Board of Directors

Brian Martin is the Chairman of the Board of OceanaGold (Philippines), Inc. and serves as Senior Vice President, Business Development and Investor Relations at OceanaGold Corporation.

A seasoned mining executive with two decades of experience in the metals and mining sector, Mr. Martin brings deep expertise in corporate strategy, investor engagement, and business development. In his current role, Mr. Martin leads OceanaGold’s investor relations program, advances strategic growth initiatives, and plays a central role in shaping and executing the company’s corporate strategy. He was instrumental in the successful initial public offering of OceanaGold Philippines in 2024.

Prior to joining OceanaGold, Mr. Martin held senior roles in corporate development and investor relations at SSR Mining Inc. and Liberty Gold Corp. At SSR Mining, Mr. Martin was a leading member of a top-performing corporate development and investor relations team, helping to propel its growth into a premier intermediate precious metal producer. Mr. Martin began his career in equity research at a Canadian investment bank, focusing on precious metal mining companies. He holds a Bachelor of Commerce degree from the University of British Columbia and is a CFA Charterholder.

Joan D. Adaci-Cattiling is a member of the Board and the President and General Manager for External Affairs and Social Performance. She started as Head of the Legal Department of the business unit in July 2007, and later as Senior Vice President for Legal and Human Resources. She also serves as the President and a director of other Philippine subsidiaries of OceanaGold.

Before joining OceanaGold in 2007, Ms. Adaci-Cattiling was a member of the Legal Department at Mirant (Philippines) Corporation, and an Associate at SyCip Salazar Hernandez & Gatmaitan Law Office.

Currently, she serves as a Trustee of the Chamber of Mines of the Philippines and Diwata – Women in Resource Development, Inc., as a Member of Nueva Vizcaya Provincial Mining Regulatory Board and the Quirino Provincial Mining Regulatory Board, and as an Industry Representative for Philippine Extractive Industries Transparency Initiative (PH-EITI) Multi-Stakeholder Group. Ms. Adaci-Cattiling holds a Bachelor of Arts in Communications and a Bachelor of Laws from the University of the Philippines. She ranked fifth in the 2000 Philippine Bar Examinations.

David John Bickerton is a Director of OceanaGold (Philippines), Inc. and the Asset President of Didipio Operations.  He is an accomplished mining management professional, having spent the past 13 years in senior roles across OceanaGold leading design, construction, commissioning, production ramp up, operation, and closure. He previously held a range of roles including Project Director – Waihi Expansion (New Zealand) where he led the development of the consenting strategy and lodgment of the Waihi North consent application, General Manager – Project Execution (Queensland, Australia) finalizing the scope and leading the execution of the Reefton Restoration closure program, Vice President – Project Execution Haile Gold Mine Construction and Commissioning (South Carolina, United States of America), Integration Manager – Waihi Gold Mine Acquisition, General Manager – Didipio Operations (2014) and Project Manager – Didipio Project Execution (2011-2014).

Prior to joining OceanaGold, Mr. Bickerton held various positions in the resources industry including Lihir Gold (Papua New Guinea), Yabulu Nickel Refinery (Queensland, Australia), and Transfield Services (Queensland and Western Australia). He holds a Diploma of Project Management from Deakin University, and a Master of Business Administration from Australian Institute of Management

Gregory L. Domingo worked in the private sector for the last 40 years and served twice in the Philippine government –as Secretary of the Department of Trade and Industry from July 2010 to December 2015 and as Head of the Board of Investments from May 2001 to April 2004. During his stint in the government, he chaired the Asia- Pacific Economic Cooperation Trade Ministers meetings in 2015 and was a Vice Chairperson of the World Trade Organization Ministerial meeting in Nairobi in 2015.

He is currently a Board Adviser to SM Investments Corporation, and a member of the Board of Directors of BDO Private Bank, Alternergy Holdings Corporation, Belle Corporation and other Philippine companies. Mr. Domingo holds a Master’s in Business Administration from the Asian Institute of Management and a Master’s degree in Operations Research from the Wharton School of the University of Pennsylvania. He also holds a Bachelor of Science in Management Engineering at the Ateneo de Manila University.

