Beth Coleman has been upped to senior veep of ad sales research at MTV Networks Entertainment Group. Coleman was previously veep of audience research with MTV.Sundance Channel has named Michael Lehrer veep of strategic marketing. He joins Sundance from MTV, where he worked on multi-platform marketing. NBCUniversal has appointed Nancy Cohen to director of sales for women. Cohen had been senior account exec at Oxygen. Bryan deCastro has joined Andrew E. Freedman Public Relations as VP. Previously, deCastro ran his own BDC Communications agency. ION Media Networks has promoteed Kendra Cleary, Corry Hart and Laura Diefenbach to VPs of national sales. Hart was previously director of brand entertainment and partnerships at IFC and Sundance Channel. Cleary served as regional sales director at Focus Media & Marketing. Diefenbach joined ION in 2009 as an account executive. Digital Broadcasting Group has upped Joseph Epstein to chief marketing officer. Epstein was previously veep of digital marketing at Sony Pictures Entertainment.