Omai Gold Mines intersects high-grade zone at East Wenot, Omai Gold Project, Guyana

Omai Gold Mines Corp. [TSXV: OMG; OTCQB: OMGGF] reported assay results from the current drilling program at its 100%-owned Omai Gold Project in Guyana, South America. Significant mineralization was intersected in central Wenot (13.54 g/t Au over 13.3m in Hole 145W) and in a new wide high-grade zone at East Wenot (11.07 g/t Au over 14.7m in Hole 142)). The remaining results from the satellite targets are also reported.

A total of 79 holes (35,300m) have been completed on the Omai project in 2025. Of these, 30 holes (13,250m) completed or underway on Wenot, are not included in the recent August 2025 updated Mineral Resource Estimate (MRE). These will contribute to an updated MRE planned for early 2026, in advance of the updated Preliminary Economic Assessment (PEA) expected in H1 2026. Five rigs are currently drilling on the Wenot deposit, continuing to focus on areas that have the potential to further expand the resource and optimize the upcoming PEA. The Company is pleased to report that it has exceeded its target of completing an additional 10,000 metres of drilling, post the August MRE, by year end.

Highlights from the recent drilling include Hole 25ODD-142 (East Wenot) that returned 11.07 g/t Au over 14.7m, including 34.31 g/t Au over 4.3m. Hole 25ODD-145W (Central Wenot) returned 13.54 g/t Au over 13.3m,  including 27.82 g/t Au over 6.2m, including 63.17 g/t Au over 2.2m and 2.01 g/t Au over 15.0m.

Hole 25ODD-144 (East Wenot) returned 1.11 g/t Au over 31.6m, 0.98 g/t Au over 12.0m and 0.99 g/t Au over 13.0m. Hole 25ODD-146 (East Wenot) returned 6.62 g/t Au over 2.4m and 1.02 g/t Au over 16.1m. Hole 25ODD-140 (Camp Zone) returned 2.63 g/t Au over 5.5m, including 6.06 g/t Au over 2.3m.

Elaine Ellingham, President & CEO commented: “We are excited to see a very significant new zone at the east end of Wenot, where there has been limited drilling in the past. The intersection of 11.07 g/t Au over 14.7m in Hole 142 represents a spectacular new zone and follow-up drilling is underway. We greatly accelerated drilling this year at Omai and set a goal of completing an additional 10,000 metres of drilling on Wenot prior to year end and are pleased to announce that we have already exceeded this goal. An additional 30 holes have been completed or are currently underway on Wenot and these additional Wenot holes will contribute to a planned updated Mineral Resource Estimate, which will be integrated into the updated PEA planned for H1 2026. Results are pending for the majority of these new holes but are expected shortly.

“The additional Central Wenot drilling continues to intersect impressive gold zones, as exemplified in holes 145w and 144 reported today. In particular, the intersection of 13.54 g/t Au over 13.3m in hole 145w illustrates Wenot’s potential for a very robust open pit mine plan. The focus of the post-August drill program has been to explore and delineate gold zones within the southern sedimentary sequence that have seen less drilling. However, we continue these holes to the north in order to also drill the CQFP and “Dike Corridor” zones that constitute the major gold zones at Wenot. As a result, this drilling has multiple purpose:it is expected to further increase the Wenot resource, to contribute to reducing the strip ratio in the upcoming PEA, and to upgrade some of the Inferred MRE to Indicated MRE in the major gold zones.”

Two significant new gold intersections at East Wenot, beyond the area of the historical pit, indicate high potential for further expansion of the Wenot deposit at the eastern end. Of note, hole 25ODD-142 intersected 11.07 g/t Au over 14.7m at a vertical depth of approximately -240m. A second hole 25ODD-146 above intersected 1.02 g/t Au over 16.1m at a vertical depth of – 210m. Shallow historical drilling by Placer Dome in the early 1990s intersected the interpreted up dip equivalent of this zone, including 1.28 g/t Au over 21.0m, 3.66 g/t Au over 7.9 m, 7.58 g/t Au over 3.0 m and 2.33 g/t Au over 10.5m, all at less than -130m depths. The location of this new zone suggests that the central contact and central quartz feldspar porphyry unit (CQFP) may dip to the south in this eastern area. These holes tested this concept and appear to have successfully proven this. The Wenot gold zones, the contact, CQFP and other main zones are generally near vertical, to slightly north dipping. An additional drill hole is underway to further explore this new high-grade zone at the eastern end of the deposit.

