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Opus One GOLD Obtains 4.12 G/T GOLD over 7.3 M at 135M; Including 6.1 G/T GOLD over 4M from the First Hole of the Drilling Season ON Its Zone 1

Drill Results

800 Square Victoria, #3500

Montreal, Québec, H4Z 1E3

Tel: (514) 591-3988

[email protected]

NEWS RELEASE

MAY 12TH, 2025 TRADING SYMBOL: TSX-V: OOR

OPUS ONE GOLD OBTAINS 4.12 G/T GOLD OVER 7.3 M AT 135M; INCLUDING 6.1

G/T GOLD OVER 4M FROM THE FIRST HOLE OF THE DRILLING SEASON ON ITS

ZONE 1 GOLD DISCOVERY, ON NOYELL PROJECT

NOT FOR DISTRIBUTION TO U.S NEWSWIRE SERVICES OR FOR

DISSEMINATION IN THE UNITED STATES

Montreal, May 12th, 2025, Opus One Gold Corp (TSX -V: OOR) (the “ Company” or

“Opus One”) is pleased to announce that the first hole (NO -25-01) of the winter drilling

program on its 100% owned Noyell project near the town of Matagami , Abitibi, Québec,

returned 4.12 g/t Au over 7.3 m from 135 .0 to 142 .3 m . The mineralized interval

represents a true width of approximately 6 m within the Zone 1 structure. This result

includes a richer portion of 6.1 g/t Au over 4.0 m. A second interval, representing Zone

2, returned 4.71 g/t Au over 0.5 m from 206.5 to 207.0 m.

NO-25-01 was drilled in the upper portion of the mineralized structure, a sector that had

seen very limited drilling in the past. Zone 1 was intersected at a vertical depth of 115m

below surface. Drill hole location and parameters are as follows:

Drill

Hole Bearing Dip Start End Length Easting Northing Elevation

NO-25-

01 358,22 -60,12 0 225 225 311512,6 5487989 271,1

Following our initial observations, it was decided to extend the originally planned 7,000 m

drilling program to nearly 9,000 m (8,881 m). It totals 22 holes which have now all been

completed. Logging and assaying are in progress. More assay results are expected soon.

Louis Morin, Opus One CEO commented: The first results of this drilling season are much

better than anticipated. Those new results show that mineralized structure, near surface,

is very strong and its thickness seems to increase from previous deeper intervals. Based

on our preliminary visual review of the core, which indicated good evidences of

mineralization (presence of an extended stockwork of quartz and sulphides), we decided

to extend the drilling program as much as possible.

Sample preparation, analysis and QAQC program

All samples are described, labelled, cut (diamond saw) and bagged at Technominex’

facilities in Rouyn-Noranda. Samples are then shipped to AGAT certified Laboratory in

Val D’or for preparation. Sample pulps are then shipped to various AGAT laboratories in

Canada for analysis. Samples are assayed for gold using by Fire Assay (50g), with ICP-

OES Finish. All samples equal or above 10 g/t Au are submitted to ore grade gravimetric

finish.

Opus One’s QAQC program consists of one control sample inserted, at Technominex’

facility, after 9 regular samples. Control samples consist of a certified blank and various

gold grades certified material.

OPUS ONE GOLD Corp.

Opus One Gold Corp. 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 t he

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’ Annual

Report for the fiscal year ended August 31st, 2022, 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 Tel.: (514) 591-3988

Mic

hael W. Kinley, CPA, CA

Pr

esident, Chief Financial Officer & Director

Tel: (902) 402-0388

[email protected]

Visit Opus One’s website: www.OpusOneGold.com

Officer & Director