Guided by its vision-mission statement, NAC recognizes that corporate governance is central to longevity and success. Thus, it is committed to the highest standards of corporate governance by establishing a well-represented Board whose actions and decisions are anchored on the core values of the Group.

Jose Isidro N. Camacho

Non-Executive Director

Chairman of the Board

Jose Isidro N. Camacho

Non-Executive Director

Chairman of the Board


Date First Elected to the Board: June 7, 2024

JOSE ISIDRO N. CAMACHO is the Chairman of the Company and serves as Chairman of the Board’s Finance Committee and Corporate Governance Committee. He is currently the Chairman of the University of the Arts Singapore, Diniwid Beach Corp., and Bangko ng Kabuhayan, and Co-Chairman of Jin Chan Invest Pte Ltd. He is a Director of Advintel Inc. and Singapore Tyler Print Institute and an Independent Director of Trans Diversified Group Inc. and Citadel Pacific Limited. He is a Senior Adviser to TPG Capital (Singapore), Neurocredit (Singapore), Golden Ridge Ventures (Singapore), and SICPA (Switzerland) and a Founding Member of Asia Peace and Reconciliation Council (Thailand).

Prior to joining the government, Mr. Camacho served as Managing Director and Chief Country Officer for the Philippines at Deutsche Bank AG in Manila. Before joining Deutsche Bank, he spent over 20 years with Bankers Trust Company, holding various positions across New York, Japan, Hong Kong, the Philippines, and Singapore, and ultimately serving as Head of Investment Banking for Southeast Asia and Chief Executive Officer for Singapore.

He was appointed Secretary of Finance of the Philippines in 2001 and served until November 2003, where he led the country’s economic team and supervised the fiscal and financial sectors. Prior to this, he served as Secretary of Energy and was instrumental in the passage of key power sector reform legislation. He also chaired several government institutions, including Land Bank of the Philippines, the Philippine Deposit Insurance Corporation, Trade Development and Investment Corporation (PhilExim), Home Guaranty Corporation, National Power Corporation, Power Sector Asset and Liability Management Corporation, and the National Transmission Corporation (TransCo).

Following his government service, Mr. Camacho joined Credit Suisse in March 2005 and served as Chief Executive Officer of Credit Suisse Singapore from 2007 to 2016, and later as Vice Chairman for Credit Suisse Asia Pacific. He has held various board and advisory roles, including as a member of the boards of the National Gallery Singapore (2013–2021), the National Heritage Board of Singapore (2007–2013), Sun Life Malaysia Takaful Berhad (2013–2019), and Sun Life Malaysia Assurance Berhad (2013–2022). He also served as a member of the Securities Industry Council of Singapore (2010–2017), the Securities Commission of Malaysia’s International Advisory Group (2008–2010), and the ASEAN Capital Markets Forum’s Group of Experts (2008–2012).

Mr. Camacho is a Founding Member of the Asia Peace and Reconciliation Council (Thailand) and currently serves as an Independent Director of Citadel Pacific Limited and Trans Diversified Group Inc., and is affiliated with SICPA (Switzerland). He previously served as Chairman of Sun Life of Canada (Philippines), Inc.

He obtained his Bachelor’s degree in Mathematics (cum laude) from De La Salle University in 1975 and his Master of Business Administration, with a concentration in Finance, from Harvard University in 1979. In 2017, he was conferred an Honorary Doctorate in Business Administration by Eastern Asia University in Thailand, and in 2021, he was awarded Singapore’s Public Service Medal (Pingat Bakti Masyarakat). In 2025, he participated in training on Mining and Renewable Energy Business, Regulatory, Sustainability, and Risk Management.

Martin Antonio G. Zamora

Executive Director

President and Chief Executive Officer

Martin Antonio G. Zamora

Executive Director

President and Chief Executive Officer


Date First Elected to the Board: June 16, 2010

MARTIN ANTONIO G. ZAMORA is the President and Chief Executive Officer (CEO) of the Company. He is the President of all the Company’s mining subsidiaries. He serves as the Chairman and President and CEO of EPI, as well as the Chairman of EPI’s subsidiaries. He is also Chairman of the Board’s Sustainability Committee and Nominations Committee, and a member of the Finance Committee and the Board Risk Oversight Committee. He is also Chairman of NACFI and RTN Foundation, Inc. (RTNFI).

