I bought and sold stock on of a company that issues a K1 on one day ( held it less than a day). didnt get a K1 by April so I filed an extension. Today is Sep 16 and I havent gotten a K1. I didnt get any income or distributions from the company, only a short tetm loss, since I traded it. I am unable to get any information when I call or email them. If I change my cost basis to zero since I dont know if I have adjustments, can I file my taxes?
