The “rat” who gave up Johnny Sack was Jimmy Petrille. He was played by an actor named Vinnie Vella. He was a confidant of Sack and sat in on at least one meeting I can recall between Tony and Johnny Sack. His character was modeled, according to some, after Sammy Gravano.Click to see full answer. In this way, what happened to Johnny Sack in The Sopranos?Johnny (Sack) Sacramoni became the first of the capos to fall last night. The incarcerated head of the New York family succumbed to lung cancer in the prison’s hospital ward, kicking off “The Sopranos” death watch as the HBO series unspools its final episodes.Additionally, how did Richie Aprile die? Deceased. Richie Aprile: shot by Janice after he punched her in the mouth for defending his son being a ballroom dancer. One may also ask, who is Johnny Sack based on? That was New York underboss John Sacrimoni (“Johnny Sack”). Whether referring to Carmine Jr.Does Johnny Sack die?John “Johnny Sack” Sacrimoni: dies of lung cancer in prison.