Form 10-K

Form 10-K is the annual report a company files under Section 13 or Section 15(d) of the Securities Exchange Act of 1934. General Instruction A says the form "shall be used for annual reports" under those sections "for which no other form is prescribed," and sets how long after the fiscal year end it is due, by the size of the filer. General Instruction D requires the report to be signed by the company's principal executive officer, principal financial officer, controller or principal accounting officer, and at least a majority of the board. That is why CFO Tribune builds its roster from the signature page of each company's latest 10-K. A later 8-K that reports a change supersedes the roster seat.