Lender is asking for personal info, please advise!?

You did not state and maybe you do not want to, but it must be you have not owned the property long and are doing a flip. The bank is most likely concerned if you paid a low price for the property and are making let's say the typical investor $100K, you did not renovate the property correctly. Maybe you just put lipstick on a pig. I do not think you have to disclose your profit and I would not, I would just tell them the information is confidential.