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Oceanagold Receives Permits FOR the Martha Underground and MINE Life Extension at Waihi

Permits & Approvals

MEDIA RELEASE

5 February 2019

OCEANAGOLD RECEIVES PERMITS FOR THE MARTHA UNDERGROUND AND

MINE LIFE EXTENSION AT WAIHI

(MELBOURNE) OceanaGold Corporation (TSX: OGC | ASX: OGC) (the “Company”) is pleased to announce

that the statutory appeal period related to the Martha Underground Project (“Martha Underground” or the

“Project”) permitting process has concluded with no appeals filed. As a result, the Project has received its

resource consents (permits) to commence operations.

Mick Wilkes, President and CEO said, “ Receipt of the permits at the Martha Underground represents a

tremendous outcome that will benefit the Company, its shareholders, the town of Waihi and New Zealand.

The Waihi operation has had a long, rich history of operating to the highest of environmental and social

standards globally while contributing significant socio -economic benefits to Waihi and the country. We are

excited to be granted the consents and for the opportunity to continue over 140 years of gold mining history

at Waihi.”

The Company has started preparing management plans and detailed mine designs to allow mining

operations to begin, which will include stope and infrastructure development. The Company expects that at

full underground mining rate at Martha , the Waihi operation production would return to more recent historic

levels.

During the ramp-up phase, the Company will continue to drill the Martha Underground targets utilising four

diamond rigs from the two underground drill drives located beneath the Martha Open Pit in order to further

discover and add resources. Based on studies and exploration to-date, the Company has an exploration

target of between five and eight million tonnes grading four to six grams per tonne within the Martha

Underground1. As at August 9, 2018, the Martha Underground hosted a Measured & Indicated (“M&I”)

Resource of 140,000 ounces of gold and an Inferred Resource of approximately 339,000 ounces of gold,

which was based o n only one -third of the planned drilling program. Since this date, the Company has

continued to drill from underground and has budgeted a further 42,000 metres in 2019 to further test the

exploration target.

Mr. Wilkes added, “OceanaGold has been proudly operating in New Zealand since 1990 and the Waihi mine

has been in operation in its current form since 1988 . We have a strong, dedicated and values -driven

workforce that are proud Kiwis making a significant positive impact in their respective communities. New

Zealand is a template for responsible hard rock mining , clearly demonstrated by the success we’ve had at

Macraes, Waihi and Reefton gold mines.”

1 Insufficient exploration work has been conducted to date to define a mineral resource of this magnitude and it is uncertain i f further exploration will result in the delineation

of additional mineral resources. The exploration target is conceptual in nature and is based on the assessment of surface and underground d rilling data collected by the

Company as well as historical and archived geological and mining data from over a century of mining a ctivity at Waihi. If ongoing exploration and consenting is successful,

this could extend underground mining at Waihi.

- ENDS -

For further information please contact:

Investor Relations Media Relations

Sam Pazuki

Tel: +1 416 915 3123

Melissa Bowerman

Tel: +61 459 900 099

[email protected] [email protected]

www.oceanagold.com | Twitter: @OceanaGold

About OceanaGold

OceanaGold Corporation 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 Phil ippines. 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 op en 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 work s

collaboratively with its valued stakeholders to identify and invest in social programs that are designed to build

capacity and not dependency.

In 2018, t he Company produced 533.3k ounces of gold and 15.0k tonnes of copper with All -In Sustaining

Costs of $767 per ounce on gold sales of 532.7k ounces and copper sales of 14.5k tonnes. In 2019, the

Company expects to produce between 500,000 to 550,000 ounces of gold and 14,000 to 1 5,000 tonnes of

copper at All-In Sustaining Costs ranging between $850 and $900 per ounce sold.

Competent/Qualified Person’s Statement

Information (including sampling, analytical and test data) relating to Waihi Mineral Resource and Exploration

Results in this document has been verified by, is based on and fairly represents information compiled by or

prepared under the supervision of Mr Peter Church, a Chartered Professional of the Australasian Institute of

Mining and Metallurgy. Mr Church is an employee of OceanaGold and is not independent for purposes of NI

43-101. Mr Church has sufficient experience that is relevant to the style of mineralisation and type of deposit

under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the

JORC Code and is Qualified Persons for the purposes of the NI 43 -101. Mr Church has reviewed and

approved the scientific and technical information in this announcement, and consents to the inclusion in this

public report of the matters based on their information in the form and context in which it appears.

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 Corporation 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 "exp ects" 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 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 pre dictions based on current information available to management as

of the date that such predictions are made; actual events or results may differ materially as a result of risks

facing the Company, some of which are beyond the Company's control. Although t he 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, read ers 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 as a result of new information, event s or otherwise, except as

required by applicable securities laws. The information contained in this release is not investment or financial

product advice.

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TO US NEWSWIRE SERVICES.