Mia G. Gentugaya is a faculty member at the University of the Philippines (JD and LLM Programs), Silliman University – College of Law, and Lyceum of the Philippines University – College of Law. She was a former senior partner at SyCip Salazar Hernandez & Gatmaitan (SyCipLaw) until her retirement in 2016 and also acted as an Of Counsel of said law firm until December 31, 2021. Prior to her retirement from SyCipLaw, she headed its Banking, Finance & Securities Group and was a member of its Executive Committee.

Ms. Gentugaya is also currently an independent director of Philippine Capital Commercial, Inc., and a director and the Corporate Secretary of BW Shipping Philippines, Inc. and of Synbiotic Food Corporation, as well as the President of Chamomile Holdings, Inc. She is a director of the Academy for Children of All Abilities Philippines, Inc. doing business as The Vanguard Academy, a K-12 inclusive educational institution for children of all abilities. She also sits as a director of various companies in the real estate sector and other holding companies in the same industry.

Ms. Gentugaya holds a Master of Laws, a Bachelor of Laws (now Juris Doctor), and a Bachelor of Arts major in Political Science from the University of the Philippines.

Tomasa H. Lipana is a former Chairman and Senior Partner of Isla Lipana & Co./PricewaterhouseCoopers Philippines, where she started, trained and practiced her career in audit, accounting, taxation and management for almost 40 years.

A CPA board placer and a Cum laude BSBA graduate from the University of the East, Ms. Lipana has extensive experience as a member of the Board of Directors, chair of Audit Committee and member of Corporate Governance, Compensation and Nomination, and Risk Management Committees of various companies. Currently, she is the lead independent director of SM Investments Corporation, and an independent director of Flexo Manufacturing Corporation and Rural Bank of Silay City. She served as an appointive private sector director of Philippine Guarantee Corporation (formerly Philippine Export and Import Corporation) from July 2015 to June 2021.

Ms. Lipana also held directorships in Inter-Asia Development Bank, QBE Seaboard Insurance Corporation, Goldilocks Bakeshop Inc., and other private corporations. She has been a member of the Board of Trustees of several non-profit organizations including the Institute of Corporate Directors, Shareholders Association of the Philippines, and Sikat Solar Challenge Foundation. She is a member of the Board of Governors of the Canadian Chamber of Commerce of the Philippines and served as President of the Tax Management of the Philippines and Vice-president/Governor of the Management Association of the Philippines.

Liang Tang is the Executive Vice President, General Counsel and Company Secretary of OceanaGold Corporation. She is a practicing lawyer with a broad range of legal and corporate experience in the gold mining sector, including capital markets, debt financing and corporate and commercial law.

Prior to joining OceanaGold’s legal and company secretariat team in 2009, Ms. Tang was a commercial lawyer in private practice.

Ms. Tang holds a Bachelor of Commerce, a Bachelor of Laws, and a Master of Laws from the University of Melbourne.

Marius van Niekerk was appointed Chief Financial Officer of OceanaGold Corporation in May 2023.

Mr. van Niekerk is a mining executive with approximately 25 years of broad-based mining and technology industry experience spanning South Africa, the UK (London), Mozambique, Singapore and Canada. Prior to joining OceanaGold, he spent the vast majority of his mining career working for various operations and corporate centers across BHP and Newcrest where he focused on strategy, functional excellence, energy negotiations, M&A commercial integrations, technology advancements, First Nations engagements and a range of value delivery and synergy initiatives.

Mr. van Niekerk has experience in aluminium, alumina, energy, energy coal, gold and copper.

He holds a Bachelor in Economic and Management Sciences from the University of Pretoria (South Africa), an Honors in Accounting Sciences from the University of South Africa and he is a Chartered Accountant in South Africa and a CPA in Ontario, Canada. Mr. van Niekerk is a graduate of the University of Toronto / Rothman Business School – Institute of Corporate Directors Program in Canada and holds the ICD.D designation.