OceanaGold Provides Notice of Fourth Quarter and Full Year 2024 Results and Conference Call

January 21, 2025 News Release

OceanaGold Provides Notice of Fourth Quarter and Full Year 2024 Results and Conference Call

(VANCOUVER) OceanaGold Corporation (TSX:OGC, OTCQX:OCANF) (“OceanaGold” or the “Company”) will release its operational and financial results for the fourth quarter and year ending December 31, 2024, after market close on Wednesday February 19, 2025. The results will be made available on the Company’s website at www.oceanagold.com.

Senior management will host a conference call / webcast to discuss the results on Thursday February 20, 2025, at 10:00 am Eastern Time.

Webcast Details:

To register, please copy and paste the link into your browser: https://app.webinar.net/xO8eQlPQnKN

Conference Call Details:

Toll-free North America: + 1-888-510-2154 Toronto: +1-437-900-0527 Australia: +61-280-171-385

If you are unable to attend the call, a recording will be made available on the Company’s website.

About OceanaGold

OceanaGold is a growing intermediate gold and copper producer committed to safely and responsibly maximizing the generation of Free Cash Flow from our operations and delivering strong returns for our shareholders. We have a portfolio of four operating mines: the Haile Gold Mine in the United States of America; Didipio Mine in the Philippines; and the Macraes and Waihi operations in New Zealand.

For further information please contact:

Investor Relations:

Rebecca Henare, Vice President, Investor Relations Tel: +1 604-678-4095 [email protected]

www.oceanagold.com