Yes, but try to get all the documentation you can, so you can show the investment is worthless.
Also, document attempts made to get your investment back.
This loss then is reported as an Investment sale.
The sales date is when it became worthless, the sale price is $0.
To
enter your Investments sold
Click
on Federal Taxes
Click
on Wages and Income
Click
on I'll choose what I work on
Scroll
down to Investments
On
Stocks, Bonds, Other, click the start or update button