OceanaGold Announces New Board Member

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MELBOURNE, Aug. 30, 2019 - OceanaGold Corp. (TSX: OGC) (ASX: OGC) (the "Company") announces the appointment of Catherine Gignac to the Board of Directors (the "Board") as a Non-Executive Director effective 30 August 2019.

Ms. Gignac has more than 30 years of capital markets experience, including an extensive career as a mining equity research analyst with leading global brokerage firms. She spent her early working years as a geologist and currently serves as an independent non-executive director and chair of the reserves oversight committee of Cameco Corporation.

She also serves as chair of the board of Women in Mining Canada and is a member of the Canadian Securities Administrators' mining technical monitoring and advisory committee. She is an active member of the Institute of Corporate Directors, the Mineral Resource Analyst Group, the Canadian Institute of Mining & Metallurgy, and the Prospectors and Developers Association of Canada (PDAC). Previously, Ms. Gignac served as chair of Corvus Gold Inc., from 2014 to 2019 and held various other director roles with public companies since 2011. From 2011 to 2015, she was the principal of Catherine Gignac & Associates.

Ms. Gignac earned a Bachelor of Science Honours degree in Geology from McMaster University and an ICD.D designation from the University of Toronto's Rotman School of Management.

Ian Reid, Chairman of OceanaGold's Board of Directors said, "We welcome Catherine to the OceanaGold Board of Directors at a time where we have significant organic growth opportunities that complement our suite of high quality assets. Catherine's significant experience in capital markets, the mining industry and strong technical background will be an invaluable asset to the Company and the Board as we advance the Company to the next phase of its growth."

About OceanaGold

OceanaGold Corp. is a mid-tier, high-margin, multinational gold producer with assets located in the Philippines, New Zealand and the United States. The Company's assets encompass the Didipio Gold-Copper Mine located on the island of Luzon in the Philippines. On the North Island of New Zealand, the Company operates the high-grade Waihi Gold Mine while on the South Island of New Zealand, the Company operates the largest gold mine in the country at the Macraes Goldfield which is made up of a series of open pit mines and the Frasers underground mine. In the United States, the Company operates the Haile Gold Mine, a top-tier, long-life, high-margin asset located in South Carolina. OceanaGold also has a significant pipeline of organic growth and exploration opportunities in the Americas and Asia-Pacific regions.

OceanaGold has operated sustainably since 1990 with a proven track-record for environmental management and community and social engagement. The Company has a strong social license to operate and works collaboratively with its valued stakeholders to identify and invest in social programs that are designed to build capacity and not dependency.

In 2019, the Company expects to produce between 500,000 to 550,000 ounces of gold and 14,000 to 15,000 tonnes of copper at All-In Sustaining Costs ranging between $850 and $900 per ounce sold.

Cautionary Statement for Public Release

Certain information contained in this public release may be deemed "forward-looking" within the meaning of applicable securities laws. Forward-looking statements and information relate to future performance and reflect the Company's expectations regarding the generation of free cash flow, execution of business strategy, future growth, future production, estimated costs, results of operations, business prospects and opportunities of OceanaGold Corp. and its related subsidiaries. Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always, using words or phrases such as "expects" or "does not expect", "is expected", "anticipates" or "does not anticipate", "plans", "estimates" or "intends", or stating that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved) are not statements of historical fact and may be forward-looking statements. Forward-looking statements are subject to a variety of risks and uncertainties which could cause actual events or results to differ materially from those expressed in the forward-looking statements and information. They include, among others, the accuracy of mineral reserve and resource estimates and related assumptions, inherent operating risks, sovereign risks, risk of suspension and those risk factors identified in the Company's most recent Annual Information Form prepared and filed with securities regulators which is available on SEDAR at www.sedar.com under the Company's name. There are no assurances the Company can fulfil forward-looking statements and information. Such forward-looking statements and information are only predictions based on current information available to management as of the date that such predictions are made; actual events or results may differ materially because of risks facing the Company, some of which are beyond the Company's control.  Although the Company believes that any forward-looking statements and information contained in this press release is based on reasonable assumptions, readers cannot be assured that actual outcomes or results will be consistent with such statements. Accordingly, readers should not place undue reliance on forward-looking statements and information. The Company expressly disclaims any intention or obligation to update or revise any forward-looking statements and information, whether because of new information, events or otherwise, except as required by applicable securities laws. The information contained in this release is not investment or financial product advice.

SOURCE OceanaGold Corp.