#Canada #Vancouver #OceanaGold #Haile #Didipio

OceanaGold's Annual Information and Technical Reports Highlight Key Operations

OceanaGold Corporation, listed on the TSX as OGC and OTCQX as OCANF, has recently submitted its Annual Information Form alongside updated technical reports for three of its significant mining operations: Haile in the United States, Macraes in New Zealand, and Didipio in the Philippines. Each of these reports carries an effective date of December 31, 2025.

These technical documents provide a comprehensive overview of the expected gold production and a breakdown of associated costs, affirming the company's position to maintain substantial free cash flow, even in the context of fluctuating gold prices. Based on the outlined mine plans, these reports leverage data solely from the company’s 2025 Mineral Reserves, which were estimated using a price of $2,200 per ounce of gold. Importantly, the projections do not factor in inferred mineral resources or potential exploration increases.

The mineral reserves and resources incorporated in these technical findings stem from OceanaGold's earlier release detailing mineral reserves and resources for the year ending 2025. Furthermore, the company’s guidance for 2026, as presented in their Fourth Quarter and Full-Year 2025 Management's Discussion and Analysis released in February 2026, remains unchanged. This consistency indicates a stable outlook in their operational performance moving forward.

Accessibility of Reports

Investors and interested stakeholders can easily access the Annual Information Form and technical reports through SEDAR+ at www.sedarplus.ca or visit OceanaGold's official website at www.oceanagold.com. This transparency is part of OceanaGold’s commitment to responsible corporate governance and investor relations.

About OceanaGold

OceanaGold is a notable player in the global gold and copper production market, dedicated to maximizing free cash flow safely and responsibly through its mining operations. The company operates four mines, ensuring robust operations across its diverse geographic portfolio, which includes:

• - The wholly owned Haile Gold Mine in the United States
• - The Macraes and Waihi operations, also wholly owned, in New Zealand
• - The Didipio Mine, in which OceanaGold holds an 80% stake, situated in the Philippines.

Through its disciplined approach and experienced management team, OceanaGold aims to continue delivering strong returns for its shareholders.

Qualified Professional Review

Each of the technical reports was reviewed and approved by qualified individuals under National Instrument 43-101. Greg Hollett, Group Head of Mining Engineering, ensured accuracy for the Haile reports. Knowell Madambi, Manager of Technical Services, provided expertise for the Macraes operations, while Phillip Jones, Group Head of Underground Mining, reviewed data concerning Didipio's findings. This rigorous review process reinforces the reliability of the company's reported figures and strategic outlook.

Looking Ahead

As OceanaGold anticipates future advancements and production estimates, it remains essential to recognize the inherent risks and uncertainties in the mining sector. Forward-looking statements, as outlined in their reports, acknowledge factors such as market volatility, regulatory hurdles, and operational risks that may impact performance outcomes.

In summary, OceanaGold's proactive measures through well-prepared technical reports not only underline its operational excellence but also underscore the company's ongoing efforts to remain transparent with its stakeholders while reinforcing its market position in the competitive mining industry.