According to the search results, Sam Witwicky is a character from the Transformers franchise, played by Shia LaBeouf. He was the hero of the first three Transformers movies, but did not appear in the fourth film, Transformers: Age of Extinction, which followed a new hero, Cade Yaeger. The fate of Sam Witwicky was revealed in the fifth film, Transformers: The Last Knight. Sir Edmund Burton shows Vivian Wembley a family tree of the Witwicky family, which ends with Sam, and explains that she is the last surviving member of the Witwiccan Order. This implies that Sam Witwicky died at some point between Dark Of The Moon and The Last Knight. However, the movie does not explain how he died or what happened to him. Some fans speculate that Sam was killed by one of the men in Cemetery Wind during the ambush in Transformers: Age of Extinction, as Optimus Prime can be heard saying "No, No! Sam run!".