Levandowski got $250 million in Uber stock during the Otto acquisition and per a story on Techcrunch as of May 3rd, none of it had vested yet. Doesn't seem likely it will either.
If there is any justice, Google will claw back significant fractions of the $120M it paid him through arbitration. It's unacceptable for this guy to sail off into the sunset after doing what he has done (if indeed it is proven that he did it).
The leaked termination letter in the comments above indicates that he is being fired with cause, which means that he will get little or nothing at the end of all this.
Wouldn't that be the case only if his employment was that valuable? If the acquisition was purely for IP, his employment could just be a byproduct of that.