Prior to joining the Company in 2007, Mr. Zamora was the Philippine Country Manager and a Director of UPC Renewables, a global developer, owner, and operator of wind and solar energy projects. Prior to this, he worked for ten (10) years in finance and investment banking, including with CLSA, Robert Fleming & Co. (UK), Jardine Fleming, and SGV & Co.

Mr. Zamora obtained his Bachelor of Science in Management from Ateneo de Manila University, his Master of Business Administration from London Business School, and his Master in Organizational Psychology from INSEAD. He also participates in extensive trainings on corporate governance, sustainability, ethics and compliance, crisis management, risk management, among others. In 2025, he participated in corporate governance training on Board Responsibilities and Artificial Intelligence, Embracing the Future of Work, and Exploring the Future.

Maria Patricia Z. Riingen

Non-Executive Director

Vice Chairman

Maria Patricia Z. Riingen

Non-Executive Director

Vice Chairman


Date First Elected to the Board: May 20, 2019

MARIA PATRICIA Z. RIINGEN is the Vice Chairman of the Company and a member of the Board’s Corporate Governance Committee. She serves as Chairman of CDTN Services Company Inc. (CDTN), Cagdianao Mining Corporation (CMC), Dinapigue Mining Corporation (DMC), La Costa Shipping and Lighterage Corporation (LCSLC), Nickel Asia Holdings, Inc. (NAHI), Samar Nickel Mining Resources Corporation (SNMRC), Greenlight Renewables Holdings, Inc (GRHI), Casilagan Solar Power Corporation (CSPC), San Antonio Solar Power Corp. (SASPC), Sta. Maria Solar Power Corporation (SMSPC), SanJuan Solar Power Corporation (SSPC), and Tuy Solar and Wind Power Corp. (TSWPC). She is also Vice Chairman and Director of Rio Tuba Nickel Mining Corporation (RTN), Taganito Mining Corporation (TMC), and Hinatuan Mining Corporation (HMC), and a Director of Cordillera Exploration Co., Inc. (CEXCI), Newminco Pacific Mining Corporation (Newminco), Emerging Power, Inc. (EPI), Jobin-SQM Inc. (JSI), Biliran Holdings Inc. (BHI), Mindoro Geothermal Power Corporation (MGPC), National Palawan Power Generation Corporation (NPPGC), Emerging Energy Resources 1 Inc. (EER 1), Emerging Energy Resources 2 Inc. (EER 2), Emerging Energy Resources 3 Inc. (EER 3), and Emerging Energy Saver Corporation (EESC). In addition, she is a Trustee of NAC Foundation, Inc. (NACFI).

Ms. Riingen is the President of Manta Equities Inc. (Manta), Manta Foundation, Inc., and Mantra Resources Corp. She currently serves as Chairperson of the Young Presidents’ Organization Gold Philippines Chapter.

Prior to these roles, she held various leadership positions at The Western Union Company, where she served as Senior Vice President and Regional Head for Asia Pacific. Her earlier experience includes serving as Executive Director and member of the Board of Directors of the Asian Development Bank, Vice President at Citibank, N.A., and Brand Manager at Procter & Gamble.

She has received several recognitions, including being named among Asia’s Top 20 People in Cash Management by FinanceAsia in 2011, in recognition of her influence and leadership in the industry. In 2013, she was included in the list of the 100 Most Influential Filipinas in the World and received the Pinnacle Group CSR Award for her initiatives promoting greater access to financial services in the Philippines.

Ms. Riingen obtained her Bachelor of Science in Business Administration, major in Marketing, magna cum laude, from the University of the Philippines. She also participates in extensive trainings on corporate governance, sustainability, ethics and compliance, crisis management, risk management, among others. In 2025, she participated in corporate governance training on Board Responsibilities and Artificial Intelligence, Embracing the Future of Work, Exploring the Future, Elite Performance Intensive, Turbocharge your Efficiency with Artificial Intelligence, and she also attended the YPO Global Leadership Conference.

Harvey T. Ang

Non-Executive Director

Harvey T. Ang

Non-Executive Director


Date First Elected to the Board: June 3, 2022

MR. HARVEY T. ANG is a Director of the Company and a member of its Finance Committee. He also serves as a Director of EPI, RTN, TMC, CDTN, CMC, DMC, HMC, SNMRC, LCSLC, CEXCI, and Newminco, and is Vice Chairman of NAHI and President of Yeeloofa Development Corporation.

