(a) Notification of registration. Notifications of registration pursuant to section 5(a) of the act (49 Stat. 812; 15 U.S.C. 79(e) shall be filed on Form U-5A.

(b) Registration statement. Every registered holding company and person registering as a company proposing to become a holding company, shall file with the Commission a registration statement on Form U-5B within 90 days after becoming a registered holding company.

(c) Annual report. Every registered holding company shall file, on or before the first of May in the year following that in which it filed its registration statement, and in every succeeding year, an annual report on Form U5S (§ 259.5s of this chapter): Provided, however, That where any holding company system includes more than one registered holding company, the annual report shall be filed by the top registered holding company in such system and shall be signed on behalf of each registered holding company in such system by the authorized officer of each such registered holding company.