Facebook is offering new CS grads from top schools $180k+ a year plus $30k+ signing bonus. That's cash. Most startups can't afford that unless they are very well funded.
$180k salary? I know they offer some ridiculous numbers for top candidates but that seems high for any new grad. That'd push them near $250k with stock.
See here : https://www.levels.fyi/salary/Facebook/SE/E3/
It is closer to a 155K + signing Bonus.