Rex Energy Corp. has appointed Robert Ovitz to serve as COO effective immediately. He replaces Patrick McKinney, who has held the position since 2010 and is leaving the company for investment banking. Ovitz most recently served as the company’s senior vice president of operations. He joined the company in 2014 after spending more than a decade with Noble Energy Inc. He will oversee all of Rex’s operations in the Appalachian and Illinois basins.