40 Pa. C.S. § 3517
Except as otherwise specifically provided in section 3503 (relating to contents of plan of conversion), from the date a plan of conversion is adopted until the effective date of theplan of conversion, a person may not directly or indirectly offer to acquire, make an announcement to acquire or acquire in any manner, including making a filing with the department for acquisition under a statute or regulation of this Commonwealth, the beneficial ownership of 10% or more of a class of a voting security of the attorney or the stock company that will be the successor of the reciprocal insurer or of a person that controls the voting securities of the attorney or the stock company that will be the successor of the reciprocal insurer.
40 Pa.C.S. § 3517