 62.3 CH18-159 Outside*

18.9 4.6 59.5 64.1 CH15-020 Outside*

17.5 4.9 253.0 257.9 CH24-305 Eclipse Zone

5.2 16.2 174.9 191.1 CH15-024 Outside*

11.8 7.0 121.5 128.5 CH18-191 Outside*

34.2 2.4 90.0 92.4 CH18-163 Eclipse Zone

37.1 2.2 91.8 94.0 CH18-161 Eclipse Zone

16.2 5.0 280.5 285.5 CH20-258 Outside*

15.8 5.0 261.0 266.0 CH16-058E Outside*

9.6 8.2 221.3 229.5 CH17-139 Outside*

27.8 2.8 156.6 159.4 CH17-112 Outside*

17.0 4.5 25.8 30.3 CH19-199 Eclipse Zone

18.0 4.2 104.8 109.0 CH21-283 Outside*

18.8 4.0 117.5 121.5 CH16-088 Outside*

11.8 6.3 130.0 136.3 CH16-088 Outside*

13.1 5.5 96.1 101.6 CH18-176 Outside*

12.8 5.5 138.5 144.0 CH14-017 Outside*

5.0 14.1 322.6 336.7 CH18-181 Outside*

3.4 19.7 258.1 277.8 CH17-122 Outside*

30.1 2.2 125.8 128.0 CH17-124 Outside*

25.6 2.4 36.8 39.2 CH18-192 Outside*

13.1 4.6 107.3 111.9 CH16-065 Outside*

30.2 2.0 137.5 139.5 CH19-204 Eclipse Zone

15.1 4.0 325.0 329.0 CH17-111 Outside*

18.7 3.2 232.0 235.2 CH21-288 Outside*

14.7 3.9 55.0 58.9 CH15-026 Outside*

24.8 2.3 189.2 191.5 CH21-296 Outside*

18.9 3.0 123.0 126.0 CH18-196 Outside*

22.9 2.4 7.3 9.7 CH17-119 Outside*

14.7 3.7 137.0 140.7 CH17-128 Outside*

12.8 4.2 82.7 86.9 CH16-054 Outside*

21.3 2.5 323.0 325.5 CH17-109 Outside*

25.8 2.0 44.7 46.7 CH17-099 Eclipse Zone

9.0 5.6 213.5 219.0 CH13-010 Outside*

13.7 3.6 37.3 40.9 CH18-182 Outside*

10.6 4.5 214.0 218.5 CH17-128 Outside*

6.3 7.5 152.5 160.0 CH17-123 Outside*

7.8 6.0 134.5 140.5 CH17-098 Outside*

16.1 2.5 173.4 175.9 CH21-274 Outside*

7.7 4.7 278.1 282.8 CH17-108 Outside*

5.4 6.7 58.3 65.0 CH19-221 Outside*

7.1 5.0 111.0 116.0 CH15-024 Outside*

13.3 2.5 130.6 133.1 CH14-018 Outside*

7.1 4.4 305.6 310.0 CH17-111 Outside*

9.8 3.0 367.0 370.0 CH16-062 Outside*

11.0 2.6 25.5 28.1 CH17-112 Outside*

*High-grade gold intercepts located outside the Eclipse zone

Grade capped at 100 g/t Au. Lengths along drill hole.

Planned Drilling Program

Sirios' technical team is currently designing an intensive drilling program aimed at delineating high-grade

zones within the property. The company intends to disclose comprehensive details about this strategic

program in forthcoming press releases, o Ưering stakeholders valuable insights into Sirios' exploration

plans and objectives.

Mineral Resource Estimate (MRE) Update

Following this drilling program, Sirios will proceed with an update of the mineral resource estimate. This

update will serve as the basis for a future Preliminary Economic Assessment (PEA).

New Website

We are also proud to announce the launch of our redesigned and updated website. We invite you to visit

sirios.com to discover our revamped platform which o Ưers an enhanced user experience, featuring

our exclusive interactive 3D model viewer for the Cheechoo deposit.

A French version of the website will be available soon.

