If your broker gave you a 1099-DIV, then you were correct to report your stock liquidation exactly as it appeared on the form. It is also feasible that you may want or need to amend your 2019 tax return; however, you should not do it unless the 1099 matches what your broker reported to the IRS. Otherwise, your return will be a likely trigger for an audit. We would advise you to discuss your concerns with your broker and see if they can change your 1099, at which point you can make an amendment to your prior year return.
