True. But if your target comp over the first four years was hypothetically $900K based on salary+bonus+RSUs and the stock went up significantly during that time you would end up making more. Of course if the stock goes down....

I think I heard that Amazon bases future grants on the assumption that the stock price will increase 15%. But I can tell you that my salary+bonus+RSU when they made an offer was based on the stock price not changing.