Opus One Gold Corp Gets Positive Results from a Laser Induced Breakdown Spectrometry Study on Noyell Project, Zone 1 Gold Discovery

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Opus One Gold Corp (TSX-V: OOR) (the "Company" or "Opus One") is pleased to present positive results obtained from a Laser Induced Breakdown Spectrometry (LIBS) study from ECORE (ELEMISSION LIBS technology) on drill core recovered during its winter 2025 drilling project on Zone 1 on its 100% owned Noyell gold project, Abitibi, Quebec. This study is part of a metallurgical evaluation program aimed at acquiring a better understanding of Zone 1 gold association with other metals and minerals.

Opus One received the results of a ECORE study carried out on mineralized core from holes NO-25-07 and NO-25-13. The former is a relatively shallow hole while the latter represents the deepest high-grade interval obtained on Zone 1 to date. The goal of the study was to identify mineralogical associations and correlations within the mineralized zones. In detail, Opus One wanted to identify which minerals are directly related to the precious metals as well as to clearly define alteration minerals and/or patterns within the zone itself and its periphery.

If you want to consult our 2025 drill results, please refer to our press releases issued on September 08, 2025, July 15 and 29^th 2025, June 02, 10 and 16^th 2025 and May 12, 21 and 26^th 2025.

Results of the study (see figure) clearly indicate a strong relationship between precious metals (gold and silver which are always observed together) and sulphides minerals. The most abundant sulphide mineral is pyrrhotite followed by much less arsenopyrite and pyrite. Therefore, precious minerals are observed with or close to pyrrhotite, arsenopyrite, quartz, ankerite, sericite and to a much lesser extent to albite. Quartz, ankerite, sericite and albite represent the alteration assemblage typical of Zone 1. These observations are good for the near surface mineralization as well as the deeper one.

Zone 1 is bordered by an alteration assemblage consisting of chlorite, Iron oxide, siderite and quartz. We note that the alteration pattern is quite different within the mineralized zone compared to its periphery.

Results of this study are quite encouraging. It appears that gold is found in a free state in association with several minerals and not encapsulated within a particular mineral. This hypothetically means that gold could be easily liberated during the milling process and recoveries could be high. Although metallurgical studies will eventually have to be completed to quantify the rate of recovery for the precious metals, this study appears promising for the future of the project.

Opus One is currently active in its drilling season. Numerous drill targets have been identified to infill and to extend Zone 1 in all directions and to test new areas in the western portion of the property where significant gold was reported in drill records in the 80's and 90's by previous operators. We would like the 2026 drill program, if weather cooperates, to be in the order of 13,000 to 14,000 meters of core in 26 holes. The permitting process is fully secured with 3 drill rigs currently working on the property.

ZONE 1 – LASER INDUCED BREAKDOWN SPECTROMETRY

ZONE 1 – LASER INDUCED BREAKDOWN SPECTROMETRY

DÉCOUVERTE ZONE 1 – SECTION LONGITUDINALE

DÉCOUVERTE ZONE 1 – SECTION LONGITUDINALE

2025 DRILL RESULTS

2025 DRILL RESULTS

Louis Morin, Opus One CEO commented: Zone 1 on Noyell continues to deliver very positive news for gold. The completed LIBS study gives Opus One a real boost for the future. As a first mineralogical/metallurgical observation, it appears that gold encountered in Zone 1 is found in a free state, finely disseminated and in close proximity to sulphide minerals, therefore a potential good recuperation rate seems achievable should gold production ever become possible. Although more studies will be carried out to confirm our interpretation, things look very good for Noyell gold project as a whole.

OPUS ONE Resources Inc.

Opus One Resources Inc. is a mining exploration company focused on discovering high quality gold and base metals deposits within strategically located properties in proven mining camps, close to existing mines in the Abitibi Greenstone Belt, north-western Quebec and north-eastern Ontario - one of the most prolific gold mining areas in the world. Opus One holds assets in the Val-d'Or and Matagami mineral districts.

An independent qualified person, Pierre O'Dowd P.Geo, has verified and approved the data disclosed, including sampling, analytical, and test data underlying the information or opinions contained in the written disclosure as required by section 3.1 and 3.2 of NI43-101.

Forward-Looking Statements

This news release contains statements that may constitute "forward-looking information" within the meaning of applicable Canadian securities legislation. Forward-looking information may include, among others, statements regarding the future plans, costs, objectives or performance of Opus One, or the assumptions underlying any of the foregoing. In this news release, words such as "may", "would", "could", "will", "likely", "believe", "expect", "anticipate", "intend", "plan", "estimate" and similar words and the negative form thereof are used to identify forward-looking statements. Forward-looking statements should not be read as guarantees of future performance or results, and will not necessarily be accurate indications of whether, or the times at or by which, such future performance will be achieved. No assurance can be given that any events anticipated by the forward-looking information will transpire or occur, including the anticipated exploration program on the project, the results of such exploration program, the development of the project and what benefits Opus One will derive from the project, the expected demand for lithium. Forward-looking information is based on information available at the time and/or management's good-faith belief with respect to future events and are subject to known or unknown risks, uncertainties, assumptions, and other unpredictable factors, many of which are beyond Opus One' control.

These risks, uncertainties and assumptions include, but are not limited to, those described under "Financial Instruments" and "Risk and Uncertainties in Opus One's Annual Report for the fiscal year ended August 31^st, 2025," a copy of which is available on SEDAR at www.sedar.com and could cause actual events or results to differ materially from those projected in any forward-looking statements. Opus One does not intend, nor does Opus One undertake any obligation, to update or revise any forward-looking information contained in this news release to reflect subsequent information, events or circumstances or otherwise, except if required by applicable laws.

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 the release.

For more information, please contact:

Louis Morin

Chief Executive Officer & Director

Tel.: (514) 591-3988

Michael W. Kinley, CPA, CA

President, Chief Financial Officer & Director

Tel: (902) 402-0388

info@OpusOneGold.com