Christodoro will also join board's corporate governance and finance committees. Xerox's board is now comprised of nine directors.
Icahn Enterprises is Xerox's largest shareholder. Carl Icahn reported 9.78 percent stake in Xerox as of June 27, up slightly from the 9.18 percent stake he held as of January 28, according to a Securities and Exchange Commission filing.
— CNBC contributed to this report.