Normally an investor has the right to inspect the accounting books. But he needs to ask it in a formal manner with a letter, he cannot just come and ask for the books you could tell I do not have them ready for you. Be careful this is normally an atypical situation (as numbers are reviewed during the shareholders meetings) and i strongly suggest that you consult your company's lawyer and use him to follows this case. Laws can be slightly different depending states and companies bylaws.