NET WORTH: $1.46 billion, up 10 percent

LAST YEAR: $1.33 billion

AGE: 70

RESIDENCE: Holmby Hills

SOURCE OF WEALTH: Communications, real estate, art

THE MONEY: Money spread across real estate, art, stocks and bonds. Expanded real estate portfolio, adding commercial properties in Seattle, Culver City and Beverly Hills. Collecting art for nearly 50 years has been lucrative as value of pieces has risen faster than any other asset class. Has limited exposure in oil and gas investments.

BUZZ: Busy year for Nathanson and pet causes. He and wife, Jane, gave $50 million in art by Hirst, Lichtenstein and Warhol to Los Angeles County Museum of Art for its 50th anniversary. Supporting Hillary Clinton bid for White House. Founded Falcon Communications in 1975, sold to Microsoft co-founder Paul Allen for $3.7 billion in 1999. Substantial investment in waterless urinal maker Falcon Waterfree Technologies based in West Los Angeles in early 2000. Spends couple of months annually at family’s Aspen, Co., compound.