Omai Gold Drills 708m Averaging 1.06 g/t Au from 365m at Gilt Creek Deposit Including Multiple Higher Grade Intervals

The latest news release dated December 18, 2025, reports assay results from the second hole (25ODD-122W) drilled into the Gilt Creek deposit at the Omai Gold Project in Guyana. The headline result is a massive 708.1-meter intercept averaging 1.06 g/t Au starting from 364.9 meters depth. This interval is hosted within the Gilt Creek quartz-diorite intrusive stock. Within this broad 708-meter zone, the company identified several higher-grade intervals, including 4.88 g/t Au over 7 meters and 2.54 g/t Au over 17.1 meters.

This specific hole also successfully intersected the Wenot deposit at depth (reported previously in November), proving that the Wenot Shear Corridor continues at least 700 meters below the current resource limits. The company confirms that the structural and metallurgical data from this hole will be utilized in an updated Preliminary Economic Assessment (PEA) expected in the first half of 2026.

The impact of this news is Material - Positive. While the company already had a significant resource (6.5 Moz Au total), this 708-meter intercept is a "proof of concept" for the scale of the Gilt Creek intrusive. - Scale Validation: Intersecting gold mineralization over 700 meters in a single hole confirms that the intrusive body is mineralized throughout, rather than just in isolated pockets. This significantly reduces geological risk for the upcoming PEA. - Resource Continuity: The results demonstrate robust continuity. The Gilt Creek deposit was previously modeled largely between 300m and 600m depth; this hole shows mineralization persisting to over 1,000m. - Project Synergy: Proving that both the Gilt Creek (intrusive) and Wenot (shear-hosted) deposits extend to these depths allows for a much larger, multi-decade mine plan. The inclusion of Gilt Creek in the next PEA is expected to significantly increase the annual production profile compared to the 2024 "open-pit only" study. - Market Sentiment: The company has successfully executed its 2025 drilling goals, exceeding 35,000 meters of drilling. This reliability in meeting exploration targets maintains investor confidence.

Omai Gold Mines Corp. is focused on the redevelopment of the past-producing Omai Gold Mine in Guyana. The project was a major producer for Cambior (1993-2005), yielding 3.7 Moz Au. Omai's current strategy involves expanding two distinct deposits: - Wenot: A shear-hosted deposit along a 2.5km strike, primarily targeted for open-pit expansion. - Gilt Creek: An intrusive-hosted deposit located below the historical Fennell pit, targeted for underground mining. The current MRE (August 2025) stands at 2.1 Moz (Indicated) and 4.4 Moz (Inferred), making it one of the largest gold projects in the Guiana Shield.