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(All dollar amounts are in United States dollars, unless otherwise stated) Highlights of Omai Project Preliminary Economic Assessment 6.327 million ounces of gold ("Au") projected life-of-mine ("LOM") payable production over 18 years $4.0 billion after-tax net present value at a 5% discount rate at base case $3,600/oz gold, increasing to $5.5 billion at $4,200/oz gold 24% after-tax internal rate of return at $3,600/oz gold, increasing to 30% at $4,200/oz gold $1.427 billion initial capital and sustaining and growth capital of $928 million over LOM 4.1 year payback at $3,600/oz gold, decreasing to 3.4 years at $4,200/oz Au $1,501/oz gold average cash operating costs and all-in sustaining costs ("AISC")1 of $1,608/oz $8.093 billion cumulative after-tax cash flows2 over 18 years 351,488 oz Au per year projected average production over LOM, with peak year gold production reaching 435,667 ounces 1.35 g/t Au average head grade and 93% process recovery 5.9:1 average strip ratio for the open pit LOM Toronto, Ontario--(Newsfile Corp. - August 19, 2026) - Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) ("Omai Gold" or the "Company") is pleased to announce positive results from its Preliminary Economic Assessment (the "PEA") for its 100%-owned Omai Property, in Guyana, South America. The PEA mine plan incorporates both the Wenot open pit deposit and the adjacent Gilt underground deposit.
TORONTO, July 21, 2026 (GLOBE NEWSWIRE) -- Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) (“Omai Gold” or the “Company”) is pleased to announce that Elaine Ellingham, President and CEO, will present live at the Precious Metals & Critical Minerals Virtual Investor Conference hosted by VirtualInvestorConferences.com, on July 23rd, 2026.
Toronto, Ontario--(Newsfile Corp. - June 24, 2026) - Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) ("Omai Gold" or the "Company") is pleased to announce assay results from six additional diamond drill holes from the ongoing 50,000m drilling program at its 100% owned Omai Gold Project in Guyana, South America. The Omai Project continues to deliver impressive results.
Toronto, Ontario--(Newsfile Corp. - June 22, 2026) - Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) ("Omai Gold" or the "Company") is pleased to announce results from its first phase of metallurgical testwork on the Wenot and Gilt deposits at its 100% owned Omai Gold Project in Guyana, South America. Highlights Omai's Wenot and Gilt orogenic gold deposits are responsive to reliable, industrially proven processing technologies High gold extraction was achieved from testwork with 93% gold ("Au") extraction at 1.0 g/t Au to 95% Au extraction at 3.2 g/t Au, from a material grind size of 80% passing 75 microns Gold dissolution rates were rapid with a 32-hour retention time determined as optimal Both Wenot and Gilt deposit mineralogies are clean with no deleterious components (no organic carbon, tellurides, or antimony) and with very low soluble copper, lead or zinc content Elaine Ellingham, CEO, commented, "The results from this first phase of metallurgical testing are very favourable, and consistent with the historical production results.
Toronto, Ontario--(Newsfile Corp. - June 1, 2026) - Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) ("Omai Gold" or the "Company") is pleased to announce assay results from eight additional diamond drill holes and four related wedged holes, from the current 50,000m drilling program at its 100% owned Omai Gold Project in Guyana, South America. Five rigs continue drilling at Omai.
Toronto, Ontario--(Newsfile Corp. - 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.
Toronto, Ontario--(Newsfile Corp. - April 14, 2026) - Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) ("Omai Gold" or the "Company") is pleased to announce an updated Mineral Resource Estimate ("MRE") on its 100%-owned Omai Gold Property in Guyana. The MRE includes expansions to both the Wenot Deposit and Gilt Deposit.
Toronto, Ontario--(Newsfile Corp. - March 26, 2026) - Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) ("Omai Gold" or the "Company") is pleased to announce assay results from eight additional drill holes from the recent drill program at its 100% owned Omai Gold Project in Guyana, South America. Five of the eight holes were collared in West Wenot, two in Central Wenot and one at the east end of the Wenot deposit.
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