At least at Amazon they gave you a choice pre vest between - sell all when they vest, sell enough to pay taxes, and sell none. I always chose option 1. This

At least at Amazon they gave you a choice pre vest between - sell all when they vest, sell enough to pay taxes, and sell none. I always chose option 1. This is like personal finance 101. And for the company the purpose of RSUs instead of cash is to not deplete cash reserves.