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A.I.S. Resources Signs Earn-In Agreement with Riversgold on the New Copper/Gold/Antimony Discovery at Saint John, New Brunswick Significant results reported for Antimony up to 10.8%, Gold up to 70.4 g/t, Copper up to 17.6% and Silver up to 48 ounces per tonne

Drill Results Mergers & Acquisitions Property Options & Staking

A.I.S. Resources Limited

1120 – 789 West Pender Street

Vancouver BC V6C 1H2 Canada

www.aisresources.com

A.I.S. Resources Signs Earn-In Agreement with Riversgold on

the New Copper/Gold/Antimony Discovery at Saint John, New

Brunswick

Significant results reported for Antimony up to 10.8%, Gold up to 70.4

g/t, Copper up to 17.6% and Silver up to 48 ounces per tonne

Vancouver, B.C. – September 15, 2025 – A.I.S. Resources Limited (TSXV: AIS, OTC-Pink: AISSF)

(“AIS” or the “Company”) is pleased to announce that it has entered into an earn-in agreement

with Riversgold Ltd. (ASX: RGL) (“Riversgold”), granting AIS the right to acquire up to a 75%

interest in the new Saint John IOCG/Porphyry Project located in New Brunswick, Canada.

AIS CEO, Marc Enright-Morin commented, “We are excited to partner with Riversgold on this

very exciting newly discovered Saint John Project. The combination of very high-grade

mineralisation, excellent infrastructure, and district-scale potential provides AIS with a

unique opportunity to advance a possible IOCG/porphyry system in one of Canada’s most

mining-friendly jurisdictions. Saint John is exploration and drill ready with two drill

programs already approved. Its unique location near the coast means we can explore here in

a meaningful way all year round and we look forward to getting the drills turning and come

up with the discovery hole.”

Riversgold Executive Chairman, David Lenigas added, “This transaction with AIS enables

Riversgold to retain a meaningful exposure to the upside of the Saint John Project, while AIS

commits to an aggressive exploration program. AIS, as a Canadian company, is much better

placed to move this incredible gold/silver/copper/antimony discovery forward whilst

Riversgold shifts it focus towards developing its large porphyry gold project near Kalgoorlie

in Western Australia. We look forward to assisting AIS immediately getting on to the ground

and advancing drilling and development across this highly prospective district.”

About the Saint John Project:

The Saint John Project is a district-scale IOCG/porphyry exploration target providing

strategic exposure to gold and silver (precious metals), copper (energy transition metal), and

antimony (critical mineral).

The project covers 101 km² in a Tier-1 mining jurisdiction. Located just 20 km west of Saint

John, New Brunswick and 50 km from the U.S. border, the project benefits from exceptional

infrastructure, including highways, rail, deep-water port, power stations, and a skilled local

workforce.

Riversgold have released multiple press releases on the Australian Stock Exchange over the

past year as they have moved this project up the value chain. Geological results were

A.I.S. Resources Limited

1120 – 789 West Pender Street

Vancouver BC V6C 1H2 Canada

www.aisresources.com

previously disclosed by Riversgold in press releases on ASX dated January 29, 2025 and

April 9, 2025. Refer to www.riversgold.com.au

Geological Highlights:

Little Lepreau Prospect

- Roadside Quary surface samples: Gold up to 41.6 g/t, Silver up to 1,600 g/t, Copper up

to 7.64%, Antimony >1%.

- Magnetic data received from the high resolution 25 metre line spaced survey has

delineated multiple magnetic low response areas that bear a similar magnetic signature

to the Roadside Quarry mineralization.

- Maiden drilling (2,000m) approved for 2025.

Prince of Wales Prospect

- surface samples: Gold up to 11.4 g/t, Silver up to 1,050 g/t, Copper up to 10.55%, Lead

up to 18.85%.

Hideaway Prospect

- surface samples: Gold up to 1.7 g/t, Silver up to 8 g/t, Copper up to 2.01%.

Next Steps:

• Expand drone MobileMT + IP surveys across the whole project and refine drill targets

(~CAD $300,000 budget).

• Commence 2,000m maiden RC/DD drill program at Little Lepreau in 2025/2026.

Transaction Terms:

• On signing: AIS to issue 2,860,000 shares at $0.05 per share to Riversgold.

• To earn 51% AIS to spend:

- Year 1: CAD $400,000 on early exploration, including drone MobileMT surveys, IP

survey, and 1,000 metres of approved drilling.

- Year 2: CAD $1 million additional drilling.

• To earn 75% AIS to spend:

- Year 3-4: CAD $3 million on drilling and early development work.

• Riversgold will retain a 25% free-carried interest through to the decision to mine.

The agreement is subject to TSXV acceptance.

