Safra Catz

CEO, Oracle

Rank on list: 15

Net worth: $1.2 billion

Source of wealth: Software Citizenship: U.S.

Catz has served as CEO of software firm Oracle since September 2014, when founder and fellow billionaire Larry Ellison stepped down from the role. She joined Oracle in 1999 and is credited with spearheading Oracle’s aggressive acquisition strategy, helping close more than 130 acquisitions. Catz and her husband, Gal Tirosh, gave $250,000 to President Trump’s fundraising committee in June 2020.