Yes and no. Yes: I believe you're well within your rights to ask to see the financials of a company you're about to become a co-owner of. No: If you're asking

Yes and no. Yes: I believe you're well within your rights to ask to see the financials of a company you're about to become a co-owner of. No: If you're asking for proof because you distrust them, that's a HUGE red flag. Don't work with people you distrust. Even if it's just a hunch, go with your gut and just walk away.