| Charles O. "Chuck" Prince, III, born January 13, 1950, is the chief executive officer of Citigroup.
Before taking over Citi's investment banking business, Prince had been Chief Operating Officer of Citigroup. He started his career as an attorney with U.S. Steel Corp in 1975. In 1979, he joined Commercial Credit Co., a predecessor to Citigroup that Sandy Weill took over in 1986. From there, as Weill put together his financial empire, Prince was with him every step. Fortune's