Net Worth: $1.4 billion

LAST YEAR: NEW
CHANGE: NA
AGE: 75
RESIDENCE: Bel Air
SOURCE OF WEALTH: Pharmaceutical company sales

An Israeli native, Belldegrun came to Los Angeles in 1989 to build up an immunology clinical research program at UCLA. He went on to co-found three biopharma companies. He sold Agensys in 2007 to Tokyo-based Astellas Pharma for $537 million and Cougar Biotechnology sold to Johnson & Johnson for nearly $1 billion in 2009. He later sold Kite Pharma in Santa Monica to Gilead Sciences for $11.9 billion. Belldegrun used the proceeds to launch Bellco Capital, a private equity firm. He has a stake in Two River Group Holdings and created Vita Ventures and Breakthrough Properties. Most recently, he launched Symbiotic Capital as a non-bank lender to bioscience firms.

Education: Medical degree from Hadassah Medical Center at Hebrew University in Jerusalem; completed residency in urological studies at Harvard Medical School.

Charitable Giving: Has given nearly $100 million to help establish the California Institute for Immunology and Immunotherapy at the former Westside Pavilion.