Omai Gold Mobilizes Sixth Drill to Advance Exploration Targets

(TSXV:OMG, OTCQB:OMGGF) Omai Gold Mines Corp. announced the mobilization of a sixth diamond drill to the Omai Project site in Guyana, focusing on exploration targets. An initial 5,000 metre drill program is planned, with the first target being the BBH area, where an 8-hole program will be conducted. The BBH target is a broad area extending along a strike of approximately 600 metres, defined by trenches, shallow drill holes, and historical data, with numerous occurrences of significant gold mineralization, including high-grade gold at surface. Highlights from 2022 trenching include Trench OTR-03, where 14 samples were collected: six assayed between 1–3 g/t Au, one assayed 8.35 g/t Au, and three assayed over 15 g/t Au (including one grading 24.3 g/t Au). Trench OTR-02, 300 metres east of OTR-03, had all eleven samples assaying over 1.5 g/t Au, half over 6.0 g/t Au, three over 10 g/t Au, with the highest at 21.3 g/t Au. Trenching in 2022 also exposed old underground workings estimated from 1948, showing narrow high-grade veins in saprolite traced into fresh rock. Initial drilling in 2021 intersected 1.7 g/t Au over 7.5m and 3.15 g/t Au over 3.0m in hole 21ODD-019; a nearby historic hole intersected 1.9 g/t Au over 3.0m, 2.14 g/t Au over 9.0m, and 0.98 g/t Au over 3.0m. In late 2025, seven wide-spaced drill holes tested the 600-m BBH trend, with all but one intersecting gold mineralization. The highlight was 20.33 g/t Au over 5.3m, including 35.61 g/t Au over 3.0m at a vertical depth of 50m in hole 131. Drilling programs are being planned on additional exploration targets on the property. The company completed a Preliminary Economic Assessment (PEA) on August 19, 2026, covering the Wenot open pit and Gilt underground deposits. The PEA supports a mine plan to produce 6.3 million ounces of gold over an 18-year mine life, with average annual production projected at 351,000 ounces. At a $3,600/oz base case, the PEA supports a $4.0 billion net asset value discounted at 5%. The PEA is based on a Mineral Resource Estimate of 2.5 million ounces Indicated averaging 2.04 g/t Au in 38.1 million tonnes and 5.5 million ounces Inferred averaging 1.59 g/t Au in 106.6 million tonnes. Drilling on the 50,000 metre drill program is ongoing with five rigs. Omai Gold Mines Corp. owns 100% of the Omai Gold Project. The project benefits from existing infrastructure, including a cleared site, on-site airstrip, tailings facility, known metallurgy, and road connections to Georgetown and Linden. Elaine Ellingham, P.Geo., President & CEO, is the Qualified Person for the technical information in this release.

Omai Gold Engages Adelaide Capital for Social Media Services

(TSXV:OMG) (OTCQB:OMGGF) Omai Gold Mines Corp. has entered into a social media services agreement with Adelaide Capital Markets Inc. to provide investor social media services. The agreement has an initial term of six months, commencing on September 16, 2026, and may be extended by mutual consent of both parties. Under the agreement, Omai Gold Mines Corp. will pay Adelaide Capital a monthly fee of C$3,000, plus applicable taxes. Adelaide Capital is principally owned by Deborah Honig and is an arm's length party to Omai Gold Mines Corp. As of the date of the news release, neither Adelaide Capital nor Deborah Honig personally owns any common shares or other securities of Omai Gold Mines Corp. No stock options or other securities of Omai Gold Mines Corp. are being granted to Adelaide Capital or its principals in connection with the agreement. The agreement remains subject to the approval of the TSX Venture Exchange. Omai Gold Mines Corp. is focused on rapidly advancing the two orogenic gold deposits at its 100%-owned Omai Gold Project in Guyana, South America. The company describes the Omai Gold Project as one of the fastest growing and well-endowed gold projects in the Guiana Shield. Elaine Ellingham, P.Geo., is President & CEO of Omai Gold Mines Corp.