17 CFR 230.134b: b Statements of additional information.

For the purpose only of Section 5(b) of the Act (15 U.S.C. 77e(b)), the term “prospectus” as defined in Section 2(a)(10) of the Act (15 U.S.C. 77b(a)(10)) does not include a Statement of Additional Information filed as part of a registration statement on Form N-1A (§ 239.15A and § 274.11A of this chapter), Form N-2 (§ 239.14 and § 274.11a-1 of this chapter), Form N-3 (§§ 239.17a and 274.11b of this chapter), Form N-4 (§§ 239.17b and 274.11c of this chapter), or Form N-6 (§§ 239.17c and 274.11d of this chapter) transmitted prior to the effective date of the registration statement if it is accompanied or preceded by a preliminary prospectus meeting the requirements of § 230.430.