A lot of this information is also available in the company’s Articles of Incorporation. Can’t hurt to ask in the interview, but it’s probably a good idea to pull the actual filing anywhere you’re seriously considering an offer (if it’s a Delaware corporation, you have to pay a registered agent to get these documents, it’s usually $50-$100.)

Typically includes things like total outstanding shares, conversion price of the various preferred rounds, liquidation preference for the preferred shares, etc. The delta between the most recent preferred round and the 409a is the best approximation of the actual value of the equity at the time of the grant.