If, subsequent to the filing of the statements required by §§ 23.61-23.63 (relating to duplicate information; reports subsequent to solicitation; opposition solicitation), additional persons become participants in a solicitation, there shall be filed with the Insurance Department by or on behalf of each person a statement in duplicate containing the information specified by Schedule B, as described in Subchapter F (relating to required information for Schedules A and B), within 3 business days after the person becomes a participant (or within any longer period the Insurance Department may authorize upon a showing of good cause).
31 Pa. Code § 23.64