Mr. Roberto B. Ortiz, Filipino, 72, has been serving as Chairman of PT&T Corp. from June 2026. He also has been serving as an Independent Director since July 2018. With over 27 years of experience in finance, corporate governance, and investment banking, Mr. Ortiz has played a key role in shaping the financial and strategic direction of the organizations he has served.

He began his career at Price Waterhouse (now PricewaterhouseCoopers) from 1987 to 1994. He later served as Vice President for Finance at Consolidated Industrial Gases Inc. from 1994 to 2003. From 2003 to 2009, he was Chief Finance Officer of All Asian Countertrade Inc. and its subsidiaries—Sweet Crystals Integrated Sugar Mill Corporation and Basecom Inc.

Since 2010, Mr. Ortiz has been serving as Director and Chief Finance Officer of Total Nutrition Corporation. He is also currently the Director and CFO of Premiere Horizon Alliance Corporation (PHA), formerly Premiere Entertainment Philippines Inc. Additionally, he serves as Chairman of the Board of Goshen Land Capital Inc., a prominent real estate developer in Baguio and Benguet. With his deep financial expertise, Mr. Ortiz is also a trusted advisor to various companies in the fintech and stock investment sectors.

He earned his Bachelor of Science in Management Engineering from Ateneo de Manila University in 1973.

Mr. Salvador “Buddy” Zamora II, Filipino, 78, served as Chairman of PT&T Corp. from August 2017 to September 2021 and has been a Director since August 2017. He is a prominent figure in Philippine business, known for his extensive contributions to the mining, energy, agriculture, and real estate sectors.

He currently serves as the Chairman and Chief Executive Officer of Tranzen Group Inc., a Filipino-owned holding company engaged in renewable energy, agro-industries, and resort development.

Mr. Zamora made his mark in the 1970s by establishing Nickel Asia Corporation, now the country’s largest producer of lateritic nickel ore and one of the largest globally. He served as President and CEO of Nickel Asia Corporation from 2006 to 2009 and previously led its key operations at Hinatuan Mining Corporation, Taganito Mining Corporation, and Cagdianao Mining Corporation.

In 2008, he established Tranzen Group Inc. with the vision of building a diversified, future-ready conglomerate. Under his leadership, the Group partnered with Carbon Assets Fund of the Cayman Islands to build the Philippines’ first methane production plant in Rizal. Tranzen Group continues to expand with projects in hydropower generation and mining ventures, including interests in Dinagat Island.

Mr. Zamora also chairs several major corporations, including: Philippine Phosphate Fertilizer Corporation, Bacavalley Energy, Inc., One Pacstar Realty Corporation, Two Pactstar Realty Corporation, Agusan Power Corporation, Philphos Trading Inc., Lear Aero Ltd., Inc., Libjo Mining Corporation, and Lake Mainit Hydro Holdings Corporation.

Mr. Zamora holds a Bachelor’s degree from Ateneo de Manila University and a Master of Business Administration from New York University in the United States.

Ms. Ma. Cristina Z. Borra, Filipino, 50, has been serving as a Director of PT&T Corp. since September 2020. She brings with her over 24 years of academic and research experience across both local and international institutions.

She began her career in 1996 as a part-time Executive Assistant at Hinatuan International Inc. while completing her undergraduate degree. From 1998 to 2000, she worked as a Researcher for the Zamora Research Group, focusing on both local and international political and institutional issues.

Ms. Borra’s teaching career spans over two decades. From 2000 to 2015, she taught Literature and English at the University of Asia and the Pacific (UA&P), handling courses across undergraduate and graduate levels. She later joined Manresa School in 2015 as a full-time Senior High School English teacher, delivering subjects such as Oral Communication, English for Academic and Professional Purposes, and Research in Daily Life. In 2020, she served as an online instructor for UA&P’s Junior Academic Assistance Program under WordPrime Reading Lab, mentoring incoming senior high school students in academic essay writing.

Ms. Borra holds a Bachelor of Arts in Humanities from the Center for Research and Communication – College of Arts and Sciences (now UA&P) and a Master of Arts in Liberal Studies from New York University under the Draper Interdisciplinary Program. She has also pursued doctoral studies in Comparative Literature at the University of the Philippines – Diliman.

