H. Clifford Buster III is the new executive vice president and CFO at Dollar Thrifty Automotive Group Inc., the $1.8 billion car rental company based in Tulsa, Okla. Buster, 40, replaces Scott L. Thompson, 49, who was promoted to president and CEO after five months as senior executive vice president and CFO. Buster joins the company from offshore Helix Energy Solutions Group, where he was vice president of finance and treasurer since March 2006. Previously, Buster spent 10 years at Group 1 Automotive, a franchiser of car dealerships where he was vice president and treasurer in March 2006 when he left.

Michael McDonnell becomes the new executive vice president and CFO on Nov. 17 at Intelsat Ltd., the $1.7 billion provider of fixed satellite services based in Pembroke, Bermuda. McDonnell, 44, succeeds David McGlade, 47, who became interim CFO in addition to CEO after Jeffrey P. Freimark, 53, resigned on June 5 to become CEO at Miami Jewish Home and Hospital. McDonnell joins the company after four years at MCG Capital, a commercial finance company, where he served as COO since August 2006 and as executive vice president, CFO and treasurer since September 2004. Previously, McDonnell was CFO at EchoStar Communications, a satellite television operator now known as DISH Network.

Joseph H. Ceryanec takes on the role of vice president and CFO at Meredith Corp., the $1.6 billion media and marketing company based in Des Moines, Iowa. Ceryanec, 47, replaces Suku V. Radia, 56, who resigned in February to become president of Bankers Trust. Ceryanec joins the company from PAETEC, a telecommunications company, where he was Central Region president since February 2008. Prior to PAETEC's acquisition of McLeodUSA, another telecommunications company, Ceryanec was McLeodUSA's group vice president and CFO from August 2005 to February 2008 and its controller and treasurer from September 1996 to August 2005.