An annual or transition report (when an issuer changes its fiscal year-end) under Section 13 or 15(d) of the Securities Exchange Act of 1934 (Exchange Act).
A shell company report under Section 13 or 15(d) of the Exchange Act.
It is most often used as an annual report or a registration statement. Reporting companies file Form 20-Fs with the SEC to disclose comprehensive business and financial information about themselves in each of these cases.
A foreign private issuer reporting company must file its annual report on Form 20-F within four months after the end of its fiscal year.