Tan Sri Dato' Seri Mohd Hassan bin Marican Chairman Tan Sri Dato' Seri Mohd Hassan Marican, aged 54, is the President and Chief Executive Officer of Petroliam Nasional Berhad (PETRONAS). A Fellow of the Institute of Chartered Accountants in England and Wales, as well as a member of the Malaysian Institute of Accountants and the Malaysian Institute of Certified Public Accountants. He joined PETRONAS in 1989 as Senior Vice President of Finance and was appointed as President and Chief Executive Officer in February 1995. Tan Sri Dato' Seri Mohd Hassan is a member of the PETRONAS Board of Directors, and apart from MISC Berhad, he is also the Chairman of PETRONAS Gas Berhad, another public listed subsidiary of PETRONAS, and Chairman of Engen Limited, South Africa’s leading oil refining and marketing company, a subsidiary of PETRONAS. Beyond PETRONAS, Tan Sri Dato' Seri Mohd Hassan is a Board member of Bank Negara Malaysia and a member of the Board of Malaysia-Thailand Joint Authority, which oversees petroleum development in the overlapping area between Malaysia and Thailand. He is also a member of the International Investment Council for the Republic of South Africa.