Jeff Sharpe was named president and chief executive of Lockheed Martin Investment Management Co., which manages the Bethesda, Md.-based company's estimated $23.4 billion in pension and $17.4 billion in defined contribution assets. He replaces Janet L. McGregor, who left the company to "pursue other opportunities," said Tom Greer, a Lockheed Martin spokesman. Mr. Sharpe will report to Mary Margaret VanDeWeghe, who was named to the new position of senior vice president of finance at Lockheed Martin Corp., effective Feb. 1. Mr. Sharpe was acting president and CEO of LMIMCO while Ms. McGregor was on an extended leave of absence. Ms. VanDeWeghe was CEO of strategic and financial consulting firm Forte Consulting and a finance professor at the graduate business school at the University of Maryland. A Forte Consulting spokesman could not be reached to comment on a replacement for Ms. VanDeWeghe.