As I was retired when I exercised the option I did not receive a W-2. However, I first advised the company that I would need a 1099-B to report the proceeds as a stock sale. Subsequently, I received contradictory info indicating I needed to report it as profit from business on Schedule C so I requested a 1099-MISC from the company as well. The latter makes no sense to me as I am retired and do not operate a business.
