17 CFR § 230.473 - Delaying amendments.
(a) An amendment in the following form filed with a registration statement, or as an amendment to a registration statement which has not become effective, shall be deemed, for the purpose of section 8(a) of the Act, to be filed on such date or dates as may be necessary to delay the effective date of such registration statement (1) until the registrant shall file a further amendment which specifically states as provided in paragraph (b) of this section that such registration statement shall thereafter become effective in accordance with section 8(a) of the Act, or (2) until the registration statement shall become effective on such date as the Commission, acting pursuant to section 8(a), may determine:
(b) An amendment which for the purpose of paragraph (a)(1) of this section specifically states that a registration statement shall thereafter become effective in accordance with section 8(a) of the Act, shall be in the following form:
(c) An amendment pursuant to paragraph (a) of this section which is filed with a registration statement shall be set forth on the facing page thereof. Any such amendment filed after the filing of the registration statement, any amendment altering the proposed date of public sale of the securities being registered, or any amendment filed pursuant to paragraph (b) of this section may be made by telegram, letter, or facsimile transmission. Each such telegraphic amendment shall be confirmed in writing within a reasonable time by the filing of a signed copy of the amendment. Such confirmation shall not be deemed an amendment.
(d) No amendments pursuant to paragraph (a) of this section may be filed with a registration statement on Form F–7, F–8 or F–80 (§ 239.37, § 239.38 or § 239.41 of this chapter); on F–10 (§ 239.40 of this chapter) relating to an offering being made contemporaneously in the United States and the issuer's home jurisdiction; on Form S–8 (§ 239.16b of this chapter); on Form S–3 or F–3 (§ 239.13 or § 239.33 of this chapter) relating to a dividend or interest reinvestment plan; on Form S–3 or Form F–3 relating to an automatic shelf registration statement; or on Form S–4 (§ 239.25 of this chapter) complying with General Instruction G of that Form.