In April,WhatsApp's Jan Koum announced that he planned to leave Facebook. By leaving, he could have left $1 billion of shares on the table by leaving before they vest. Koum is no dummy. He's still showing up to the Facebook office. Koum is participating in the practice of resting and vesting.
Read more: Whatsapp Founder Jan Koum Is Showing Up To Facebook, and Barely Working,Waiting to gather $450 Milli
Source: celebritynetworth.com