A. Schulman, a $1.6 billion plasticsmanufacturer in Akron, Ohio, said its controller, DonaldMcMillan, will take on the additional title of chiefaccounting officer. McMillan is also interim principal financialofficer, a role he has been performing since Paul DeSantis left thecompany in February. Chief accounting officer is a new position forthe company. McMillan, 51, has served as A. Schulman's controllersince 2006, and has worked in finance throughout his 15 years withthe company. Before joining A. Schulman, he worked in publicaccounting.

Black Hills Corp., a $1.3 billion energycompany in Rapid City, S.D., named Brian Iversontreasurer and vice president. He replaces GarnerAnderson, who continues to serve as chief risk officer andvice president. Iverson, 48, most recently was the company's vicepresident of electric regulatory services. Since joining BlackHills in 2004, he has worked in the legal, regulatory and resourceplanning areas. Prior to joining the company, he worked in law andbanking.

Titan Machinery, a $1 billion maker ofconstruction and agricultural equipment in West Fargo, N.D., namedMark Kalvoda CFO. He replaces PeterChristianson, who remains with the company as presidentand COO. Kalvoda, 39, has served as chief accounting officer sincejoining Titan in 2007. Earlier, he spent three years at AmericanCrystal Sugar, including stints as controller and assistanttreasurer, and worked in finance at Hormel Foods.

Wright Express Corp., a payment processingcompany in South Portland, Maine, promoted StevenElder to CFO. He succeeds Melissa Smith,who was appointed the company's president for North America. Elder,42, has been the company's treasurer since 2005. He has also servedas vice president of investor relations and vice president ofcorporate finance. Going forward, Elder will also serve as thecompany's chief accounting officer. Wright Express reported revenueof $390 million in 2010.

The St. Joe Co., a real estate developmentcompany in WaterSound, Fla., named Janna ConnollyCFO and senior vice president. She replaces WilliamMcCalmont, who is leaving the company. Connolly, 55, hasserved as chief accounting officer since 2007, and earlier was thecompany's controller and vice president. The St. Joe Co. reported2010 revenue of $99.5 million.

Ramtron International Corp., a maker of semiconductors inColorado Springs, Colo., named Mark Kent CFO. Hesucceeds Eric Balzer, who was named CEO inJanuary. Kent, 51, was CFO of RPX Corp., a patent aggregator, fromSeptember 2008 to November 2009. Earlier, he served as CFO ofInsitu, Sigma Design and Transmeta Corp., and as treasurer of LSICorp. Ramtron reported revenue of $70 million in 2010.