Greg O’Hara


Greg O’Hara, chairman of the board of American Express Global Business Travel, is an investor with significant experience in the travel industry. He founded Certares and is currently its chairman and chief executive officer.

O’Hara is currently a member of the board of directors of Travel Leaders Group and has previously served on the boards of Carlson Wagonlit Travel, Travelport, Worldspan Technologies and various other companies. Prior to founding Certares, he was the chief investment officer at JPMorgan Chase's Special Investments Group and was also a managing director at One Equity Partners.

Earlier in his career, he served as an executive vice president of corporate planning and development of Worldspan Technologies and Worldspan, a Senior vice president of Sabre, Inc. and various other positions.

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Paul Abbott


Paul Abbott is Chief Executive Officer of American Express Global Business Travel (GBT). Prior to joining GBT, Paul was Chief Commercial Officer, Global Commercial Payments at American Express.

In his twenty-four years at American Express, Paul served in a variety of senior roles across the business. He has led the rapid and successful expansion of the American Express Business-to-Business Payments business around the world and introduced innovative new products and services to 4 million businesses of all sizes in over 150 countries.

In addition, Paul led the expansion of American Express’ card-issuing partnerships with some of the world’s largest financial institutions. His reputation for developing diverse, high performing teams that embrace change, deliver strong results and have an intense focus on building enduring relationships with clients is well-deserved.

No stranger to the travel business or to GBT, Paul began his career at British Airways, spending nine years with the company. He subsequently worked in the corporate travel business at American Express. Paul was invited to join the GBT Board in 2015.

Paul is based in London. He lives in Buckinghamshire, in the UK, with his wife Angela and their 18-year-old twins. A keen traveler, Paul never misses a chance to explore the world with his family, where they often find the time to indulge in the other family passions of cricket, golf, rugby, football and international cuisine.

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Eric J. Bock


Eric J. Bock is chief legal officer, corporate secretary and global head of mergers and acquisitions for American Express Global Business Travel. In this role, he is responsible for all legal, corporate governance, government relations and M&A matters for the company.

Prior to joining GBT, Bock served as executive vice president, chief legal officer and chief administrative officer, as well as chief compliance and ethics officer of Travelport and as a member of the board of directors of eNett International, a leading provider of innovative, integrated payment solutions. In addition to playing an integral role in developing and implementing Travelport’s strategic plans, he also was chairman of the enterprise risk management committee and a member of the employee benefits, charitable, disclosure and investment committees.

Prior to Travelport, Bock was executive vice president, law and corporate secretary for Cendant Corporation, overseeing the company’s legal practice groups in securities and corporate finance, mergers and acquisitions, corporate secretarial and governance matters, executive compensation, travel distribution services and marketing services. He also served on Cendant’s business ethics committee, disclosure committee, employee benefits committee and business continuity planning committee. Before Cendant, Bock was associated with the corporate group at Skadden, Arps, Slate, Meagher & Flom LLP.

Bock is a graduate of Lafayette College and Fordham University School of Law.

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Bill Brindle


Bill Brindle is Chief Operating Officer (COO) of American Express Global Business Travel (GBT), responsible for our combined global operational delivery teams (GBT Traveler Care and HRG Operations).

Prior to joining GBT, Bill served as COO of HRG, where he led innovations in HRG’s technology, distribution, product development and client data, as well as leading the growth and ultimate sale of its Fraedom payments business to Visa.

Bill joined HRG in 1998 as Head of Technology, and was instrumental in driving change systems within the business, focusing on the design, development, delivery and support of innovative business systems and architecture, resulting in him being named one of the most influential person in business travel technology.

Starting his career in the Civil Service, Bill moved into the travel industry in 1981, holding various positions in distribution technology with British Caledonian Airways and Amadeus Global Travel Distribution before joining HRG.

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Philippe Chérèque


Philippe Chérèque is president of American Express Global Business Travel (GBT), responsible for GBT’s customer-facing organizations, including sales and client management, Global Business Consulting, Meetings & Events, and Technology.

Prior to that, he served as the senior vice president of corporate strategy, responsible for driving and coordinating the company’s business development, marketing, technical architecture and product plan. Chérèque joined Amadeus Global Travel Distribution S.A. as one of the founders in 1987.

Prior to joining Amadeus, Chérèque worked at Air France for seven years, where he held a number of managerial positions in operational research, computer analysis and passenger application software development.

A graduate engineer of the Institut Supérieur d’Electronique de Paris, Chérèque also holds a master of science degree in electronics from the University of Paris.

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Martine Gerow


Martine Gerow is chief financial officer of American Express Global Business Travel (GBT), responsible for overall financial management of the company, its financial reporting and transparency, and for multiple corporate functions including controller, treasury, tax, audit, pricing, financial planning and analysis.

Prior to joining American Express Global Business Travel, Gerow served as chief financial officer of Carlson Wagonlit Travel where she led a large global team overseeing all functions within the finance division. She has also held CFO positions at French media services company SoLocal Groupe and Spanish multinational food company, Campofrio. Earlier in her career, she was a strategy consultant for the Boston Consulting Group, before moving to PepsiCo and then Danone, where she held division CFO and group controller roles.

