NEWS

OceanaGold Executive Vice President and Chief Sustainability Officer David Bickerton and OGP President and General Manager for External Affairs and Social Performance Atty. Joan Adaci-Cattiling join fellow OceanaGold representatives at the Towards Sustainable Mining (TSM) Excellence Awards on October 27-28, 2026.

Didipio Mine earns two Gold awards and one silver cross-cutting award

OceanaGold (Philippines), Inc. (“OGP” or the “Company”) earned three recognitions at the Towards Sustainable Mining (TSM) Excellence Awards 2026, receiving the Gold Protocol Awards for both Water Stewardship & Watershed Responsibility and Tailings Integrity & Risk Governance Excellence, as well as a Silver Award in the TSM Cross-Cutting category, which evaluates how deeply responsible mining principles are consistently integrated into a company’s leadership, governance, decision-making and long-term organizational practices.

The TSM Excellence Awards are based on the Towards Sustainable Mining framework developed by the Mining Association of Canada, a globally recognized standard that promotes accountability, transparency and continuous improvement across key areas of mining performance. In the Philippines, the awards are organized by the Chamber of Mines of the Philippines.

The Didipio Mine received a perfect score of 5.0 for Tailings Integrity & Risk Governance Excellence, making OGP one of only two mining companies to attain the highest rating.

“These awards affirm how we put responsible mining into practice at OceanaGold Philippines,” said Atty. Joan Adaci-Cattiling, President and General Manager for External Affairs and Social Performance.

“Safe and responsible operations require constant attention to how we manage risk and improve our systems. At the Didipio Mine, we continue to invest in technology and, more importantly, in the capability of our people, particularly in the responsible management of water and mine tailings. We remain committed to learning, improving and making decisions that protect our people, communities and the environment.”

The Gold recognition for tailings management reflects the systems, engineering controls and clear accountabilities established by OGP to support the safe and responsible management of the Didipio Mine’s Tailings Storage Facility (TSF).

OGP continues to strengthen its oversight of the TSF through risk-based management practices, engineering controls and monitoring systems. In 2026, the Company automated key aspects of TSF monitoring, giving Didipio’s engineers near real-time access to monitoring information and automated alerts. These capabilities support the early identification of potential concerns and timely, informed decision-making.

The Gold Award for water stewardship recognizes OGP’s approach to managing and monitoring water as a shared resource. At Didipio, the Company considers the requirements of its operations alongside the long-term interests of its surrounding communities and the environment, supporting the responsible management of water in the area.

The awards were presented during the Mining Philippines 2026 International Conference and Exhibition, held on October 27 and 28, 2026. The two-day event brought together around 300 delegates from government, academe, the mining sector and allied industries.