Mr. Louis Morin reports

OPUS ONE GOLD CORP NOYELL GOLD PROJECT, ZONE 1 DISCOVERY, COMPANY UPDATE

Opus One Gold Corp. is pleased to present a technical update after a successful drilling program carried out at the beginning of winter, 2025, on its 100-per-cent-owned Noyell gold project, south of Matagami in Abitibi, Quebec.

All assay results have been received, compiled and published in previous news releases. Opus One wishes now to present its new interpretation for the gold mineralization on its zone 1 discovery. The longitudinal section is looking north. It strikes at N 110 degrees and it dips steeply to the south (66 degrees S). At the 300-metre (m) level, zone 1 extends for approximately 600 m in the east-west direction. Zone 1 appears to reach surface, under the overburden, and it has been followed down to the 500 m level, where it remains open. True thickness of zone 1 is variable, but it reaches 15 m in its upper portion (NO-25-07). Hole NO-25-13, the deepest high-grade interval of zone 1, exhibits a true thickness of over five m, which represents the approximate average width of the zone.

The mineralization within zone 1 consists of a stockwork of quartz, iron carbonates and semi-massive sulphides (mostly pyrrhotite, with minor pyrite and arsenopyrite) hosted by fine sediments of the Taibi formation along the Casa-Berardi-Douay-Cameron deformation corridor (CBDC). Zone 1 is often, but not always, spatially associated with a narrow band of oxide iron formation (BIF).

A preliminary geological interpretation indicates that zone 1 might represent a sulphidization of the BIF in a zone of tension along the deformation corridor. The CBDC deformation corridor, which strikes nearly east-west to the west of zone 1, appears to bend slightly to the south near zone 1, creating a zone of tension, which was filled by the stockwork. The gold-bearing fluids introduced a lot of quartz, theoretically transformed the magnetite (BIF) into iron sulphides, and created a strong and pervasive alteration halo consisting mostly of chamosite, sericite and iron carbonates. Highest gold grades coincide with the highest sulphide content. Some visible gold was observed within the quartz also. No shearing is associated with zone 1.

Latest drilling by Opus One (9,000 m during the winter months of 2025) indicates that the gold mineralization within the zone 1 discovery is open to the east, at least near surface (DDH NO-25-18), it is open at depth along a high-grade steeply dipping shoot in its eastern portion (DDH NO-25-13), it appears to be open at depth in the centre of the zone along a lower-grade shoot (NO-25-15a) and it appears open along three vectors toward the west, at depth (NO-25-15a, NO-25-17 and Soquem's historical hole 1311-97-24).

Opus One is currently carrying digitization and spectrometric studies on core samples from the latest drilling program to better characterize the gold mineralization of zone 1. The company's goal is to identify with certainty where the gold occurs within the stockwork and what are its main mineralogical associations. This work should provide vital information on the potential for gold recovery for this type of mineralization.

Opus One is currently finalizing the compilation of data from its 2025 biochemical survey carried out directly to the west and southwest of zone 1. Results should be made available soon.

Opus One is already gearing up for the upcoming drilling season. Numerous drilling 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 1980s and 1990s by previous operators. The permitting process has been initiated and three drill rigs have been secured for the winter months, early in 2026.

Louis Morin, Opus One chief executive officer, commented: The 2025 drilling program on its Noyell project has been a real success for Opus One. The gold mineralization of zone 1 has significantly increased and remains potentially open in many directions and along several vectors. We are very optimistic about the forthcoming drilling program on zone 1 and on the western portion of the property, where Opus One never ventured before. With the mobilization of three drill rigs in January, 2026, definition drilling of zone 1 should accelerate significantly. We will go wider and we will go deeper than ever. The excitement continues."

Sample preparation, analysis and QA/QC (quality assurance/quality control) program

All core recovered is NQ size. All samples are described, labelled, cut (diamond saw) and bagged at Technominex's 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 (50 grams (g)), with ICP-OES (inductively coupled plasma optical emission spectroscopy) finish. All samples equal or above 10 grams per tonne (g/t) gold (Au) are submitted to ore-grade gravimetric finish.

Opus One's QA/QC program consists of one control sample inserted, at Technominex's facility, after nine regular samples. Control samples consist of a certified blank and various gold grades certified material.

About Opus One Gold Corp.

Opus One 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, northwestern Quebec and Northeastern 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, PGeo, 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 sections 3.1 and 3.2 of National Instrument 43-101.

We seek Safe Harbor.