OceanaGold Corporation

OceanaGold Eyes 1.2 Mtpa Waihi Expansion on High-Grade Drill Hits

Vancouver – September 24, 2026 -- OceanaGold Corporation (TSX: OGC) (NYSE: OGC) reported new drill results from its Wharekirauponga project in New Zealand, including an intercept of 6.3 metres grading 97.2 g/t gold, among the highest-grade results returned to date at the deposit.

Sixteen new holes confirm high-grade continuity at Wharekirauponga's East Graben Vein

The 16 holes, completed since an April 1, 2026 update, targeted the East Graben (EG) Vein and adjacent Hanging Wall (HW) structures. Results included 8.5 m at 41.5 g/t gold from 399.0 metres depth, 9.6 m at 18.5 g/t gold from 401.0 metres, and 6.6 m at 24.0 g/t gold including a 1.2 m section at 107.7 g/t gold. The company said the intercepts extend the southern high-grade zone up-dip and along strike, an area currently outside reported reserves.

OceanaGold CEO Gerard Bond to Retire in April 2027

Vancouver – September 23, 2026 -- OceanaGold Corporation (TSX: OGC) (NYSE: OGC) confirmed that President and CEO Gerard Bond will retire in April 2027, ending a five-year tenure that saw the gold and copper producer post sustained gains in operational and financial performance.

Board Hires Spencer Stuart to Lead Global CEO Search

OceanaGold's Board of Directors has engaged Spencer Stuart, an international executive search firm, to evaluate internal and external candidates for the top role. Bond has agreed to remain CEO through his departure in the second quarter of 2027 and will subsequently serve as Special Advisor to the Board and his successor for a further six months to support the transition.

OceanaGold Files Fast-Track Bid to Extend Macraes Mine Into Late 2030s

Vancouver – September 13, 2026 -- OceanaGold Corporation (TSX: OGC, NYSE: OGC) has lodged an application under New Zealand's Fast-track Approvals Act 2024 to extend the operating life of its Macraes gold mine from the current 2032 reserve horizon into the late 2030s.

OceanaGold targets late-2030s mine life through Phase 4 permitting

The Macraes Phase 4 Project (MP4) application, filed September 9, 2026, covers permitting for the existing reserve mine plan, development of the Southern Pit Innes Mills (SPIM) extension, extensions to the Golden Point Underground (GPUG), and flexibility to add further Mineral Resources to future production. Under New Zealand's 'one-stop shop' fast-track process, OceanaGold expects full permitting by mid-2027, subject to appeals. The company previously used the same mechanism to secure approval for its Waihi North Project in 2025.