Yes, you'll need to report the stock sales. I assume you received a Form 1099-B from the broker.
TurboTax
also has another free product called
the TurboTax Free File Program. It is free for both Federal and
State--IF you meet just one of the qualifications. It can handle all
the usual forms without the limitations of regular Free Edition, and can report capital gains/losses from your stock sales.
You have to meet only ONE of these qualifications:
1) 2018 AGI of $34,000 or less
or
2) Eligible for EIC (earned income credit)
or
3) Active duty military including Reservists/ National Guard with military W-2 and 2018 AGI of $66,000 or less
NOTE: If you switch to Free File Program by that method, and
find out later you don't qualify, you won't be able to go back to
regular Online TurboTax in that same account. So instead of switching
that way, if you wish you could start a new account (User ID) at the
Free File Program website, which would maintain the option of returning
to the other Online TurboTax account, if necessary.