Toronto, Ontario -- May 12, 2026 - Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) ("Omai Gold" or the "Company") is pleased to announce assay results from seven additional drill holes from the current drill program at its 100% owned Omai Gold Project in Guyana, South America.

Three of the seven holes were collared in Central Wenot, two in East Wenot and one at the western end of the Wenot deposit. One exploration hole was drilled south-southwest of the Wenot pit targeting a magnetic geophysical anomaly. All Wenot drill holes intersected multiple zones of gold mineralization. The objective of these holes and the ongoing 50,000m drill program is to fill gaps within the broader Wenot deposit's new constraining pit, to convert mineralized material into the higher confidence level, and to provide further testing of the limits of the Wenot gold system.

Highlights* from the recent drilling include:
(refer to Table 1 for full assays and downhole depths):

• Hole 26ODD-173
  • 3.49 g/t Au over 16.9m
    • Including 13.21 g/t Au over 1.5m
    • Including 46.68 g/t Au over 0.6m
  • 3.86 g/t Au over 23.8m
    • Including 66.21 g/t Au over 0.8m
    • Including 28.33 g/t Au over 0.9m

• Hole 26ODD-169
  • 2.90 g/t Au over 22.9m
    • Including 9.13 g/t Au over 4.1m
  • 2.64 g/t Au over 19.2m
    • Including 4.90 g/t Au over 8.9m

• Hole 26ODD-171
  • 2.02 g/t Au over 21.5m
    • Including 3.75 g/t Au over 8.7m
  • 2.65 g/t Au over 17.2m
    • Including 14.73 over 2.2m

Elaine Ellingham, President & CEO commented: "The 50,000m drill program at Omai is well underway with five drills turning. Results will continue as we focus on upgrading the large inferred Mineral Resource Estimate ("MRE") at the Wenot deposit to Indicated MRE. At the same time, we will continue to drill certain nearby targets that are either geophysics targets or will further test the extent of Wenot.

We are excited to announce that we will be commencing another deep hole to test the long-term potential at Omai. This time, we are planning a steep hole into our Gilt intrusion-hosted gold deposit to explore its depth potential. Historical drilling reached down to a 965m depth with a single hole, and we are targeting a hole in the 1.2 to 1.5km range, depending on results. Deeper holes can present challenges, however in 2025 the Omai team and our drillers from Orbit Garant were able to drill a 2,014m drill hole that intersected the Wenot deposit at a vertical depth of approximately 1,200m, a full 700m below the known Wenot deposit. These deep holes can provide an indication of the potential at depth and potential for an extended mine life."

Current Drill Results