Mr. Bryan Joseph P. Santiago, Filipino, 51, has been serving as a Director of PT&T Corp. since November 2022. He currently serves as the President and Chief Executive Officer of Telectronic Systems, Inc. (TSI). He has been a Director of TSI since 2012 and was appointed President & CEO in 2019, bringing with him over two decades of experience in the telecommunications industry.

He began his career in telecom in 1996 with PWI and PT&T—then sister companies under the same corporate group. He also served as a Director of PT&T from 2012 to 2017. In addition to his current executive leadership role at TSI, Mr. Santiago concurrently serves as a Director of various TSI affiliate companies under the TSI Group of Companies.

Mr. Santiago holds a Bachelor of Arts degree in English from the University of California, Berkeley, which he completed in 1996.

Mr. Richard Alan P. Santiago, Filipino, 56, has been serving as a Director of PT&T Corp. since November 2022. He currently serves as the President and Chief Executive Officer of Tesco Services, Inc. (TESCO). He has been actively involved in the telecommunications industry since 1989, holding various operational roles across several organizations. He began his career with TESCO’s parent holding company, Telectronic Systems, Inc. (TSI), and has since contributed to affiliated companies including PT&T, RETELCOM, and other entities under the TSI Group of Companies.

In addition to his executive role at TESCO, Mr. Santiago serves as a Director of TSI, RETELCOM, TIMCO, and other affiliated businesses such as GVM Private Security, Inc. and El Jovir Realty Development Corp.

Mr. Santiago earned his Bachelor of Arts degree in Economics from the University of California, Los Angeles (UCLA) in 1989.

Ms. Kristine B. Cuenca, Filipino, 38, has been serving as a Director of PT&T Corp. since September 2024 and was appointed Treasurer of the company in April 2025. She brings a strategic blend of digital systems expertise and financial oversight to the Board.

Since 2019, Ms. Cuenca has also held the position of IT Director at 5G Security Inc., where she leads the company’s digital transformation initiatives and oversees core technology operations. Her industry background spans digital systems management, marketing technology, and organizational efficiency.

Ms. Cuenca earned her degree in Advertising and Public Relations from Universidad de Navarra in 2010 and later obtained a Digital Marketing Certificate from General Assembly in New York in 2016.

Mr. Serafin C. Ledesma, Jr., Filipino, 83, has been serving as an Independent Director of PT&T Corp. since July 2018. Based in Davao City, he brings a wealth of experience in telecommunications, media, and civic engagement, with a distinguished career that spans over four decades.

Mr. Ledesma held several leadership roles in the telecommunications industry, including his tenure as Branch Manager of Telefast Communications (1976–1978), Area Manager of PT&T (1978–1982), and Vice President for Mindanao at PT&T (1982–2001). He also co-chaired the Technical Working Group for the Interconnection of Telecommunications Networks in Mindanao from 1986 to 2001, playing a key role in advancing telecom infrastructure in the region.

His media background includes serving as Station Manager, News Director, and Program Director for various radio stations and news agencies in Mindanao. Today, he remains active in journalism as a columnist and opinion writer for SunStar Davao and the Philippine News Agency.

In addition to his corporate and media roles, Mr. Ledesma is a long-time civic leader. He is a former President of the Davao Integrated Press Club (1974–1977), Media Dabaw (1978–1980), and the Rotary Club of Davao (1997–1998). He also served as a Director of the Davao City Water District from 2014 to 2016.

Mr. Ledesma earned his Bachelor of Science in Natural Science from Mindanao Colleges (now University of Mindanao) in 1964.

Mr. Bienvenido S. Santos, Filipino, 67, has been serving as an Independent Director of PT&T Corp. since June 2019. He brings with him decades of extensive experience in business leadership, holding key positions across a wide range of industries. He currently serves as Chairman of several corporations, including BC Net, Asian Carmakers Corporation, GND Holdings, and Beebeelee. He is also the Vice Chairman of Sta. Rosa Motor Works, Inc., Eurobrands Distributor Inc., Columbian Motors Corporation, Columbian Manufacturing Corporation, and Subic Air, Inc.

