Mr. Gerard Bond reports

OCEANAGOLD RELEASES 2025 SUSTAINABILITY REPORT

Oceanagold Corp. has published its annual sustainability report for the year ended Dec 31, 2025. The report outlines Oceanagold's sustainability performance and progress across safety, health, people and culture, community and social performance, environment, tailings management, and climate (all financial figures in United States dollars unless otherwise stated).

Gerard Bond, president and chief executive officer of Oceanagold, said: "In 2025, we delivered another year of meaningful progress across our sustainability priorities, while continuing to safely and responsibly deliver gold production. Embedding sustainability into how we operate is fundamental to creating and protecting value for all stakeholders. Significant improvements in our safety performance, strong community and economic contributions, and progress on decarbonization reflect the focus and commitment of our teams across the business."

2025 sustainability performance highlights:

• Maintained MSCI AA ESG (environmental, social and governance) rating for the third consecutive year;
• No workplace fatalities or life-altering injuries during the year, and a 36-per-cent reduction in total recordable injury frequency rate compared with 2024;
• Supported local economies and community development, spending $110-million with nearly 800 local suppliers while contributing $10-million to community projects;
• 38-per-cent reduction in GHG (greenhouse gas) emissions (1) over the last three years, with an aspiration of 30-per-cent absolute reduction in greenhouse gas emissions by 2030;
• Averaging 60 per cent water reused or recycled across operating mine sites, and an updated water performance standard and site water management plans for all operating mine sites.

The company appointed David Bickerton as executive vice-president and chief sustainability officer (CSO) effective April 1, 2026. Mr. Bickerton brings a deep understanding of Oceanagold's business, culture and company objectives to this critical role. He joined Oceanagold in 2011 and has held a broad range of roles across the business, most recently as asset president of the Didipio mine in the Philippines.

(1) Oceanagold sources the equivalent of 100 per cent renewable energy, through the purchase of renewable energy certificates (RECs).

This year is the release of the company's first annual mandatory IFRS S2 climate-related disclosure, which provides information about the company's approach and annual progress of climate-related governance, strategy, risk management and metrics, and targets.

About Oceanagold Corp.

Oceanagold is a global intermediate gold and copper producer committed to safely and responsibly maximizing the generation of free cash flow from its operations and delivering strong returns for its shareholders. The company has a portfolio of four operating mines: the wholly owned Haile gold mine in the United States; the wholly owned Macraes and Waihi operations in New Zealand; and the 80-per-cent-owned Didipio mine in the Philippines.