Claure contractually will be awarded $80 million if he gets Sprint's stock price to $8 before May 31, 2019. It has to on average stay above $8 for a 150-day period.
http://www.fiercewireless.com/story/sprint-extends-claures-contract-until-2019-will-give-him-10m-shares-if-he-g/2015-08-12
IMHO, considering he gets five years to do it, the contract goal should have been at least $10 a share.