OceanaGold Announces Acquisition of Ausgold

VANCOUVER , Aug. 17, 2026 /PRNewswire/ -- OceanaGold Corporation (TSX: OGC) (NYSE: OGC ) ("OceanaGold" or the "Company") is pleased to announce it has entered into a definitive scheme implementation deed (the "SID") to acquire 100% of the issued shares of Ausgold Limited (ASX: AUC) ("Ausgold"), the owner of the Katanning Gold Project ("Katanning") in Western Australia, by way of an Australian court-approved scheme of arrangement (the "Scheme" or the "Transaction"). Under the terms of the Transaction, Ausgold shareholders will receive 0.03365 common shares of OceanaGold for each share of Ausgold held ("Scheme Consideration"). The Scheme Consideration implies a total offer value of A$1.36 per Ausgold share, implying a total transaction equity value of approximately A$776M (US$549M) 1 . Ausgold shareholders also have the opportunity to elect to receive the Scheme Consideration value in cash ("Cash Alternative"), subject to scale-back based on a maximum available cash pool for the Transaction of A$194M (US$137M) 1 . Upon completion of the Transaction, it is expected that Ausgold shareholders will own approximately 6% to 8% of OceanaGold. The Ausgold Board has unanimously recommended that Ausgold shareholders vote in favour of the Scheme and intend to vote all shares held by them (approximately 1.4%) in favour of the Scheme. Ausgold major shareholder Dundee Corporation, representing approximately 7.7% of ownership, has also confirmed its intention to vote in favour of the Scheme. 2 Click here for a video message from President and Chief Executive Officer of OceanaGold, Gerard Bond: Video OceanaGold will hold a conference call on August 17, 2026 at 8 am Eastern Time / 5 am Pacific Time to discuss the Transaction. Dial-in details are provided below. Gerard Bond, President and Chief Executive Officer of OceanaGold, said: "The acquisition of Ausgold adds an advanced, high-quality, low-capital, open-pit development asset to our portfolio at an attractive valuation. The Katanning Gold Project will be our fifth asset, located in one of the world's premier mining jurisdictions and is a natural fit with our proven development and operating capabilities. Our projected free cash flow generation and strong balance sheet give us the ability to fund the development of Katanning, advance our existing growth pipeline including the Waihi North Project, while continuing to deliver meaningful capital returns to shareholders. "This marks our first acquisition in Australia, and we are excited to build on the great work done by the Ausgold team to further optimize the development of the Katanning Gold Project for the benefit of both OceanaGold and Ausgold shareholders. We look forward to welcoming Ausgold's shareholders and employees to OceanaGold and working with the stakeholders of the Katanning Gold Project." John Dorward, Executive Chairman of Ausgold, said: "This transaction delivers Ausgold shareholders a compelling upfront premium with the opportunity to retain exposure to the value we expect to unlock at Katanning as part of a larger, diversified and highly cash-generative gold producer. OceanaGold's financial strength, technical depth and operating track record significantly de-risk the funding and development of Katanning, while our shareholders gain immediate diversification and exposure to a high-quality growth profile which will include Katanning and the world-class Waihi North Project. The Ausgold Board unanimously recommends the OceanaGold proposal and we look forward to working with OceanaGold to complete this transaction and progress Katanning towards production." Strategic Rationale and Benefits to OceanaGold Shareholders The Transaction is expected to deliver significant benefits for OceanaGold shareholders, which includes Ausgold shareholders post-closing: Adds a high-quality development asset in a Tier-1 mining jurisdiction : the acquisition of Katanning complements OceanaGold's existing operations in the USA, New Zealand and the Ph...