Per CNN, Dolan was also a founder and chairman emeritus of The Lustgarten Foundation, which conducts pancreatic cancer research. According to Forbes, Dolan and his family have a net worth of 5.4 billion at the time of his death.

Charles Dolan, who helped pioneer pay television with the founding of Home Box Office Inc. and Cablevision Systems Corp., has died at 98, according to a spokesperson for the Dolan family.

Billionaire businessman Charles Dolan, who founded HBO and Cablevision and whose family owns Madison Square Garden and a number of New York City sports teams, died on Saturday—he was 98. Dolan created Cablevision Systems Corporation in 1973,