17 CFR §249.635
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
This form shall be completed and filed by each national securities exchange or registered national securities association as required by § 240.17a-19 of this chapter within 5 business days of the occurrence of the initiation of the membership of any person or the suspension or termination of the membership of any of its members.