From the NYSE Listed Company Manual:
A company that fails to file its annual report (Forms 10-K, 10-KSB, 20-F, 40-F or N-CSR) with the SEC in a timely manner will be subject to the following procedures:
Once the Exchange identifies that a company has failed to file a timely periodic annual report with the SEC by the later of (a) the date that the annual report was required to be filed with the SEC by the applicable form or (b) if a Form 12b-25 was timely filed with the SEC, the extended filing due date for the annual report, the Exchange will notify the company in writing of the procedures set forth below. For purposes of this Section 802.01E, the later of these two dates will be referred to as the "Filing Due Date."
Within five days of receipt of this notification, the company will be required to (a) contact the Exchange to discuss the status of the annual report filing, and (b) issue a press release disclosing the status of the filing, noting the delay, the reason for the delay and the anticipated filing date, if known. If the company has not issued the required press release by the fifth day following receipt of this notification, the Exchange will itself issue a press release stating that the company has failed to timely file its annual report with the SEC.
During the six-month period from the Filing Due Date, the Exchange will monitor the company and the status of the filing, including through contact with the company, until the annual report is filed. If the company fails to file the annual report within six months from the Filing Due Date, the Exchange may, in its sole discretion, allow the company's securities to be traded for up to an additional six-month trading period depending on the company's specific circumstances. If the Exchange determines that an additional trading period of up to six months is not appropriate, suspension and delisting procedures will commence in accordance with the procedures set out in Section 804.00 of the Listed Company Manual. A company is not eligible to follow the procedures outlined in Sections 802.02 and 802.03 with respect to this criteria.
In determining whether an additional up to six-month trading period is appropriate, the Exchange will consider the likelihood that the filing can be made during the additional period, as well as the company's general financial status, based on information provided by a variety of sources, including the company, its audit committee, its outside auditors, the staff of the SEC and any other regulatory body. The Exchange strongly encourages companies to provide ongoing disclosure on the status of the annual report filing to the market through press releases, and will also take the frequency and detail of such information into account in determining whether an additional six-month trading period is appropriate.
If the Exchange determines that an additional up to six-month trading period is appropriate and the company fails to file its periodic annual report by the end of the additional period, suspension and delisting procedures will commence in accordance with the procedures set out in Section 804.00.