David Wajsgras was named CFO and senior vice president of Raytheon Co., a $21.9 billion defense contractor based in Waltham, Mass. He succeeds Biggs Porter, who was Raytheon's acting CFO since April 2005. Porter will remain Raytheon's controller and vice president. Most recently, Wajsgras, 46, was CFO and executive vice president of Lear Corp., a $17 billion supplier of automotive interior products based in Southfield, Mich. Prior to joining Lear in September 1999 as controller and vice president, Wajsgras was corporate controller for Engelhard Corp. and held various financial positions at Honeywell International Inc.

Lear Corp. named vice chairman James Vandenberghe its interim CFO. Vandenberghe, 56, joined Lear Siegler Inc., the predecessor of Lear Corp., in 1973 as a financial analyst and has held financial and general management positions since then, including CFO and vice president of finance, secretary and chief operating officer.

Michael Lehman was named CFO of Sun Microsystems Inc., an $11 billion maker of UNIX-based servers based in Santa Clara, Calif. He succeeds Steve McGowan, who announced his resignation as CFO in October 2005. McGowan will remain with the company serving as senior vice president of finance. Most recently, Lehman, 55, had been a business consultant and also served on the boards of directors for Echelon Corp., Sun Microsystems, NetIQ Corp. and MGIC Investment Corp. Lehman will remain a director on the board of MGIC Investment. From 1998 to 2002, he served as CFO and executive vice president of corporate resources at Sun Microsystems.