Steve Bing, a producer, philanthropist and screenwriter, has died by suicide in Los Angeles. He was 55.

Police and the coroner’s office said a man fitting his age jumped from a Century City apartment building on Monday. Sources told TMZ he had been suffering from depression.

Bing, who inherited a fortune of some $600 million from his grandfather, L.A. real estate developer Leo S. Bing, also contributed millions of dollars to Democratic political causes.

After receiving his inheritance at the age of 18, Bing dropped out of Stanford to try out the movie business. While he was still a high school student at Harvard-Westlake, he wrote the story for “Missing in Action” and later wrote an episode of “Married With Children.”

In 2003, he co-wrote the action comedy “Kangaroo Jack,” starring Anthony Anderson and Jerry O’Connell.

Bing invested some $80 million in “The Polar Express,” the Tom Hanks-voiced 2004 film directed by Robert Zemeckis.