Omai Gold drills high-grade zones at Omai Gold Project, Guyana

Omai Gold Mines Corp. [TSXV: OMG; OTCQB: OMGGF] reported assay results from eight additional drill holes from the 2025 drilling program at its 100%-owned Omai Gold Project in Guyana, South America.

Multiple zones of gold mineralization were intersected in each of these holes, most notably, central Wenot Hole 25ODD-150 intersected both 11.48 g/t gold over 10.2 metres and in a separate zone 10.65 g/t gold over 9.0 metres. The remaining 2025 drilling results are expected shortly.

A total of 79 diamond drill holes (35,300m) were completed on the Omai project in 2025. Of these, 31 were drilled at Wenot subsequent to the August 2025 Mineral Resource Estimate (MRE). These will contribute to an updated MRE that is underway and is expected to be completed in Q1. Drilling resumed last week employing three of the five rigs that are currently on the property. Initially, drilling will continue at Wenot to focus on areas that have the potential to further expand the resource, including follow up on the new high-grade zone discovered at the east end of Wenot (11.07 g/t Au over 14.7m) in late 2025. Drilling will also continue to test between depths of -300 to -450-metre depths, where many areas are still open, as well as starting drilling to upgrade the large Wenot Inferred MRE.

Highlights from recent drilling include Hole 25ODD-150: 11.48 g/t Au over 10.2m, including 28.54 g/t Au over 4.0m; 10.65 g/t Au over 9.0m, including 23.79 g/t Au over 3.8m and 3.37 g/t Au over 8.4m, including 7.45 g/t Au over 3.0m.

Hole 25ODD-145 returned 4.79 g/t Au over 14.5m, including 32.06 g/t over 2.0m, 2.61 g/t Au over 19.2m and 2.26 g/t Au over 9.5m.

Hole 25ODD-145W2 returned 15.74 g/t Au over 1.0m and 4.24 g/t Au over 9.3m, including 12.25 g/t Au over 2.2m.

Hole 25ODD-148 returned 2.22 g/t Au over 12.5m, including 3.69 g/t Au over 3.1m.

Hole 25ODD-149 returned 2.28 g/t Au over 19.7m, including 4.87 g/t Au over 8.7m and 4.63 g/t Au over 8.6m, including 15.95 g/t Au over 2.4m.

Omai Gold Mines is focused on rapidly expanding the two orogenic gold deposits at its 100%-owned Omai Gold Project in Guyana, South America. The company has established the Omai Gold Project as one of the fastest growing and well-endowed gold camps in the prolific Guiana Shield. In August 2025, the company announced a 96% increase to the Wenot Gold Deposit NI 43-101 Mineral Resource Estimate¹ (MRE) to 970,000 ounces of gold (Indicated) averaging 1.46 g/t Au, contained in 20.7 Mt and 3,717,000 ounces of 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. Three drills have commenced the 2026 drill program: at Wenot the focus is 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 MRE and PEA are planned for H1 2026 to include the expanded Wenot open pit deposit and the adjacent Gilt Creek underground deposit. The Omai Gold Mine produced over 3.7 million ounces of gold from 1993 to 2005, ceasing operations when gold was below US$400/oz. The Omai site significantly benefits from existing infrastructure, including an on-site airstrip, and is connected by road to the two largest cities in Guyana, Georgetown and Linden.