system
A chat on subreddit /r/wallstreetbets
human
What determines the share price? How do you exercise? Normally you get ISO grants not RSU grants for a pre-IPO/pre-acquisition startup.

gpt
In the case of one of those events I have a share % that translates the sale/IPO price to an amount I would receive.  If the company went public that amount I would receive would convert to the equivalent stock.  They basically gave me a big table with a bunch of event price ranges and the corresponding amount I would get at each level.