It shall be unlawful for any person, directly or indirectly, by use of the mails or by any means or instrumentality of interstate commerce or of any facility of a national securities exchange or otherwise, to make a tender offer for, or a request or invitation for tenders of, any class of any equity security which is registered pursuant to section 78
l of this title, or any equity security of an insurance company which would have been required to be so registered except for the exemption contained in section 78
l(g)(2)(G) of this title, or any equity security issued by a a closed-end investment company registered under the Investment Company Act of 1940 [
15 U.S.C. 80a–1 et seq.], if, after consummation thereof, such person would, directly or indirectly, be the beneficial owner of more than 5 per centum of such class, unless at the time copies of the offer or request or invitation are first published or sent or given to security holders such person has filed with the Commission a statement containing such of the information specified in
section 78m(d) of this title, and such additional information as the Commission may by rules and regulations prescribe as necessary or appropriate in the public interest or for the protection of investors. All requests or invitations for tenders or advertisements making a tender offer or requesting or inviting tenders of such a security shall be filed as a part of such statement and shall contain such of the information contained in such statement as the Commission may by rules and regulations prescribe. Copies of any additional material soliciting or requesting such tender offers subsequent to the initial solicitation or request shall contain such information as the Commission may by rules and regulations prescribe as necessary or appropriate in the public interest or for the protection of investors, and shall be filed with the Commission not later than the time copies of such material are first published or sent or given to security holders. Copies of all statements, in the form in which such material is furnished to security holders and the Commission, shall be sent to the issuer not later than the date such material is first published or sent or given to any security holders.