I was at a startup company where an employee wanted to sell his stock and had a buyer, and the company said "no, if you want to do your own sale, you will need

I was at a startup company where an employee wanted to sell his stock and had a buyer, and the company said "no, if you want to do your own sale, you will need to hire an auditor in your own dime to determine the value, and we won't let your auditor see the books." And this company was above average in not pulling dirty tricks.