17 C.F.R. § 210.8-08
At the date of filing, financial statements included in filings other than filings on Form 10-K must be not less current than the financial statements that would be required in Forms 10-K and 10-Q if such reports were required to be filed. If required financial statements are as of a date 135 days or more before the date a registration statement becomes effective or proxy material is expected to be mailed, the financial statements shall be updated to include financial statements for an interim period ending within 135 days of the effective or expected mailing date. Interim financial statements must be prepared and presented in accordance with paragraph (b) of this section.
(b) If the effective date or anticipated mailing date falls after 45 days but within 90 days of the end of the smaller reporting company's fiscal year, the smaller reporting company is not required to provide the audited financial statements for such year end provided that the following conditions are met:
[73 FR 953, Jan. 4, 2008, as amended at 74 FR 18616, Apr. 23, 2009]