9143. Ex Parte Communications
(a) Prohibited Communications
Unless on notice and opportunity for all Parties to participate, or to the extent required for the disposition of ex parte matters as authorized by the Rule 9000 Series:
(1) No Party, or counsel to or representative of a Party, or Interested FINRA Staff shall make or knowingly cause to be made an ex parte communication relevant to the merits of a proceeding to an Adjudicator who