Computershare sold 4 shares on my behalf that triggered 1099-B. The forms advices to figure out cost-basis based on my personal records. These stocks are also marked as 'noncovered'. I have acquired these stocks as employee stock purchasing plan, for past 10 years. I have acquired over 1000 such shares, so i do i figure which 4 were sold and when they were acquired? Or can i just pick the month when stock was high, to minimize the impact of tax?
