Regarding C, usually you need to wait a bit post IPO until the investors had opportunity to sell their stock. Only THEN it's your turn. It's called lock-up period and lasts usually 180 days (half a year). Just keep that in mind.
Also during sale, investors might choose to execute their liquidation preferences, which means that your shares might become worthless. Employees who paid hundreds of thousands of USD annually in opportunity cost have no such clauses to get their money back.
Also during sale, investors might choose to execute their liquidation preferences, which means that your shares might become worthless. Employees who paid hundreds of thousands of USD annually in opportunity cost have no such clauses to get their money back.