Weinstock joined Sony Pictures Entertainment (SPE) in 2000 as senior vice president of marketing for TriStar Pictures. He served in a similar capacity at Screen Gems and was promoted to executive vice president of marketing in January 2006, since which time the division has released seven number one films.
Recent hits include Resident Evil: Extinction, Underworld: Evolution, When A Stranger Calls, and Stomp The Yard, among others. Weinstock's campaigns include TriStar releases such as Silent Hill and Premonition.
Weinstock is currently overseeing campaigns for Screen Gems' This Christmas, First Sunday, Untraceable, and Prom Night.
Prior to SPE, Weinstock served three years as director of marketing for Fox Searchlight Pictures, where he worked on The Full Monty, Waking Ned Devine, and Boys Don't Cry, among others.