Previously, he held management roles at Exchange Properties Resources Corporation and Solid Mills, Inc. Mr. Ang brings experience across the real estate, textile, logistics, retail, and marketing sectors. He holds a Bachelor of Science in Management from Ateneo de Manila University. He also participates in extensive trainings on corporate governance, sustainability, ethics and compliance, risk management, among others. In 2025, he participated in corporate governance training on Board Responsibilities and Artificial Intelligence, Embracing the Future of Work, and Exploring the Future.

Shiro Imai

Non-Executive Director

Shiro Imai

Non-Executive Director


Date First Elected to the Board: June 30, 2022

SHIRO IMAI is a Director of the Company. He currently serves as General Manager of the Nickel Sales and Raw Materials Department of Sumitomo Metal Mining Co., Ltd. (SMM). He also serves as a Director of Taganito HPAL Nickel Corporation (THNC), Coral Bay Nickel Corporation (CBNC), PT Vale Indonesia Tbk, Hyuga Smelting Co., Ltd., Vale Japan Limited, and Figesbal S.A.

Prior to his current role, Mr. Imai served as President of Sumitomo Metal Mining Philippine Holdings Corp. (SMMPH), CBNC, and THNC from June 2022 to June 2025. He has been with SMM since 1995, holding various roles across its sales and materials divisions. He was assigned to the Sales and Marketing Section of the Electronics Division from April 1995 to January 2001, and subsequently to the Sales and Marketing Section of the Advanced Materials Division from February 2001 to October 2009.

In November 2009, he joined the Nickel Sales and Raw Materials Department of the Non-Ferrous Metals Division, where he served until June 2014, after which he was appointed as SMM’s Chief Representative in its London Office. He later served as Manager of the Copper and Precious Raw Materials Department from June 2016 to September 2019.

Mr. Imai obtained his Bachelor’s degree in Economics from Tohoku University in Miyagi, Japan. He also participates in extensive trainings on corporate governance, sustainability, ethics and compliance, risk management, among others. In 2025, he participated in corporate governance training on Board Responsibilities and Artificial Intelligence, Embracing the Future of Work, and Exploring the Future.

Naoki Kawai

Non-Executive Director

Naoki Kawai

Non-Executive Director


Date First Elected to the Board: July 11, 2025

NAOKI KAWAI is a Director of the Company and serves as Chairman of the Related Party Transactions Committee, and as a member of the Audit Committee and the Nominations Committee. He is the Chairman and President of SMMPH, CBNC, and THNC, effective June 26, 2025. He is also a Qualified Executive of SMM.

Mr. Kawai has been with SMM since 1992 and has held various roles across its operations. His assignments include the Copper and Precious Metals Sales Department (October 2001 to February 2003) and the Nickel Sales and Raw Materials Department (February 2003 to February 2008), both under the Non-Ferrous Metals Division; SMM’s London Office (February 2008 to March 2010); and a secondment to MS Zinc Co., Ltd. (March 2010 to October 2015).

Prior to his current roles, he served as Executive Officer and Senior Deputy General Manager of the Non-Ferrous Metals Division from June 2024 until June 26, 2025. He was also General Manager of the Copper and Precious Metals Sales Department from November 2017 to June 2024, and Manager of the Copper Section of the same department from October 2015 to November 2017.

Mr. Kawai graduated from the School of Education of Waseda University in 1992. In 2025, he participated in corporate governance training on Board Responsibilities and Artificial Intelligence, Embracing the Future of Work, and Exploring the Future, and he also attended training on Mining and Renewable Energy Business, Regulatory, Sustainability, and Risk Management.

Leonides Juan Mariano C. Virata

Non-Executive Director

Leonides Juan Mariano C. Virata

Non-Executive Director


Date First Elected to the Board: June 30, 2022

LEONIDES JUAN MARIANO C. VIRATA is a Director of the Company and a member of the Sustainability Committee. He is the Chief Executive Officer of Cavitex Holdings, Inc. and the Managing Director of MTV Investment Properties.

Prior to these roles, Mr. Virata was part of the Broking Research team of Platinum Securities from 2006 to 2010. He is a member of the Makati Business Club.

Mr. Virata obtained his Bachelor of Arts, major in Philosophy of Religions, from the University of Pennsylvania. He also participates in extensive trainings on corporate governance, sustainability, ethics and compliance, risk management, among others. In 2025, he participated in corporate governance training on Board Responsibilities and Artificial Intelligence, Embracing the Future of Work, and Exploring the Future.

