http://finance.yahoo.com/news/List-of-CEOs-at-IBM-over-the-apf-2525698777.html

List of CEOs at IBM over the years

From Watson to Rometty: List of CEOs at IBM over the years

The Associated Press, On Tuesday October 25, 2011, 5:58 pm EDT

Thomas J. Watson, May 1914-May 1956 Thomas J. Watson, Jr., May 1956-June 1971 T. Vincent Learson, June 1971-January 1973 Frank T. Cary, January 1973-January 1981 John Opel, January 1981-January 1985 John F. Akers, February 1985-April 1993 Louis V. Gerstner, Jr., April 1993-March 2002 Samuel J. Palmisano, March 2002-December 2011 Virginia "Ginni" Rometty, effective January 2012