Exelon Corp., a $17.3 billion electric utility, appointed Stacie Frank vice president of investor relations. She replaces Karie Anderson, who was named vice president of corporate financial planning and analysis. Frank, 34, most recently served as director of investor relations for the Chicago-based company. She has worked in finance positions and in the regulatory group of Commonwealth Edison, a subsidiary of Exelon, since she joined the company in 2002.

Jack Matejka was named senior vice president of internal audit at $11.8 billion Eaton Corp., a Cleveland-based manufacturer. He succeeds Jeff Moelich, who left the company in March. Matejka, 53, joined Eaton in 1989 as manager of IT audits and has led the company's IT security and compliance function since 2001.

CB Richard Ellis, the $4.1 billion commercial real estate services company, appointed Gil Borok CFO. He succeeds Robert Sulentic, who remains the company's president. Borok, 42, most recently was the company's CFO for the Americas, chief accounting officer and executive vice president. He served as interim CFO in early 2009. Borok joined CB Richard Ellis in 2002 as global controller from Dole Food, where he had been corporate controller.