Florencia Gozon Tarriela

Independent Director

Florencia Gozon Tarriela

Independent Director


Date First Elected to the Board: August 04, 2022

FLORENCIA GOZON TARRIELA is the Lead Independent Director of the Company, Chair of the Audit Committee, and a member of the Board Risk Oversight, Related Party Transactions, and Corporate Governance Committees.

Ms. Tarriela currently serves as Board Advisor to Philippine National Bank and LT Group, Inc., and a Director of Gozon Development Corporation. She is also a Trustee of Tulay sa Pag-unlad, Inc. and Philippine Bible Society. She is also a GoNegosyo mentor and a member of the Filipina CEO Circle and the Women Business Council Philippines.

She previously served as Chair and Independent Director of PNB for 15 years, as well as Undersecretary of the Department of Finance. Earlier in her career, she became the first Filipina Vice President of Citibank, N.A., and also served as President of the Bankers Institute of the Philippines and Director of the Bankers Association of the Philippines.

Ms. Tarriela has co-authored and compiled several books on ethics, mentorship, and gardening, among other topics, and continues to be a regular columnist for the Manila Bulletin and BusinessWorld.

She obtained her Bachelor of Science in Business Administration, major in Economics, from the University of the Philippines, and her Master’s degree in Economics from the University of California, Los Angeles. She also participates in extensive trainings on corporate governance, sustainability, ethics and compliance, risk management, among others. In 2025, she participated in corporate governance training on Board Responsibilities and Artificial Intelligence, Embracing the Future of Work, Exploring the Future, and other training on Artificial Intelligence.

James J.K. Hung

Independent Director

James J.K. Hung

Independent Director


Date First Elected to the Board: June 7, 2024

MR. JAMES J.K. HUNG is an Independent Director of the Company and serves as Chairman of the Board Risk Oversight Committee, and as a member of the Audit Committee, Nominations Committee, Related Party Transactions Committee, and Sustainability Committee.

Mr. Hung is the Chairman of Asia Securities Global Group in Hong King since 1993 and ASG Inspiration Laboratory (Singapore) Pte, Ltd. He previously served as Chairman of Asia Securities in Taiwan and as an Independent Director of Security Bank. He has also served as a Director of Franklin Templeton Investment Fund in Luxembourg, Franklin Sealand Fund Management Co. Ltd. in Shanghai, and other international funds.

Mr. Hung obtained his Master’s degree in Business Administration, major in Finance, from Babson College in Massachusetts. In 2025, he participated in corporate governance training on Board Responsibilities and Artificial Intelligence, Embracing the Future of Work, Exploring the Future, and AI-Intelligent, Innovation, Symbiosis.

Manuel B. Zamora, Jr.

Board Advisor

Manuel B. Zamora, Jr.

Board Advisor


Date First Elected to the Board:

Frederick Y. Dy

Board Advisor

Frederick Y. Dy

Board Advisor


Date First Elected to the Board:

Philip T. Ang

Board Advisor

Philip T. Ang

Board Advisor


Date First Elected to the Board:

Officers

Jose Isidro N. Camacho

Chairman of the Board of Directors

Maria Patricia Z. Riingen

Vice Chairman

Martin Antonio G. Zamora

President and Chief Executive Officer

Jose Bayani D. Baylon

Senior Vice President – Sustainability, Risk Management and Corporate Affairs; Chief Sustainability Officer; and Chief Risk Officer

Koichi Ishihara

Senior Vice President – Chief Commercial Officer

Georgina Carolina Y. Martinez

Senior Vice President, Compliance and Corporate Support Services (CCSS), Chief Compliance Officer, Chief Governance Officer, and Assistant Corporate Secretary; Concurrent with: Head, CCSS Shared Services

Romeo T. Tanalgo

Senior Vice President – Chief Security and Aviation Officer
Security and Aviation

Maria Angela G. Villamor

Senior Vice President – Finance; Chief Financial Officer; Treasurer

Andre Mikael L. Dy

Vice President – Finance and Corporate Planning; Deputy Chief Financial Officer

Jeffrey B. Escoto

Vice President – Supply Chain Management and Technical Services

Patrick S. Garcia

Vice President – Internal Audit; Chief Audit Executive

Ryan Rene C. Jornada

Vice President – External Affairs, Regulatory and Community Relations

Ma. Fatima C. Mijares

Vice President, People Transformation and Workplace; Concurrent with: Head, HR Shared Services and Head, Workplace Services

