35. MARISSA MAYER

$800 million  SOURCE: Google, Yahoo AGE: 46 • RESIDENCE: Palo Alto, CA SELF-MADE SCORE:  Mayer was one of Google’s earliest employees but made a name for herself when she left the search giant in 2012 to become the CEO of Yahoo. She stepped down shortly after Verizon acquired Yahoo in 2017. Now her efforts are focused on Sunshine, her startup—formerly known as Lumi Labs— which released an address-book app called Sunshine Contacts late last year.