Their level of secrecy should tell you how serious they are. If they are too opaque, my advice would be to switch to a mostly cash comp.
I don’t think being secretive about the exact details of the cap table is indicative of anything.
They should be able to tell you broadly how many shares there are and how valuable your equity grant is tho.
I disagree completely.
That being said I believe company’s and founders should be as transparent as possible but sometimes that can come at a price and so it’s not ideal to be completely forthcoming.