17 C.F.R. § 240.15aa-1
Registration of a national or an affiliated securities association
Any application for registration of an association as a national, or as an affiliated, securities association shall be submitted on Form 15A. Filings on Form 15A (§ 249.801 of this chapter) submitted pursuant to this section shall be filed electronically on EDGAR in accordance with the requirements of 17 CFR part 232 (Regulation S-T).