Adyton Resources Welcomes Lihir Deposit Expert Dr. Erin Johns to the Team to Drive Feni Gold-Copper Project Development

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Brisbane, Australia–(Newsfile Corp. – December 2, 2025) – Adyton Resources Corporation (TSXV: ADY) (“Adyton” or the “Company“) is very pleased to announce the appointment of Dr. Erin Johns to its technical team, focusing on the Company’s flagship Feni Gold-Copper Project in Papua New Guinea.

HIGHLIGHTS

• World-Class Lihir Au Deposit Expertise: Dr. Johns completed her PhD research specifically on the Lihir Gold Deposit, a neighbouring, world class alkalic-type epithermal gold deposit owned and operated by Newmont, which is crucial for understanding the geological controls at the Feni gold-copper deposit.

• Targeted De-Risking: Dr. Johns’ specialized knowledge will provide critical insights for Adyton to accurately vector towards high-grade Au-Cu zones and expand the resource at Feni, effectively de-risking the exploration model.

• Strategic Academic Ties: Dr. Johns maintains close connections with the Centre for Ore Deposits and Earth Sciences (CODES) at the University of Tasmania, a globally recognized leader in economic geology and volcanology.

• Enhanced Exploration Capability: Dr. Johns’ Lihir expertise directly aligns with the discovery process underway at Adyton’s 100%-owned Feni Project, an existing 1.46moz alkalic-type gold-copper resource, and significantly strengthens the technical team as the Company advances its exploration and resource growth strategy.

Tim Crossley, Chief Executive Officer, commented:

“We are thrilled to welcome Dr. Erin Johns to the Adyton team. Her specialized academic background on the anatomy of the world class Lihir gold system, combined with her boots-on-the-ground experience, provides an immediate and substantial competitive advantage for accelerating the discovery process and unlocking the full potential of Adyton’s whole-of-island land position.”

Dr. Johns commented:

“I am thrilled to join the Adyton team and contribute my experience from Lihir to the next phase of work at Feni. Having spent years studying the geological controls of the Lihir system, I see clear parallels in the volcanic architecture, structural framework, mineralisation types, and alteration patterns at Feni. Those similarities suggest we are only beginning to understand the scale and potential of this system. I’m looking forward to helping advance the Feni project, which I believe has all the ingredients to become another significant gold resource in the region.”

About Dr. Erin Johns

Dr. Erin Johns is an accomplished economic geologist with a focus on alkalic-type gold-copper systems in the Pacific Rim region. Her PhD dissertation (2020) was entitled “Geology of the Kapit NE and Coastal Ore Zones, Lihir Gold Deposit, Papua New Guinea” from the University of Tasmania (CODES).

Her expertise is directly relevant to Adyton’s strategy:

• The Feni and Lihir deposits are both classic examples of alkalic-type epithermal gold deposits, which represents a highly valuable, yet geologically complex, class of mineral systems globally.

• Dr. Johns’ PhD thesis at the University of Tasmania’s renowned CODES department focused on the geological controls that concentrated gold mineralization at Lihir. Understanding the relationship between these controls and the deep-seated intrusive complex is paramount.

• The full-time appointment ensures that Adyton is applying a “Lihir-style” geological lens and learnings to the Feni Project. This provides the technical team with the ability to swiftly interpret new data, recognize subtle alteration signatures, and refine targeting, dramatically increasing the probability of a major discovery.

About the Feni Gold-Copper Project

The Feni Project is a key asset in Adyton’s portfolio, located in a highly prospective region of Papua New Guinea known for world-class alkalic-type gold-copper deposits, including Lihir. The Company has a whole-of-island land position and has confirmed significant gold-copper mineralization at Feni. The Company is focussed on expanding its existing Kabang/Matangkaka resource and identifying new high-grade targets regionally.

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 press release.

ABOUT ADYTON RESOURCES CORPORATION

Adyton Resources Corporation (TSX Venture: ADY) is a gold and copper exploration and development company focused on world-class mineral jurisdictions. The Company holds a portfolio of highly prospective gold and copper projects in Papua New Guinea, including the 100%-owned Feni Gold-Copper Project and the Fergusson Island Gold Projects under a Joint Venture Agreement with EVIH. Adyton is committed to operating in a socially and environmentally responsible manner.

Feni Island Au-Cu project

The Feni Island Project has a MRE prepared in accordance with NI 43-101 (Oct 14, 2021), that has outlined an initial inferred ‎mineral resource of 60.4mt averaging 0.75 g/t Au, for contained gold of 1.46moz Au (cut-off grade 0.5g/t Au). See the NI 43-101 technical report entitled “NI 43-101 Technical Report on the Feni Gold-Copper Property, New Ireland ‎Province, Papua New Guinea prepared for Adyton Resources by Mark Berry (MAIG), Simon ‎Tear (MIGI PGeo), Matthew White (MAIG) and Andy Thomas (MAIG), each an independent mining consultant ‎and “qualified person” as defined in NI 43-101, available under Adyton’s profile on SEDAR+ at www.sedarplus.ca. Mineral resources are not mineral reserves and have not demonstrated economic viability.

