Edward "Ned" Kelly is now CFO of Citigroup, the $52 billion New York-based financial services holding company. Kelly, 55, most recently served as head of global banking and CEO of Citi Alternative Investments. He succeeds Gary Crittenden, 55, who assumes the newly created role of chairman of Citi Holdings. Crittenden had served as Citi's CFO since March 2007.

Kenneth Burk adds the role of executive vice president to his current position as CFO of Perini, the $5.7 billion construction services company in Framingham, Mass. He also oversees human resources, information systems and investor relations. Burk joined Perini in 2007 as CFO and senior vice president after serving as president and CEO of Union Switch & Signal.

Carolyn J. Stone, 36, is now treasurer and senior vice president of Dynegy, the $3.6 billion electricity provider in Houston. Stone had been Dynegy's controller and senior vice president, a role now filled by Tracy A. McLauchlin, 39, who moves up from assistant controller and managing director. Stone succeeds Charles C. Cook, who previously was named executive vice president of commercial and market analytics.