Melinda French Gates

Since splitting from Bill Gates (No. 4) earlier this year, French Gates has received at least $5.7 billion of stock from her ex-husband. Thanks to a secret separation agreement, it’s not clear what else she’ll get. Going forward, she will run her women-focused investment rm, Pivotal Ventures, and remain co-chair of the Gates Foundation with Bill—though if the pair can’t work together, she will step down after two years.