Do I need to file the 8621 form (or other forms) if i received dividends or sold non-US ETFs through Robinhood?

@ale_marcano , without knowing the details of your transactions / situation , from the information on your post ,  it appears  that since Robinhood  is a US regulated entity, there is no need for you to file  form 8621 or derivatives of that form.   You are simply reporting all your financial activities  as if you were in USA. 

Is there more I can do for you ?