A.I.S. Resources Limited

1120 – 789 West Pender Street

Vancouver BC V6C 1H2 Canada

www.aisresources.com

Figure 1 - Saint John Project (Source of Map: Riversgold press release on ASX dated April 9, 2025)

Figure 2 – Prince of Wales roadside cutting with exposed mineralization (Source of Map: Riversgold

press release on ASX dated January 29, 2025)

A.I.S. Resources Limited

1120 – 789 West Pender Street

Vancouver BC V6C 1H2 Canada

www.aisresources.com

Figure 3 – Little Lepreau Roadside Quarry Prospect (Inset 1) - Sample Grades (Source of Map: Riversgold

press release on ASX dated April 9, 2025)

Figure 4 - Hideaway Prospect (Inset 2) - Sample Grades (Source of Map: Riversgold press release on ASX

April 9, 2025)

A.I.S. Resources Limited

1120 – 789 West Pender Street

Vancouver BC V6C 1H2 Canada

www.aisresources.com

Figure 5 - Price of Wales Prospect (Inset 3) - Sample Grades (Source of Map: Riversgold press release on

ASX dated April 9, 2025)

Technical information in this news release has been reviewed and approved by Mr. Edward

Mead, who is a Qualified Person under the definitions established by the National Instrument

43-101 and who is a Fellow of the Australasian Institute of Mining and Metallurgy. Mr Mead is a

director of Riversgold Ltd and a consultant to Riversgold through Doraleda Pty.

Bi-Weekly default status report

The Company is providing a bi-weekly default status report in accordance with National Policy 12-

203 Management Cease Trade Orders (“NP 12-203”). On July 30, 2025, the Company announced

that it has been granted a voluntary management cease trade order in accordance with NP 12-

203 due to it not being able to file its annual financial statements and management’s discussion

and analysis (“MD&A”) for the year ended March 31, 2025, and the related CEO and CFO

certifications (collectively, the “Annual Filings”) on SEDAR within 120 days of its financial year-

A.I.S. Resources Limited

1120 – 789 West Pender Street

Vancouver BC V6C 1H2 Canada

www.aisresources.com

end. The management cease trade order has been granted by the Company’s principal regulator,

the British Columbia Securities Commission.

The Company was not able to complete the year-end audit within the time periods required by

National Instrument 51-102 due to insufficient funds. As a result, the Company requires additional

time to file the Annual Filings.

The Company’s audit is substantially completed. Proceeds from the private placement announced

August 28, 2025 will be partially used to complete the audit. The Company expects to file its

Annual Filings as soon as they are available, but in any event no later than September 29, 2025,

and will issue a news release once they have been filed.

Pursuant to NP 12-203, the Company must file bi-weekly default status reports in the form of

further news releases during the period of the MCTO. The Company reports that it is working

diligently with its auditors to complete the audit in a timely manner and since its news release of

July 30, 2025, there have been no material changes regarding the information contained in that

news release other than as disclosed in the Company’s news releases. The Company confirms

there have been no failures by the Company in fulfilling its stated intentions with respect to

satisfying the provisions of the alternative information guidelines under NP 12-203, and there

has not been, nor is there anticipated to be, any specified default subsequent to the default

announced in the Company’s news release of July 30, 2025. The Company also confirms that

there is no other material information concerning the affairs of the Company that has not been

generally disclosed as of the date of this news release.

About A.I.S. Resources Limited

A.I.S. Resources Limited is a publicly traded company listed on the TSX Venture

Exchange. The company focuses on natural resource opportunities, aiming to unlock

value by acquiring early-stage projects and providing the necessary technical and

financial support to develop them. AIS is guided by a seasoned team of engineers,

geologists and finance professionals with a proven record of success in capital markets.

On Behalf of the Board of Directors,

A.I.S. Resources Limited

Marc Enright-Morin, CEO

Corporate Contact

For further information, please contact:

Marc Enright-Morin, CEO

T: +1-778-892-5455

E: [email protected]

Website: www.aisresources.com

ADVISORY: This press release contains forward-looking statements. Although the

Company believes that the expectations reflected in these forward-looking statements

are reasonable, undue reliance should not be placed on them because the Company can

A.I.S. Resources Limited

1120 – 789 West Pender Street

Vancouver BC V6C 1H2 Canada

www.aisresources.com

give no assurance that they will prove to be correct. Since forward-looking statements

address future events and conditions, by their very nature they involve inherent risks

and uncertainties. The forward-looking statements contained in this press release are

made as of the date hereof and the Company undertakes no obligations to update

publicly or revise any forward-looking statements or information, whether as a result

of new information, future events or otherwise, unless so required by applicable

securities laws. Neither TSX Venture Exchange nor its Regulation Services Provider (as

that term is defined in policies of the TSX Venture Exchange) accepts responsibility for

the adequacy or accuracy of this release.

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.