Irene R. Ramos-Salvacion

Vice President – Compliance and Legal; Data Protection Officer

Cynthia E. Rosero

Vice President - Mining Center of Excellence Technical Operations

Joselito G. Calpito

Vice President, Technology Management and Transformation

Atty. Abraham A. Agamata

Assistant Vice President - External Affairs

Bimbo T. Almonte

Assistant Vice President, Health Strategy & Governance; Concurrent with: Head, Health Services

Remedios C. Camo

Assistant Vice President – Mining Compliance

Edwin R. Casiano

Assistant Vice President – Mining Business

Fernando P. Cruz

Assistant Vice President, Mining Controllership Operations

Reynaldo M. Dela Rosa

Assistant Vice President – Community Relations

Christian Jae R. Gascon

Assistant Vice President – Mining Business

Philipp D. Ines

Assistant Vice President – Mining Business

Marnelle A. Jalandoon

Assistant Vice President – Information Technology Services

Melchor C. Mananes

Assistant Vice President – Financial Planning and Analysis

Reynold DG. Mata II

Vice President – Mining Business Support Services

Christine Joanne C. Navarro

Assistant Vice President, Legal Services

Edwin P. Nerva

Assistant Vice President – Sustainability

Iryan Jean U. Padillo

Assistant Vice President – Financial, Tax and External Reporting

Jessie N. Pagaran

Assistant Vice President – Employee, Labor, and Industrial Relations

Teody A. Pascual

Assistant Vice President – Procurement

Jessie A. Payuyo

Assistant Vice President, Mining Finance & Business Performance

Kristine C. Victoria

Assistant Vice President – Geology

Charito R. Villena-Co

Assistant Vice President – Tax Compliance and Advisory

Barbara Anne C. Migallos

Corporate Secretary

Audit Committee

Florencia G. Tarriela (Independent Director)

Chairman

Naoki Kawai

Member

James J.K. Hung (Independent Director)

Member

Board Risk Oversight Committee

James J.K. Hung (Independent Director)

Chairman

Florencia G. Tarriela (Independent Director)

Member

Martin Antonio G. Zamora

Member

Related Party Transactions Committee

Naoki Kawai

Chairman

Florencia G. Tarriela (Independent Director)

Member

James J.K. Hung (Independent Director)

Member

Corporate Governance Committee

Jose Isidro N. Camacho

Chairman

Florencia G. Tarriela (Independent Director)

Member

Maria Patricia Z. Riingen

Member

Nominations Committee

Martin Antonio G. Zamora

Chairman

James J.K. Hung (Independent Director)

Member

Naoki Kawai

Member

Finance Committee

Jose Isidro N. Camacho

Chairman

Martin Antonio G. Zamora

Member

Harvey T. Ang

Member

Sustainability Committee

Martin Antonio G. Zamora

Chairman

James J.K. Hung (Independent Director)

Member

Leonides Juan Mariano C. Virata

Member

Rio Tuba Nickel Mining Corporation

Cynthia E. Rosero

SVP - Chief Operating Officer

Jessie A. Payuyo

Mining Comptroller

Ronellbert A. Suguitan

VP – Resident Mine Manager

Cagdianao Mining Corporation

Artemio E. Valeroso

SVP – Chief Operating Officer

Jessie A. Payuyo

AVP – Mining Comptroller

Engr. Christian Jae R. Gascon

Resident Mine Manager

Cordillera Exploration Co., Inc.

Graciano P. Yumul, Jr.

President

Dinapigue Mining Corporation

Francisco J. Arañes, Jr.

SVP – Chief Operating Officer

Jessie A. Payuyo

AVP – Mining Comptroller

Edwin R. Casiano

Resident Mine Manager

Hinatuan Mining Corporation – Manicani Nickel Project

Philipp D. Ines

Vice President; Resident Mine Manager

Fernando P. Cruz

AVP – Mining Comptroller

Hinatuan Mining Corporation - Taganaan Nickel Project

Francisco J. Arañes, Jr.

SVP – Chief Operating Officer and Resident Mine Manager

Fernando P. Cruz

AVP – Mining Comptroller

Newminco Pacific Mining Corporation

Graciano P. Yumul, Jr.

President

Jessie A. Payuyo

AVP - Finance

Taganito Mining Corporation

Artemio E. Valeroso

SVP – Chief Operating Officer and Resident Mine Manager

Fernando P. Cruz

AVP – Mining Comptroller