News Release

Alerio Enters into Letter of Intent to Acquire 100% Interest in Aurora NW Project, Guyana

Vancouver, Canada – December 9, 2025 – Alerio Gold Corp ("Alerio" or the "Company") (CSE: ALE) is pleased to announce that it has entered into a binding letter of intent, dated December 3, 2025 (the “LOI”), pursuant to which the Company will receive an option (the “Option”) to acquire 100% interest in the Aurora NW project, located in Guyana (the “Property”), comprising of associated mineral rights, permits and claims (the “Transaction”).

Highlights

• The Property consists of 4 Prospecting Permits Medium Scale (“PPMS”), as per Mining Act of Guyana’s definition (see Figure 1), totalling 4,799 acres (1,942 hectares)
• The Property is located in the Cuyuni – Mazaruni (Region 7) Region of Guyana.
• The Property is situated within the Cuyuni greenstone belt of the Guiana Shield in the Amazon Craton, an area known to potentially host gold mineralization, and it is located approximately three (3) kilometres from the Aurora Gold Mine concessions and approximately seven (7) kilometres from the Aurora mine, the largest active gold mine in Guyana, owned and operated by Zijin Mining Group Corporation, the global mining major
• The belt that covers the area inclusive of the Property is mainly composed of metamorphosed volcanic and sedimentary rocks intruded by granitic and tonalitic bodies and affected by strong deformation and greenschist-facies metamorphism.
• The Company while negotiating potentially additional acquisitions in the neighboring area, is also working on a geological work program for H1 2026 over the Property with more details to be announced in due course.

Figure 1. Red lines outline the Aurora NW Property in the Cuyuni - Mazaruni Region, Guyana

The Transaction

Pursuant to the terms of the LOI, upon closing the Transaction, the Company shall have the Option to acquire 100% interest in the Property over a period of three years (the “Option Period”)

• $50,000 USD cash consideration, $10,000 USD of which is payable upon signing the LOI and the balance upon signing the Definitive Agreement (the “Effective Date”) and an additional $50,000 USD six (6) months from the Effective Date.

• 2,000,000 of Common shares of the Company in the capital of the Company payable on the Effective Date.

In addition, a Net Smelter Royalty (“NSR”) will be granted to the vendor based on annual production levels, as defined under the Guyanese Mining Act and its applicable regulations, as follows:

• 1.5% NSR on annual production conducted on a Large-Scale Basis;
• 5.0% NSR on annual production conducted on a Medium-Scale Basis;
• 5.0% NSR on annual production conducted on a Small-Scale Basis.

The Company may also repurchase the NSR at upon for the sum of USD $500,000.00 that being the US $125,000 per permit for a total of four permits.

Qualified Person

Technical information in this news release has been reviewed and approved by Gregory Smith, P.Geo., a "Qualified Person" as defined under NI 43-101 Standards of Disclosure for Mineral Projects who is independent of the Company.

Note: the reader is cautioned that mineralization on adjacent or nearby properties is not necessarily indicative of mineralization on the Company’s property.

About Alerio Gold Corp.

Alerio Gold is a mineral exploration and development company in the business of acquiring, and exploring gold properties, with a focus in Guyana, South America.

ON BEHALF OF THE BOARD OF DIRECTORS

“Geoff Balderson”
Geoff Balderson, Director, CFO and Corporate Secretary

For further information, please contact:

Geoff Balderson
Telephone: 604-602-0001
Email: gb@corporateminds.ca

Forward-Looking Statements

This news release contains “forward looking statements” or “forward looking information” (collectively, “Forward Looking Statements”) that involve a number of risks and uncertainties. Forward Looking Statements are statements that are not historical facts and are generally, but not always, identified by the use of forward looking terminology such as “plans”, “targets”, “expects”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “outlook”, “intends”, “anticipates”, “believes”, or variations of such words and phrases or that state that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved, or the negative of any of these terms or similar expressions. The Forward Looking Statements in this news release relate to, among other things; the Company’s ability to complete diligence and negotiate an acceptable Definitive Agreement with Augusto; the ability of the parties to close the Transaction and the satisfaction of the various conditions to closing; the Company’s future exploration plan. Forward Looking Statements are based on certain key assumptions and the opinions and estimates of management and the Qualified Person, as of the date such statements are made, and they involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any other future results, performance or achievements expressed or implied by the Forward Looking Statements. In addition to factors already discussed in this news release, such factors include, among others, risks relating to the Company’s business, including possible changes in project parameters, including schedule and budget, as plans continue to be refined; uncertainties with respect to actual results of current exploration activities; the impact of the conflict in Ukraine and the Middle East, including resulting changes to the Company’s supply chain and costs of supplies; product shortages; delivery and shipping issues; limitation on insurance coverage; accidents, labour disputes and other risks of the mining industry; delays in obtaining governmental approvals or in the completion of development or construction activities; opposition by social and non-government organizations to mining projects and smelting operations; unanticipated title disputes; claims or litigation; cyber attacks and other cybersecurity risks; changes to tax regimes in the jurisdictions in which the Company operates; as well as those risk factors discussed or referred to in any other documents filed from time to time with the securities regulatory authorities in all provinces and territories of Canada and available on SEDAR+ at www.sedarplus.ca . The reader has been cautioned that the foregoing list is not exhaustive of all factors which may have been used. Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in Forward Looking Statements, there may be other factors that cause actions, events or results not to be anticipated, estimated or intended. There can be no assurance that Forward Looking Statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. The Company’s Forward Looking Statements reflect current expectations regarding future events and speak only as of the date hereof. Unless required by securities laws, the Company undertakes no obligation to update Forward Looking Statements if circumstances or management’s estimates or opinions should change. Accordingly, readers are cautioned not to place undue reliance on Forward-Looking Statements.