Shareholders’ Committee


Chairman of Shareholders' Committee
Matthias Zachert

Matthias Zachert was born in Bonn, Germany in 1967. He completed an industrial management apprenticeship at Mercedes-Benz AG before he studied business administration with a concentration in finance and international management from 1990 to 1995. He graduated with a degree in business administration (Diplom-Kaufmann).

From 1999 to 2002, Matthias Zachert worked in Paris as Chief Financial Officer of the International Region of Aventis Pharma AG, which was formed by the merger of Hoechst Marion Roussel (HMR) and Rhône-Poulenc Rorer. Before the merger that created Aventis, he held various senior management positions in the pharmaceutical business of Hoechst AG. As of 2002 Matthias Zachert was Chief Financial Officer at Kamps AG, where he helped to restructure the company. Matthias Zachert served as Chief Financial Officer of LANXESS AG from 2004 to 2011, where he played a key role in establishing the global finance organization, restructuring the portfolio, and realigning the Bayer spin-off. From June 2011, he has been a member of the Executive Board and Chief Financial Officer at Merck KGaA. Since April 1, 2014, Matthias Zachert is Chairman of the Board of Management of LANXESS AG.

Vice Chairman of Shareholders' Committee
Warren Wilder

Warren Wilder is Vice President, Chemicals, leading Saudi Aramco’s Downstream chemicals business. In that capacity, he leads the company’s strategically critical chemicals businesses, including the Sadara and Petro-Rabigh joint-ventures.

Mr. Wilder has more than 30 years’ experience in the global chemical and refining industry, including senior leadership positions in several highly respected U.S. and Asian chemicals companies. Mr. Wilder was President and CEO responsible for the olefins, polyolefins and PVC business at Mumbai-based Reliance Industries, Ltd., and he was a Board member and Managing Director of Titan Chemicals in Malaysia.

He began his professional career with Exxon in refinery process engineering, financial planning, business development and strategic planning. He has led enterprises in North America, South America and Europe.

He represents Saudi Aramco as a member of Sadara’s Board of Directors. Wilder holds an MBA in Finance from the University of Chicago-Booth School of Business, and an undergraduate degree, with honors, in Chemical Engineering from the University of Washington.

Member of Shareholders' Committee
Michael Pontzen

Michael Pontzen was born in Mönchengladbach, Germany, in 1969. After obtaining a degree in business administration (Diplom-Kaufmann) from the Philipps University in Marburg, he started his career as assistant to the Management Board of Ferrostaal AG in Essen, Germany. In 1999, he joined MAN AG as a manager in Investor Relations before moving to EADS (now Airbus) in Munich, Germany, in August 2001, where he was a team leader in Investor Relations.

Pontzen joined LANXESS in November 2004 as head of the Investor Relations group function. In October 2008, he became head of Corporate Finance within the Treasury group function. He additionally assumed responsibility for Risk and Cash Management from spring 2009.

Pontzen has been head of the Corporate Controlling group function since January 2012.

Michael Pontzen was appointed by the Supervisory Board of LANXESS AG on March 17, 2015, to become Chief Financial Officer of the specialty chemicals company effective April 1, 2015.

Member of Shareholders' Committee
Khalid H. Al-Dabbagh

Khalid H. Al-Dabbagh was assigned to the position of Controller at Saudi Aramco in January 2012 and is responsible for Saudi Aramco’s worldwide accounting activities and issuance of the Company’s annual financial report.  

Prior to that he was  appointed Treasurer after serving as the Acting Executive Head of Treasury since February 2010. His primary responsibilities included developing a robust financial framework to ensure the funding of the Company’s operating expenditures and its very ambitious Capital Program, and the safeguarding of the Company’s financial assets. 

From September 2008, Khalid H. Al-Dabbagh was the Manager of Corporate Planning’s Business Analysis Department. In this capacity, among others he oversaw various and diverse Corporate activities related to the evaluation of all of Saudi Aramco’s capital and non-capital projects and proposals. He also recommended the Company’s position with regard to the international energy policies and regulation pertinent to Climate Change and WTO. 

Prior to that, Khalid was assigned as the Acting Executive Director of Marketing, Supply and Joint Venture Coordination in June 2008. His key responsibilities included all crude oil, refined products and LPG global sales and marketing activities for Saudi Aramco.

From February 2008, Khalid H. Al-Dabbagh was the Manager of Saudi Aramco’s crude oil sales and marketing.  During the period July 2006 to January 2008 he served as the Director of Joint Venture Development and Support Department. In this role, he was also responsible for evaluating and pursuing investment and divestment opportunities as part of the company objectives.

Mr. Al-Dabbagh was the President and CEO of Saudi Petroleum International Inc. in New York from March 2003 - July 2006. In that role, his primary responsibility was crude oil sales and marketing activities for the Americas market.

Prior to that, Khalid H. Al-Dabbagh was the General Manager of Saudi Petroleum Limited from August 2001 to February 2003 where he oversaw crude oil, LPG and refined products sales into North Asia.  

In addition to the above tenures, Mr. Al-Dabbagh has served as a Board Director in Showa Shell (a refining, petrochemical and marketing joint venture between Shell and Saudi Aramco), Fujian Refining and Petrochemical Company (a refining and petrochemical joint venture between Exxon, Sinopec and Saudi Aramco), Luberef (a base oil joint venture between Saudi Aramco and Jadwa Investment), SUMED (a pipeline and terminal joint venture between the Egyptian Government, various GCC Governments and Saudi Aramco). He also served as the Vice Chairman of Sinopec SenMei Products Company (a marketing and retailing joint venture with ExxonMobil and Sinopec in Fujian Province, China). Khalid Al-Dabbagh served as a Board Director of Aramco Trading Company and is currently the Chairman of Saudi Aramco Trading Company Board Audit Committee; he chairs King Abdullah Petroleum Studies and Research Center Investment Management Company, and is a Board member of Saudi Aramco Energy Venture; Saudi Aramco Entrepreneurship Center, Sadara.  

Khalid Al-Dabbagh earned a bachelor of science degree in 1985 in industrial engineering from the University of Toledo in the United States and successfully completed the Senior Excecutive Program at the London Business School in London, UK.