(a) No broker, dealer or municipal securities dealer shall effect any transaction in, or induce or attempt to induce the purchase or sale of, any municipal security in contravention of any effective restrictions imposed upon such broker, dealer or municipal securities dealer by the Commission pursuant to sections 15(b)(4) or (5) or 15B(c)(2) or (3) of the Act or by an appropriate regulatory agency pursuant to section 15B(c)(5) of the Act or by a registered securities association pursuant to rules adopted under section 15A(b)(7) of the Act, and no natural person shall be associated with a broker, dealer or municipal securities dealer in contravention of any effective restrictions imposed upon such person by the Commission pursuant to sections 15(b)(6) or 15B(c)(4) of the Act or by an appropriate regulatory agency pursuant to section 15B(c)(5) of the Act or by a registered securities association pursuant to rules adopted under section 15A(b)(7) of the Act.

(b) No broker, dealer or municipal securities dealer that is a member of a registered securities association shall effect any transaction in, or induce or attempt to induce the purchase or sale of, any municipal security, or otherwise act in contravention of or fail to act in accordance with rules adopted by the association, pertaining to remedial activities of members experiencing financial or operational difficulties, as if such rules were applicable to such broker, dealer or municipal securities dealer.

(c) No municipal advisor shall engage in municipal advisory activities in contravention of any effective restrictions imposed upon such municipal advisor by the Commission pursuant to section 15B(c)(2) or (3) of the Act, and no natural person shall be associated with a municipal advisor in contravention of any effective restrictions imposed upon such person by the Commission pursuant to section 15B(c)(4) of the Act.