OceanaGold Reports Exceptional High-Grade Drill Results at Wharekirauponga and Progress on Waihi North Project

OceanaGold Reports Exceptional High-Grade Drill Results at Wharekirauponga and Progress on Waihi North Project

Canada NewsWire

VANCOUVER, BC , Sept. 24, 2026 /CNW/ -- OceanaGold Corporation (TSX: OGC) (NYSE: OGC) ("OceanaGold" or the "Company") announces results from 16 new drill holes from the ongoing exploration and resource conversion program at Wharekirauponga, located approximately 10 kilometres ("km") north of the Company's Waihi Operation in New Zealand.

The Company is also providing an update on the Waihi North Project, which continues to progress to plan, and on the evaluation of several value-enhancing technical studies which are expected to be included in the upcoming Waihi District technical report planned for release in January 2027. These include a potential processing plant expansion to 1.2 million tonnes per annum ("Mtpa") that would support the continuation of mining at the Martha Underground mine ("MUG") concurrent with mining the Wharekirauponga Underground mine ("WUG") once it is in production in 2032.

Wharekirauponga Drilling Highlights (estimated true width):

6.3 m @ 97.2 g/t Au from 481.5 m, East Graben ("EG") Vein (WKP146C)

8.5 m @ 41.5 g/t Au from 399.0 m, EG Vein (WKP150)

9.6 m @ 18.5 g/t Au from 401.0 m, EG Hanging Wall ("HW") Veins (WKP146A)

6.6 m @ 24.0 g/t Au from 403.4 m, incl. 1.2 m @ 107.7 g/t Au , EG HW Veins (WKP146C)

5.9 m @ 25.9 g/t Au from 485.6 m, EG Vein (WKP146B)

4.2 m @ 32.4 g/t Au from 602.9 m, EG Vein (WKP147A)

Gerard Bond, President and CEO of OceanaGold, said "Drill results from Wharekirauponga continue to demonstrate the exceptional grade and continuity of the EG Vein zone, and include some of the highest-grade intercepts reported to date. These results confirm further continuity and up-dip extension of the southern high-grade zone which currently lies outside of reported reserves, the