In addition to these roles, Mr. Santos is a Director and President of various other companies engaged in diverse sectors within the Philippines, demonstrating his broad influence and leadership in the business community.

Mr. Santos earned his Bachelor of Science degree in Management Engineering from Ateneo de Manila University.

Mr. Carlos Andres V. Reyes, Filipino, 49, has been serving as an Independent Director of PT&T Corp. since September 2020. He currently holds the position of Assistant Vice President for Metro Manila Sales at Bluefire LPG Marketing, where he oversees strategic sales operations and market expansion initiatives in the region.

He earned his Bachelor of Science degree in Business Administration, major in Marketing Management, from De La Salle-College of Saint Benilde.

Elmer B. Serrano, Filipino, 57, has been serving as an Independent Director of PT&T Corp. since November 2022. He is a seasoned legal practitioner with extensive expertise in corporate law and currently serves as the Managing Partner of Serrano Law. Atty. Serrano also holds key corporate governance roles as the Corporate Secretary of several leading corporations, including SM Investments Corporation, SM Prime Holdings, Inc., Premium Leisure Corp., Atlas Consolidated Mining and Development Corporation, and various subsidiaries of BDO Unibank, Inc.

Mr. Serrano is a Certified Associate Treasury Professional and was among the top graduates of the Trust Institute of the Philippines in 2001. He holds both a Juris Doctor degree and a Bachelor of Science degree in Legal Management from the Ateneo de Manila University.

Mr. Jeffrey “Jep” Julian has been serving as PT&T Corp.’s President since June 2026 and Chief Technical Officer since June 2019. He is a seasoned telecommunications professional with over 24 years of industry experience across local and international markets. Since joining PT&T in 2019, he has led the company’s technical operations with a focus on driving innovation, efficiency, and end-to-end project delivery.

His extensive background includes leadership roles such as Project Management Office Head, Project Director, Senior Telecom Consultant, and National Project Head for global telecom giants including Huawei, Ericsson, Fiberhome, Nextel, Sun Cellular, and Dimension Data. He has also delivered critical infrastructure projects for clients such as Afghan Telecom, Ethiopian Telecommunications Corporation, and the Saudi Telecom Company.

Mr. Julian is known for his out-of-the-box thinking and ability to implement large-scale telecom systems with precision. He has spearheaded multiple high-impact projects such as the PLDT FIBERGEN Nationwide Project, Smart Communications’ 2G/3G Modernization, SMC/BellTel IP Network Rollouts, and network optimization initiatives in the Middle East and Africa.

Mr. Julian earned his Bachelor of Science degree in Electronics and Communications Engineering from the University of Santo Tomas.

Atty. Kenneth Joey H. Maceren has been serving as PT&T Corp.’s Assistant Vice President – Corporate Affairs Group Head since August 2024. He is also the Corporate Secretary of PT&T Corp. since February 2018, while concurrently acting as in-house counsel for SecureLink Networks Inc., the joint venture between PT&T and Netlinkz Ltd. of Australia. He is a seasoned lawyer with over 18 years of combined experience in litigation and corporate law.

He began his legal career at two Makati-based law firms, where he practiced corporate law—handling incorporations, restructurings, compliance, due diligence, and corporate housekeeping—as well as litigation, including criminal, civil, labor, and administrative cases. His litigation expertise extends to representing clients before the Bureau of Immigration, Department of Labor and Employment, and National Labor Relations Commission, and includes election law cases before the Commission on Elections and House of Representatives Electoral Tribunal.

Transitioning to corporate legal work, he has since held legal positions at publicly listed companies, including Megawide Construction Corporation and MRC Allied, Inc. At PT&T and SecureLink, he manages regulatory and compliance functions with the Securities and Exchange Commission (SEC), Philippine Stock Exchange (PSE), and National Telecommunications Commission (NTC), and represents the companies in procurement and legal proceedings—including a Public-Private Partnership (PPP) engagement with the Department of Education.

Atty. Maceren earned his Bachelor of Laws from San Beda University and holds a Bachelor of Arts degree in Legal Management from the University of Santo Tomas. He was admitted to the Philippine Bar in 2007 and is a member of the Integrated Bar of the Philippines.