Form 5471 is required to be filed for US persons with respect to holding (shares) in certain foreign corporations. The penalty for non filing is USD 10000.
Also, Schedule O needs to be filed along with the same for reporting of acquisition/ disposition of the foreign stock.
(even if no money made, company folded up etc.) The above, as a matter of caution, should be filed as they are compulsorily required information returns. I'd suggest filling up the forms but getting it screened by a CPA.
You always have to file a tax return, even if you made nothing. You also have to pay the C Corp fees as well.
You can certainly file it on your own without an accountant -- it sounds pretty straight forward.