In 2017 I exercised and held 30,000 shares of stock. I reported it on my tax return and payed taxes on the difference of the price I payed for the stock and the real market value at the time. In 2019 I sold the stock and reported the exercise price as the original price I payed for the stock instead of the real market value (which I believe should be the new price to determine the cost basis and not get double taxed)
If I did make a mistake, as I believe I did, I will need to amend my return as I filed it and payed too much tax.
Can someone tell me if I am correct and need to amend? Did I report my cost basis wrong?
