Every national securities exchange and every registered national securities association must file with the Commission and with the Securities Investor Protection Corporation such information as is required by § 249.635 of this chapter on Form X-17A-19 within five business days of the occurrence of the initiation of the membership of any person or the suspension or termination of the membership of any member. Form X-17A-19 must be filed with the Commission electronically on EDGAR in accordance with the EDGAR Filer Manual, as defined in 17 CFR 232.11 (Rule 11 of Regulation S-T), and must be filed in accordance with the requirements of Regulation S-T. Nothing in this section shall be deemed to relieve a national securities exchange or a registered national securities association of its responsibilities under § 240.17a-5(b)(5) except that, to the extent a national securities exchange or a registered national securities association promptly files a report on Form X-17A-19 including therewith, inter alia, information sufficient to satisfy the requirements of § 240.17a-5(b)(5), it shall not be required to file a report pursuant to § 240.17a-5(b). Upon the occurrence of the events described in this paragraph, every national securities exchange and every registered national securities association shall notify in writing such member of its responsibilities under § 240.17a-5(b).