Gerow received a business degree from HEC Paris and an MBA from the Columbia Business School in New York. She is on the Board and chair of the audit committee of BPI France Investment since 2015.

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Patricia Huska

Chief People Officer

Patricia Huska is the Chief People Officer (CPO) for American Express Global Business Travel (GBT) responsible for leading the Company’s Human Resources function. In this new role, Huska leads a people-focused strategy designed to attract and retain talent, while furthering GBT’s focus on being the employer of choice in the global travel industry. She is responsible for all traditional HR requirements that support more than 16,000 highly-skilled business travel professionals across GBT’s global enterprise.

Prior to becoming CPO, Huska was previously Vice President of Global Human Resources for GBT, responsible for the development and execution of strategies aimed at attracting talent, while retaining and engaging the existing employee base. She also has significant merger and acquisition experience and most recently, spearheaded the HR integration of HRG from due diligence to execution.

An accomplished human resources leader with 25 years at American Express and GBT, Huska has a broad HR background including employee relations, recruitment, change management, and organizational effectiveness. Throughout her career, she has led the creation of many corporate initiatives including home-based servicing for travel counsellors, workforce flexibility initiatives, and leadership development programs.

Huska has a master’s degree in Management from Lesley University and a bachelor’s in Business Administration from the University of Massachusetts at Amherst.

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Si-Yeon Kim


Si-Yeon Kim is chief compliance and risk officer for American Express Global Business Travel (GBT), overseeing compliance & ethics, operational risk, and credit risk for the company.

Previously, Kim served as chief compliance officer for One Equity Partners (OEP), JPMorgan Chase & Co.’s private investment arm, where she oversaw all financial and bank regulatory matters, as well as FCPA/UKBA, OFAC and AML compliance for OEP and its portfolio companies. Before joining OEP, Kim was the Asia-Pacific general counsel of Avon Products, Inc., based in Hong Kong, and prior to that, assistant general counsel at Avon’s Global Corporate headquarters in New York. She began her law career at Chadbourne & Parke LLP.

Kim received her J.D. from Columbia Law School where she was a Harlan Fiske Stone Scholar, her A.M. from Harvard University in Russian regional studies, and her B.A. from Seoul National University in Russian language and literature.

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Joanna Macleod

Chief Transformation Officer

Joanna Macleod is Chief Transformation Officer for American Express Global Business Travel (GBT). In this role, Joanna leads the integration of GBT and HRG, development of our new shared culture and contributes to our digital servicing capabilities.

Joanna previously led GBT's Global Traveler Care organization, which provides travel management services to corporate clients across a wide range of sectors. Joanna also served as a Director on the Board of American Express Europe LLC.

Joanna is an expert in setting up, leading and transforming international service businesses. Her passion is the challenge of leading teams in companies or industries going through significant change and delivering sustainable customer value and exceptional customer service.

Prior to joining GBT and American Express, she spent three years in the business process outsourcing sector, first as Chief Operating Officer at Sitel EMEA, and then as a Consultant providing business transformation services in HR outsourcing. At Dell, Joanna managed customer service operations for EMEA and led the transformation to a lower cost, high quality service model. Joanna has also held Corporate Finance and Corporate Development roles with KPMG and Telecom New Zealand.

Joanna holds a Bachelor of Accountancy from Glasgow University and an MBA from Canterbury University. She is a member of the Institute of Chartered Accountants of Scotland.

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Michael Qualantone

Chief Revenue Officer

Michael Qualantone is the Chief Revenue Officer at American Express Global Business Travel (GBT). He leads the Global Supplier Relations, Meetings and Events, and Customer Revenue Management functions.

Previously, Michael was Executive Vice President of Global Supplier Relations where he led a global team responsible for all GBT supplier engagements with airlines, hotels, car companies and limo providers, as well as on-line booking tool providers and Global Distribution Systems (GDSs).

He has also led the Travel Partner Network, made up of GBT Franchise partners who service business travelers in countries where GBT has no proprietary presence. Prior to this, he led Global Marketing, Product Development and Innovation, as well as internal and external Communications. This role included innovative and strategic efforts such as mobility, MI, and customer value programs. The Communication team leads all industry, media, and social media channels.

In a prior role, Michael was Vice President, Client Services Group, bringing together key Operational and Client Management aspects of the organization, with over 2,500 employees. Michael has led operations for both the US On-site servicing and Latin America call centers. He has been with American Express for 31 years and has held various leadership positions within Finance and Business Travel. He is based in Phoenix, Arizona.

Michael earned his MBA and B.S. Degree from Arizona State University.

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David Thompson

Chief Information Technology Officer

As chief information technology officer (CITO), David Thompson capitalizes on his more than 25 years of experience to manage enterprise technology, application development, IT operations and data systems, information security and the product development teams at American Express Global Business Travel (GBT).

Thompson joins GBT after most recently overseeing IT strategy, operations, information security and product development as chief technology officer and executive vice president of global operations at Western Union, an international financial services company. His extensive background also includes previous chief technology and information officer positions at leading technology companies Symantec, Oracle and PeopleSoft.

While earning his bachelor’s degree in Business Administration from Marymount University, Thompson also served as an intelligence systems officer in the U.S. Air Force.

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