Zambrano’s career running Cemex, including serving as chairman since 1995, made him one of the longest-tenured CEOs at a major Mexican industrial company and one of the country’s most-prominent business leaders. Zambrano served as a director at dozens of companies, and was on boards including those of International Business Machines Corp. at the time of his death. Lorenzo H. Zambrano was born on March 27, 1944, in Monterrey, Mexico, according to Marquis Who’s Who. In 1968 he earned a master of business administration degree from Stanford University in California, and joined Cemex that year. Lorenzo H. Zambrano is chairman and chief executive officer of CEMEX, S.A.B. de C.V., a producer and marketer of cement and ready-mix concrete products. He is a member of IBM's Directors and Corporate Governance Committee. Mr. Zambrano joined CEMEX in 1968. He was named chief executive officer in 1985 and has also served as chairman of the board since 1995. He is a director of Grupo Televisa and a member of the Citigroup International Advisory Board. He is also chairman of the board of the Tecnologico de Monterrey. Mr. Zambrano became an IBM director in 2003.