OceanaGold Corporation announced the following changes to the Company's Board of Directors. Mr. Michael McMullen has advised the Board of his intention to step down effective from the date of this announcement in order to devote more time to pursue his other business interests. He will be succeeded by Mr. Alan Pangbourne, who will join the Company as an independent non- executive director commencing 1 October 2022.

Mr. Pangbourne has 40 years of experience in global mining operations and is currently President and Chief Executive Officer, as well as Executive Director, of Chesapeake Gold Corp. He was previously a non-executive director and subsequently the President and CEO of Guyana Goldfields, Chief Operating Officer of SSR Mining Inc. and Vice President Projects South America for Kinross Gold Corporation. Mr. Pangbourne also held various senior roles at BHP, including President and Chief Operating Officer of Nickel Americas, Projects Director for BHP's Uranium Division and Project Manager for BHP's Spence copper project in Chile.

He holds a Bachelor of Applied Science (Extractive Metallurgy) and a Graduate Diploma in Mineral Processing from the Western Australian School of Mines.