About the Cheechoo Property

Located less than 15 km from Newmont's Éléonore gold mine in the Eeyou Istchee James Bay territory of

Québec, the Cheechoo property, 100% owned by Sirios, contains an untapped gold deposit with

excellent expansion and development potential.

The most recent mineral resource estimate (MRE) reported, for an open-pit model, using a USD 1,650 gold

price:

 Indicated resources: 1.4 million ounces at an average grade of 0.94 g/t Au;

 Inferred resources: 500,000 ounces at an average grade of 0.73 g/t Au.

Source: BBA, Mineral Resource Estimate Update for the Cheechoo Project, 23/12/2022

Underground mining scenarios have not been evaluated in the 2022 MRE.

Learn more about Cheechoo at sirios.com/en/cheechoo

Analytical Protocols and Data Verification Procedures

Each sample in Sirios' Cheechoo database has undergone gold assaying at a certified laboratory and been

subjected to comprehensive quality assurance and quality control (QA/QC) procedures. These procedures

include the use of certified reference materials (CRMs), field and laboratory duplicates, blank materials,

and external laboratory checks. As assaying methods have evolved over time, detailed information about

the specific protocols used for each drill hole is available in the past press releases on Sirios' website at

www.sirios.com.

Qualified Person Statement and NI 43-101 Disclosure

The Mineral Resource Estimate mentioned in this press release conforms to National Instrument 43-101

standards and was prepared by Pierre-Luc Richard, P . Geo., independent qualified person, as defined by

NI 43-101 guidelines. The e Ưective date of the estimate is July 20, 2022. The above -mentioned mineral

resources are not mineral reserves as they do not have demonstrated economic viability. The quantity and

grade of the reported Inferred Mineral Resources are conceptual in nature and are estimated based on

limited geological evidence and sampling. Geological evidence is su Ưicient to imply but not verify

geological and grade or quality continuity.

The scientific and technical information contained in this press release has been reviewed and approved

by Dominique Doucet, P .Eng. and Guillaume Doucet, P .Geo., who are Qualified Persons as defined by

National Instrument 43-101.

About PLR Resources

PLR Resources is a trusted geological consulting firm founded by Pierre Luc Richard, a mineral resource

estimation expert who has authored/coordinated more than 100 technical reports under National

Instrument 43-101 and JORC. The company specializes in mineral resource estimates and project

evaluations and oƯers a wide variety of services, from grassroots exploration planning to feasibility studies

and mining operation optimization, serving clients that include juniors, major operators as well as financial

experts seeking reliable and realistic advice.

www.plr-resources.com

About Sirios

Sirios Resources Inc. (TSX-V: SOI; OTCQB: SIREF) is a Quebec-based mineral exploration company focused

on developing its 100%-owned Cheechoo gold property, located in Eeyou Istchee James Bay, Canada.

For more information, please contact:

Dominique Doucet, CEO

450-482-0603

[email protected]

www.sirios.com

Cautionary note regarding forward-looking statements

This news release contains “forward-looking information” within the meaning of applicable Canadian

securities legislation based on expectations, estimates and projections as at the date of this news release.

Forward-looking information involves risks, uncertainties and other factors that could cause actual events,

results, performance, prospects and opportunities to diƯer materially from those expressed or implied by

such forward-looking information. Factors that could cause actual results to di Ưer materially from such

forward-looking information include, but are not limited to, capital and operating costs varying significantly

from estimates; the preliminary nature of metallurgical test results; delays in obtaining or failures to obtain

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

and costs of financing needed in the future; changes in equity markets; inflation; fluctuations in

commodity prices; delays in the development of projects; the other risks involved in the mineral

exploration and development industry; and those risks set out in the Company’s public documents filed

on SEDAR at www.sedar.com. Although the Company believes that the assumptions and factors used in

preparing the forward-looking information in this news release are reasonable, undue reliance should not

be placed on such information, which only applies as of the date of this news release, and no assurance

can be given that such events will occur in the disclosed time frames or at all. The Company disclaims any

intention or obligation to update or revise any forward-looking information, whether as a result of new

information, future events or otherwise, other than as required by law.