A timeline of some key moments in Mark Hurd's leadership of Hewlett-Packard Co., his resignation and the fallout:

— Feb. 9, 2005: CEO Carly Fiorina steps down amid upheaval about the company's performance following her contested decision to buy Compaq Computer.

— March 29, 2005: Mark Hurd named as new CEO. Starts job in April.

— July 19, 2005: HP announces plans to cut 14,500 jobs, Hurd's first big act as CEO.

— Sept. 22, 2006: HP Chairwoman Patricia Dunn is forced from the board over a disastrous investigation into boardroom leaks to the media that included spying on reporters' and directors' phone records.

— Aug. 26, 2008: HP buys Electronic Data Systems, which sells technology services, for $13.9 billion. The largest of many big acquisitions under Hurd's leadership.

— Aug. 6, 2010: Mark Hurd resigns as CEO after investigation into a sexual harassment claim finds expense reports that were allegedly falsified to conceal a relationship with an HP marketing contractor.

— Sept. 6: Database software maker Oracle Corp. names Hurd co-president and member of the board.

— Sept. 30: HP names Leo Apotheker CEO. Apotheker was the chief of German business software maker SAP AG, which did not renew his contract after financial performance faltered. HP names Ray Lane, another CEO candidate, non-executive chairman. Lane is a partner at Kleiner, Perkins Caufield & Byers, a renowned venture capital firm.

— Dec. 20: The Securities and Exchange Commission launches investigation into the circumstances of Hurd's forced resignation, which triggered a $9 billion drop in HP's market value. The Wall Street Journal reports the SEC is looking into Hurd's expense reports and his accuser's claim that he told her about the EDS acquisition in advance, among other things.

— Jan. 14, 2011: HP says in a filing in a federal court in San Jose, Calif., that it will investigate the circumstances of Hurd's departure and his severance package, in response to a shareholder's demands.

— Jan. 20: HP shakes up board, replacing four of its members.