Leslie Morgenstein is the President and Founder of Alloy Entertainment, a creator and producer of books, television, and film. The Los Angeles and New York–based production company officially became part of Warner Bros. Television Group in 2012.[1] Morgenstein previously served as President of the company's predecessor, 17th Street Productions, Inc. starting in 1999.[2] He has been credited with facilitating the adaptation of a number of book titles into television series. Examples include Gossip Girl, The Vampire Diaries, Pretty Little Liars, and The 100.[3] Morgenstein has also been involved in feature film projects, credited as an executive producer on the Sisterhood of the Traveling Pants series[4] and as a producer on Netflix's Purple Hearts.[5]