Corporate Presentation September 2014 Cautionary Notes Cautionary - PowerPoint PPT Presentation

Corporate Presentation September 2014

Cautionary Notes Cautionary Notes - Information Purposes Only The information contained in this presentation is provided by OceanaGold Corporation (“OGC”) for informational purposes only and does not constitute an offer to issue or arrange to issue, or the solicitation of an offer to issue, securities of OGC or other financial products. The information contained herein is not investment or financial product advice and has been prepared without taking into account the investment objectives, financial situation or particular needs of any particular person. The views, opinions and advice provided in this presentation reflect those of the individual presenters only. No representation or warranty, express or implied, is made as to the fairness, accuracy, completeness or correctness of the information, opinions and conclusion contained in this presentation. To the maximum extent permitted by law, none of OGC or any of its directors, officers, employees or agents accepts any liability, including, without limitation, any liability arising out of fault or negligence, for any loss arising from the use of the information contained in this presentation. Furthermore, this presentation does not constitute an offer of shares for sale in the United States or to any person that is, or is acting for the account or benefit of, any U.S. person (as defined in Regulation S under the United States Securities Act of 1933, as amended (the "Securities Act")) ("U.S. Person"), or in any other jurisdiction in which such an offer would be illegal. OGC’s shares h ave not been and will not be registered under the Securities Act. Technical Disclosure The Mineral Resources for Didipio and Blackwater (within the Reefton Goldfield) were prepared by, or under the supervision of, J. G. Moore, whilst the Mineral Resources for Macraes and Reefton were prepared by S. Doyle. The Mineral Reserves for Didipio were prepared under the supervision of R.Corbett, while the Mineral Reserves for Macraes and Reefton were prepared by, or under the supervision of, K Madambi. C. Bautista is Exploration Manager for the Philippines. S. Doyle, K. Madambi, and J. G. Moore are Members and Chartered professionals with the Australasian Institute of Mining and Metallurgy and each is a “qualified person” for the purposes of NI 43 -101. R. Corbett is a Registered Professional Engineer (Ontario) and is a “qualified person” for the purposes of NI 43 - 101. C. Bautista is a member of the AIG and is a “qualified person” for the purpo ses of NI 43-101. Messrs Moore, Doyle, Corbett, Madambi and Bautista have sufficient experience, which is relevant to the style of mineralisation and type of deposits under consideration, and to the activities which they are undertaking, to qualify as Competent Persons as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves” (“JORC Code”). The resource estimates for the El Dorado Project were prepared by Mr. Steven Ristorcelli, C.P.G., of Mine Development Associates, Reno, Nevada (who is an independent Qualified Person as defined in NI 43-101) and conforms to current CIM Standards on Mineral Resources and Reserves. For further scientific and technical information (including disclosure regarding mineral resources and mineral reserves) relating to the Reefton Project, the Macraes Project and the Didipio Project please refer to the NI 43-101 compliant technical reports available at sedar.com und er the Company’s name. For further scientific and technical information (including disclosure regarding mineral resources and mineral reserves) relating to the El Salvador Project please refer to the reports publicly available on SEDAR (www.sedar.com) prepared for Pacific Rim. 2 OceanaGold Corporation Innovation Performance Growth

OceanaGold Today Emerging multinational gold and copper producer with strong free cash flow Didipio – Philippines Macraes – New Zealand Reefton – New Zealand Stock Exchanges Shareholder Geo. Breakdown 1 TSX, ASX, NZX Ticker: “OGC” Australia & NZ 19% Market Capitalisation 2 North C$790 America 61% Europe 90-Day Average Daily Liquidity 2 18% 2.6m shares Asia Shares Outstanding 2 2% 301m 1. Internal Report as at 31 Jul 2014 2. Metrics as at 11 Sep 2014 3 OceanaGold Corporation Innovation Performance Growth

OceanaGold Value Proposition MANAGEMENT Commitment Experience SOCIAL STRATEGY LICENSE Discipline Execution GROWTH OPERATIONS Free Cash Flow 4 OceanaGold Corporation Innovation Performance Growth

