You should absolutely ask about A) and be very suspicious if they refuse to tell you. No one can answer B) with any real confidence because they don’t have a crystal ball. C) is almost always going to be at IPO or when the company sells, though maybe if you’re extremely important they’ll let you negotiate to sell some at a later round, though given this complicates things in most cases they’ll likely not want to bother with it unless you have a ton of leverage. D) is almost always going to be one year cliff, then rest monthly over four years. That should also be extremely easy information to get.