Fergusson Island Au project

The Fergusson Island Au project has a MRE prepared in accordance with NI 43-101 dated October 14, 2021, which outlined an indicated mineral resource of 4.0mt at an average grade of 1.33g/t Au for contained gold of 173koz Au and an inferred mineral resource of 16.3mt at an average grade of 1.02g/t Au for contained gold of 540koz Au. See the technical report entitled “NI 43-101 Technical Report on the Fergusson Gold Property, Milne Bay ‎Province, Papua New Guinea” prepared for Adyton Resources by Mark Berry (MAIG), Simon ‎Tear (MIGI PGeo), Matthew White (MAIG) and Andy Thomas (MAIG), each an independent mining consultant ‎and “qualified person” as defined in NI 43-101, available under the Company’s profile on SEDAR+ at www.sedarplus.ca. Mineral resources are not mineral reserves and have not demonstrated economic viability.

For more information about Adyton and its projects, visit www.adytonresources.com.

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Qualified Person

The scientific and technical information contained in this press release has been prepared, reviewed, and approved by Dr Chris Bowden, PhD, GCMEE, FAusIMM(CP), FSEG, the Chief Operating Officer and Chief Geologist of Adyton, who is a “Qualified Person” as defined by National Instrument 43‐101 ‐ Standards of Disclosure for Mineral Projects.

Forward looking statements

This press release includes “forward‐looking statements”, including forecasts, estimates, expectations, and objectives for future operations that are subject to several assumptions, risks, and uncertainties, many of which are beyond the control of Adyton. Forward‐ looking statements and information can generally be identified by the use of forward‐looking terminology such as “may”, “will”, “should”, “expect”, “intend”, “estimate”, “anticipate”, “believe”, “continue”, “plans” or similar terminology. Forward looking statements in this news release include plans pertaining to the drill program, the intention to prepare additional technical studies, the timing of the drill program, uses of the recent drone survey data, the timing of updating key findings, the preparation of resource estimates, and the deeper exploration of high-grade gold and copper feeder systems. The forward‐looking information contained herein is provided for the purpose of assisting readers in understanding management’s current expectations and plans relating to the future. Readers are cautioned that such information may not be appropriate for other purposes.

Forward‐looking information are based on management of the parties’ reasonable assumptions, estimates, expectations, analyses, and opinions, which are based on such management’s experience and perception of trends, current conditions and expected developments, the receipt of any necessary permits, licenses and regulatory approvals in connection with the future development of the projects in a timely manner; the availability of financing on suitable terms for the development; construction and continued operation of the Fergusson Island Project and the Feni Island Project; the ability to effectively complete the drilling program; and Adyton’s ability to comply with all applicable regulations and laws, including environmental, health and safety laws.

Investors are cautioned that forward-looking statements are not based on historical facts but instead reflect Adyton’s management’s expectations, estimates or projections concerning future results or events based on the opinions, assumptions and estimates of managements considered reasonable at the date the statements are made. Although Adyton believes that the expectations reflected in such forward- looking statements are reasonable, such information involves risks and uncertainties, and under reliance should not be placed on such information, as unknown or unpredictable factors could have material adverse effects on future results, performance or achievements expressed or implied by Adyton. Among the key risk factors that could cause actual results to differ materially from those projected in the forward- looking statements are the following: impacts arising from the global disruption, changes in general macroeconomic conditions; reliance on key personnel; reliance on Zenex Drilling; changes in securities markets; changes in the price of gold or certain other commodities; change in national and local government, legislation, taxation, controls, regulations and political or economic developments; risks and hazards associated with the business of mineral exploration, development and mining (including environmental hazards, industrial accidents, unusual or unexpected formations pressures, cave‐ins and flooding); discrepancies between actual and estimated metallurgical recoveries; inability to obtain adequate insurance to cover risks and hazards; the presence of laws and regulations that may impose restrictions on mining; employee relations; relationships with and claims by local communities and indigenous populations; availability of and changes in the costs associated with mining inputs and labour; the speculative nature of mineral exploration and development (including the risks of obtaining necessary licenses, permits and approvals from government authorities); and title to properties. Investors are cautioned that any such statements are not guarantees of future performance and that actual results or developments may differ materially from those projected in the forward‐looking statements. Such forward‐looking information represents management’s best judgment based on information currently available. No forward‐looking statement can be guaranteed, and actual future results may vary materially. Readers are cautioned not to place undue reliance on forward looking statements or information. Adyton Resources Corporation undertakes no obligation to update forward‐looking information except as required by applicable law.

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