Because vesting periods are usually four years and he joined Facebook three years ago, he's giving up at most 1/4 of his stock related compensation. Because Tay

Because vesting periods are usually four years and he joined Facebook three years ago, he's giving up at most 1/4 of his stock related compensation. Because Taylor joined Facebook through an acquisition, it's possible that his vesting is shorter than four years. He probably has restricted stock units and common stock with a buyback provision. As far as I know, Facebook stopped granting options before Taylor joined Facebook.