Hugh Marks is stepping down as CEO of Southern Star Group, and will continue to assist Southern Star as an adviser. Rory Callaghan will step into the CEO role, effective immediately. Callaghan has been with the company since January 2006, as director of programs and then MD in 2008. Southern Star was recently acquired by Endemol and the distribution businesses of Southern Star and Endemol were merged, and is headed up by Cathy Payne in London. See the release for more.