Travis Kalanick

As a cofounder and CEO it’s easy to imagine Kalanick owns at least 10% of Uber. That would put him close to the $2 billion mark–and earn him a spot on the Forbes 400 list of the richest Americans. In fact, once we learn more about Uber’s ownership structure—there’s a good chance that cofounder Garrett Camp (who has a smaller role—and public profile—than Kalanick) will earn his way into the billionaire club, too.