Holes 25ODD-142 and 25ODD-146 were drilled on East Wenot in an area more sparsely explored. The primary objective was to test continuity of the mineralized zones previously intersected in 22ODD-046 (50m to the west), in order to extend mineralization in this area. Hole 142 was drilled from the north and intersected a couple of minor gold zones within the volcanics, including 1.01 g/t Au over 1.5m and 4.43 g/t Au over 1.5m. However, within the Dike Corridor, a very significant high-grade gold zone grading 11.07 g/t Au over 14.7m was intersected mostly within a hematitized “red” felsic dike, at an approximate vertical depth of -210m. This red felsic dike is almost merged with the CQFP in this area. Further downhole, a series of narrow mineralized intercepts within the sediments, included 0.77 g/t Au over 3.0m, 1.88 g/t Au over 1.3m and 0.91 g/t Au over 4.5m.

Seven drill holes (1,240m) were recently completed on the BBH target, following up on the company’s previous favourable results from trenching and drilling as well as from compilations of historical results.

Results are provided for the two remaining holes. Hole 25ODD-141 was drilled 40m northeast of Hole 25ODD-131 which intersected 20.33 g/t Au over 5.3m at a depth of -50m (previously reported). Hole 25ODD-141 was also drilled vertically and intersected only a couple of narrow intercepts of anomalous gold, with best results of up to 1.62 g/t Au over 1.3m (-100m depth), and 0.81 g/t Au over 1.25m (-144m depth). Hole 25ODD-139 was drilled to test across one of the two interpreted northeast trending control structures. A sequence of chlorite-altered volcanics cut by a couple of diorite dikes was intersected but no significant gold mineralization.

All but one hole of this seven-hole program intersected gold mineralization; although recent results show narrow and lower grade mineralization, this near surface widespread mineralization together with the known high-grade areas warrant further exploration. These seven holes proved useful for better understanding the orientation and distribution of gold mineralization in this area. Once the new drill data is incorporated, additional drilling will be planned.

The Camp Zone Target lies approximately 300-500m west of the Wenot deposit.

A total of seven diamond drill holes (2,931m) were completed recently at Camp Zone. Gold mineralization has now been identified along a 450m strike in this area. Results from five of these holes were reported recently, with significant results including 2.72 g/t Au over 16.3m in hole 25ODD-135, and 6.81 g/t Au over 1.0m and 2.05 g/t Au over 7.5m in hole 25ODD-136,, and 0.85 g/t Au over 12.7m in hole 25ODD-138 (news release dated November 3, 2025). These intersections are at a vertical depth of less than -200m, making this Camp Zone an attractive potential satellite pit.

Omai Gold entered into an investor relations agreement (the TBIR Agreement) with TB Investor Relations to assist the company in enhancing its communication strategy. In consideration for TBIR’s services, the Company will pay TBIR a monthly fee of $5,000 plus HST.

Omai Gold Mines is focused on rapidly expanding the two orogenic gold deposits at its 100%-owned Omai Gold Project in Guyana, South America. In August 2025, the company announced a 96% increase to the Wenot Gold Deposit NI 43-101 Mineral Resource Estimate (MRE) to 970,000 oz gold (Indicated) averaging 1.46 g/t Au, contained in 20.7 Mt and 3,717,000 oz gold (Inferred MRE) averaging 1.82 g/t Au, contained in 63.4 Mt. This brings the global MRE at Omai, including the Wenot and adjacent Gilt Creek deposits, to 2,121,000 ounces of gold (Indicated MRE) averaging 2.07 g/t Au in 31.9 Mt and 4,382,000 ounces of gold (Inferred MRE) averaging 1.95 g/t Au in 69.9 Mt.

A baseline PEA announced in April 2024, contemplated an open pit-only development scenario and included less than 30% of the new Mineral Resource Estimate for Omai. Five drills are currently active on the property: at Wenot the focus is to optimize the upcoming PEA, to further test the limits of the deposit, including both east and west, and to commence upgrading the large Inferred MRE to Indicated.

Additional drilling will continue to explore certain known gold occurrences for possible near-surface higher-grade satellite deposits. An updated PEA is planned for H1 2026 to include the expanded Wenot open pit deposit and the adjacent Gilt Creek underground deposit.