RPX Gold Files NI 43-101 Technical Report for Robust Wawa Gold Project PEA Highlighting C$523 M NPV “After-Tax” and <1 Year Payback

Press Release

Toronto, Ontario – March 18, 2026 – RPX Gold Inc. (“ RPX Gold” or the “Company”) (TSXV: RPX) is pleased to announce that it has filed a National Instrument 43-101 (“NI 43-101”) Technical Report supporting the Preliminary Economic Assessment (“PEA”) for the Company’s 100%-owned Wawa Gold Project (the “Project”), located in the Michipicoten Greenstone Belt of northwestern Ontario. The PEA was prepared by DRA Americas Inc. (“DRA”), in accordance with NI 43-101 Standards of Disclosure for Mineral Projects. All amounts are in Canadian dollars, unless otherwise stated.

The results of the PEA were previously announced in the Company’s news release dated February 18, 2026 (RPX Gold Inc. Delivers Robust Preliminary Economic Assessment and Updated Mineral Resource Estimate for Wawa Gold Project ). The PEA outlines a capital-efficient development strategy designed to generate early free cash flow while minimizing upfront capital and execution risk. The mine plan prioritizes near-surface mineralization in the early years, followed by underground production, while leveraging existing regional infrastructure and potential toll milling opportunities. The approach described in the PEA results in initial capital of approximately C$51 million.

The technical report titled “Technical Report, Preliminary Economic Assessment, Wawa Gold Project” with an effective date of February 18, 2026, has been filed under the Company’s profile on SEDAR+ (www.sedarplus.ca) and is also available on the Company’s website (www.rpxgold.com).

PEA Highlights

⦁ After-tax NPV5% C$523 million and after-tax IRR of 99.7% at a base case gold price of US$3,500/ounce (“oz”) and an after-tax NPV5% of C$935M and an IRR of 181% at a gold price of US$4,500/oz

⦁ Base case average annual after-tax free cash flow1 (excluding initial capital expenditures) of C$85M and cumulative after-tax free cash flow of C$767M; first 5 years of production $354 M after-tax free cash flow (excluding initial capital expenditures)
⦁ Initial Capital: ~C$51 million

⦁ Payback Period: <1 year

Michael Michaud, President and CEO of RPX Gold commented: “The filing of the NI 43-101 technical report represents another important milestone as we advance the Wawa Gold Project along a clear development pathway toward a Pre-Feasibility Study and ultimately production. The PEA highlights a capital-efficient strategy utilizing regional toll milling, which has the potential to achieve such significant objectives as an accelerated time to production, reduction in upfront capital requirements, and the generation of early cash flow to support the continued growth of the project.”

QUALIFIED PERSONS

The technical information in this news release has been reviewed and approved by qualified persons as defined under NI 43-101. Full details are in the filed NI 43-101 Technical Report available on Sedar+.

⦁ Syed Saad Mohsin Ali, P. Eng., DRA Americas Inc.
⦁ Alex Duggan, P. Eng., DRA Americas Inc.
⦁ Steve Haggerty, P. Eng.,Haggerty Technical Services Corp.
⦁ Nigel Fung, P. Eng., DRA Americas Inc.
⦁ André-François Gravel, P. Eng., DRA Americas Inc.
⦁ Jean-François Montreuil, P. Geo., RPX Gold Inc.
⦁ Brian Thomas, P. Geo., WSP Canada inc.
⦁ Garth Wilcox, P. Eng., DRA Americas Inc.

Cautionary statement: Readers are cautioned that a PEA is preliminary in nature, it includes inferred mineral resources that are considered too speculative geologically to have economic considerations applied to them that would be enable them to be categorized as mineral reserves, and there is no certainty that the PEA will be realized.

ABOUT RPX GOLD INC.

RPX Gold Inc. (formerly Red Pine Exploration Inc.) is a Toronto-based gold company transitioning from exploration to development. The Company’s shares trade on the TSX Venture Exchange under the symbol “RPX” and on the OTCQB Markets under the symbol “RDEXF”.

The Company’s flagship asset, the Wawa Gold Project, is located in northwestern Ontario, in the Michipicoten Greenstone Belt of Ontario, adjacent to several established gold-producing operations, including those operated by Wesdome Gold Mines Ltd., Alamos Gold Inc., and Hemlo Mining Corp. The Wawa Gold Project also benefits from strong infrastructure and excess regional mill capacity.

The property currently hosts a National Instrument 43-101 compliant resource from two mineral deposits, namely the Jubilee Shear and the Minto Mine. The mineral resource includes an indicated mineral resource of 22.909 million (“M”) tonnes grading 1.69 grams per tonne gold (“g/t Au”) containing 1,244,000 ounces of gold and an inferred mineral resource of 9.951 M tonnes grading 1.59 g/t Au containing 509,000 ounces of gold, with both open pit and underground mining potential. Gold mineralization extends to surface on a historic mining property, which supports a staged development strategy.

RPX Gold is evaluating Phase 1 open-pit operations designed to generate early cash flow and help self-fund advancement of the Wawa Gold Project as the Project transitions to an underground operation. The phased approach is aimed at de-risking development, accelerating time to revenue, and minimizing shareholder dilution.

For material information about the Company, visit http://www.rpxgold.com

Or contact:

Michael Michaud, President and Chief Executive Officer, at (416) 364-7024 or mmichaud@rpxgold.com

Or

Manish Grigo, Director of Corporate Development, at (416) 569-3292 or mgrigo@rpxgold.com

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.

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