NOT FOR DISSEMINATION OR DISTRIBUTION IN THE UNITED STATES OR TO US PERSONS AND NOT FOR DISTRIBITON TO US NEWSWIRE SERVICE ANNUAL INFORMATION FORM For the year ended 31 December 2018 29 March 2019 www.oceanagold.com ANNUAL INFORMATION FORM For the year ended 31 December 2018 Table of Contents 1 Technical Disclosure ............................................................................................................................... 8 2 Basis of Presentation ............................................................................................................................. 11 3 Currency and Exchange Rates .............................................................................................................. 12 4 Corporate Structure ............................................................................................................................... 13 4.1 OceanaGold Corporation ................................................................................................................ 13 4.2 Intercorporate Relationships ........................................................................................................... 15 5 General Development of the Business ................................................................................................... 16 6 Description of Business ......................................................................................................................... 18 6.1 Business Strategy .......................................................................................................................... 18 6.2 Production and Operations ............................................................................................................. 19 6.3 Resources and Reserves ............................................................................................................... 20 6.4 Gold Market and Price .................................................................................................................... 22 6.5 Employee Relations and Personnel ................................................................................................ 22 6.6 Competition .................................................................................................................................... 22 6.7 Foreign Operations ......................................................................................................................... 22 6.8 Environmental Protection ............................................................................................................... 22 6.9 Reorganisation ............................................................................................................................... 24 6.10 Social and Environmental Policies and Standards .......................................................................... 24 6.11 Emerging Market Operation: Corporate Governance and Internal Controls .................................... 24 7 The Macraes Operations ....................................................................................................................... 27 7.1 Property Description and Location .................................................................................................. 27 7.2 Mineral Permits and Regulatory Matters ......................................................................................... 27 7.3 Environmental Matters .................................................................................................................... 28 7.4 Accessibility, Climate, Local Resources, Infrastructure and Physiography ...................................... 29 7.5 History ............................................................................................................................................ 29 7.6 Geological Setting .......................................................................................................................... 30 7.6.1 Regional and Local Geology.................................................................................................... 30 7.6.2 Deposit Geology ...................................................................................................................... 30 7.6.3 Mineralisation .......................................................................................................................... 31 7.7 Exploration ..................................................................................................................................... 31 7.7.1 Macraes Surface Exploration ................................................................................................... 31 7.7.2 Frasers Underground Exploration ............................................................................................ 32 OceanaGold Corporation 2 ANNUAL INFORMATION FORM For the year ended 31 December 2018 7.7.3 Drilling ..................................................................................................................................... 32 7.7.4 Projects ................................................................................................................................... 32 7.7.5 Sampling, Analysis and Sample Security ................................................................................. 32 7.8 Mining Operations .......................................................................................................................... 34 7.8.1 Open Pit Mining ....................................................................................................................... 35 7.8.2 Underground Mining ................................................................................................................ 35 7.9 Processing and Recovery Operations ............................................................................................ 36 7.10 Infrastructure .................................................................................................................................. 36 8 The Didipio Operation ............................................................................................................................ 37 8.1 Property Description and Location .................................................................................................. 37 8.2 Mineral Permits and Regulatory Matters ......................................................................................... 38 8.2.1 Financial or Technical Assistance Agreement ......................................................................... 38 8.2.2 PDMF and Development/Utilization Work Program ................................................................. 38 8.2.3 Exploration Period ................................................................................................................... 38 8.2.4 Didipio FTAA Requirements .................................................................................................... 39 8.2.5 Third-Party Royalties ............................................................................................................... 39 8.2.6 Recovery of Expenses ............................................................................................................. 40 8.3 Environmental and Community Development Matters .................................................................... 40 8.3.1 Environmental Compliance Certificate (“ECC”) ........................................................................ 40 8.3.2 EPEP and FMR/DP ................................................................................................................. 41 8.3.3 Responsible Mining Recognition ............................................................................................. 41 8.3.4 Social Development and Management Program (SDMP) ........................................................ 42 8.3.5 Community Development Program (CDP) ............................................................................... 42 8.4 Accessibility, Climate, Local Resources, Infrastructure and Physiography ...................................... 43 8.4.1 Topography ............................................................................................................................. 43 8.4.2 Access .................................................................................................................................... 43 8.4.3 Climate .................................................................................................................................... 43 8.4.4 Power ...................................................................................................................................... 44 8.4.5 Water ...................................................................................................................................... 44 8.4.6 History ..................................................................................................................................... 44 8.5 Geology and Mineralisation ............................................................................................................ 44 8.5.1 Regional and Local Geology.................................................................................................... 44 8.5.2 Deposit Geology ...................................................................................................................... 45 8.5.3 Mineralisation 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