Experienced Management Team Mick Wilkes Managing Director & Chief Executive Officer • Over 30 years industry experience • Developed major projects in Australia & SE Asia • Strong Operations background in hard rock mining • Strong in Community and Government relations • Extensive SE Asian experience Michael Holmes Mark Chamberlain Chief Operating Officer Chief Financial Officer • >30 years financial experience • Mining engineer with over 28 years of experience • Capital markets working in Australia and Argentina • Financial and risk management expertise • Broad operational experience in underground and • 17 years industry experience including senior open pit gold, copper, lead, zinc and nickel mines finance roles at Newcrest Mining and Western • Recent experience with Xstrata Copper Mining Corp. Mark Cadzow Liang Tang Chief Development Officer Company Secretary & Corporate Counsel • Metallurgist with >30 years industry experience • Practising lawyer, joined OGC’s legal and company • Mineral processing secretarial team in 2009 • Precious metals and Sulphide minerals • Broad range legal experience including corporate, • Joined predecessor company in 1991 and has held equity and debt financing and general commercial law various technical and operations responsibilities Darren Klinck Yuwen Ma Head of Business Development Head of Human Resources • International capital markets experience in metals • 24 years Human Resources experience and mining • Industry experience includes Eldorado Gold and • Appointed VP Investor Relations in 2007 and Sino Gold Mining Ltd current role in 2011 • Significant Asian experience with multinational • Responsible for identifying & evaluating external corporations growth opportunities; & capital markets interface 5 OceanaGold Corporation Innovation Performance Growth

OceanaGold Vision & Strategy We will be a mid-tier, multinational gold producer delivering superior shareholder returns in a safe and sustainable manner by developing and operating high quality assets. We will be the partner, employer and mining company of choice. Commitment to Optimise mines Sustainability Operating efficiently Maximising Investing in CORE value from high quality existing VALUES assets assets Spending judiciously – Strengthen Strategic capital discipline balance sheet capital allocation 6 OceanaGold Corporation Innovation Performance Growth

Strategy on Growth Invest in high quality organic and external value add opportunities Effective use of capital through investment in first and second quartile assets Leveraging experience and capabilities Focus on Asia-Pacific and Americas regions Clear definition of investment criteria Leveraging in-house expertise to identify and evaluate new opportunities Accretive investment to increase shareholder wealth Focus on accretive transactions that increase shareholder wealth 7 OceanaGold Corporation Innovation Performance Growth

First Half 2014 Results Summary 2014 YTD Jun 2014 Q2 2014 Guidance New New Combined Didipio Company Didipio Company Zealand Zealand Gold 275,000 to oz 45,266 102,133 147,399 14,786 46,045 60,831 production 305,000 Copper 21,000 to – – t 11,185 11,185 4,706 4,706 production 24,000 – Gold sales oz 54,010 112,334 166,344 17,746 54,548 72,294 – – – 12,925 12,925 5,173 5,173 Copper sales t Cash costs $/oz 400 to 450 1 (412) 1 843 435 1 (254) 1 1,114 778 1 All-In 750 to 850 1 (150) 1 779 1 Sustaining $/oz 1,226 Costs 2 1.Net of by-product credits 2.All- in Sustaining Costs (“AISC”) based on WGC methodology; expansionary and growth capital expenditures are excluded from the AI SC 8 OceanaGold Corporation Innovation Performance Growth

2014 Guidance On track to meet full year guidance New Zealand Didipio Consolidated Combined Gold Production 85,000 – 95,000 190,000 – 210,000 275,000 – 305,000 Guidance (ounces) Copper Production 21,000 – 24,000 – 21,000 – 24,000 Guidance (tonnes) Cash Cost Guidance ($725) – ($650) 1 $840 – $925 2 $400 – $450 1,2 (per ounce) All-In Sustaining Costs 3 ($240) – ($210) 1 $1,170 – $1,290 2 $750 – $850 1,2 (per ounce) 1.Costs at Didipio are NEGATIVE net of copper by-product credits and assumes copper price of $3.20/lb 2.Assumes NZD/USD exchange rate of 0.80 3.All-in Sustaining Costs based on WGC methodology. expansionary and growth capital expenditures are excluded from the AISC 9 OceanaGold Corporation Innovation Performance Growth