15 execs who make more than their CEOs

• Title: COO
  
• Company: Facebook
• CEO: Mark Zuckerberg
• Pay difference: $15.5 million
  

It's fitting that the woman who wrote about gender inequality makes more than her male boss.

But while she gets more income, he has more wealth. On paper, Zuckerberg takes a $1 salary and ran up a personal travel bill. But his massive stake in the company means he's worth about $24 billion, while Sandberg has just entered the billionaire's club.

The secret behind her higher pay? It's her equity in the company, not her salary.

Nearly all of Sandberg's pay, $15.1 million, was in stock. That sounds like a lot, but it's actually a major pay cut she and the Zuck took in 2013. --J.P.

NEXT: Thomas K. Montag, $15.1 million