FMC Technologies, a $4.1 billion Houston-basedcompany that provides technology for the energy industry, namedHalet Murphy treasurer. He succeedsMaryann Seamann, who was promoted to CFO andsenior vice president. Murphy, 41, most recently was treasurer andvice president at Hawker Beechcraft. Earlier, he served asassistant treasurer at Novelis and director of financial riskmanagement at Lear, and worked in finance at Delphi and LTVCorp.

Cedar Fair, the $977 million amusement parkcompany, appointed Brian Witherow CFO andexecutive vice president. He replaces Peter Crage,who resigned in June. Witherow, 44, has been the Sandusky,Ohio-based company's corporate controller and vice president since2005. He was Cedar Fair's corporate treasurer from 2004 to 2005 andcorporate director of investor relations from 1995 to 2004. Priorto joining Cedar Fair, Witherow worked at Arthur Andersen.

Illumina, a $902 million San Diego-basedmanufacturer of genetic analysis tools, named MarcStapley CFO and senior vice president. He succeedsChristian Henry, who served as both CFO andgeneral manager of the company's genetic analysis business for twoyears, and will continue as general manager. Stapley, 42, mostrecently was senior vice president for global financial processesand systems at Pfizer. Earlier, he served as Americas CFO atAlcatel-Lucent, finance director and controller at Cadence DesignSystems and an auditor at Coopers & Lybrand.