Section 2923 - Issuance and retention of shares(a) General rule.--Except as otherwise provided by a statute, rule or regulation applicable to a particular profession, all of the ultimate beneficial owners of shares in a professional corporation shall be licensed persons and any issuance or transfer of shares in violation of this restriction shall be void. A shareholder of a professional corporation shall not enter into a voting trust, proxy or any other arrangement vesting another person (other than a person who is qualified to be a direct or indirect shareholder of the same corporation) with the authority to exercise the voting power of any or all of his shares, and any such purported voting trust, proxy or other arrangement shall be void.(b) Ownership by estate.--Unless a lesser period of time is provided in a bylaw adopted by the shareholders or in a written agreement among the shareholders of the corporation, the estate of a deceased shareholder may continue to hold shares of the professional corporation for a reasonable period of administration of the estate, but the personal representative of the estate shall not by reason of the retention of shares be authorized to participate in any decisions concerning the rendering of professional service.(c) Interstate application.--Where a person who is a licensed person under the laws of another jurisdiction engages in activities in this Commonwealth that would be unlawful unless that person were also a licensed person under the laws of this Commonwealth, shares of a professional corporation shall not be issued to or retained by or on behalf of him unless he is also a licensed person under the laws of this Commonwealth. Except as provided in the preceding sentence, this chapter shall not be construed to require that any proportion or number of the holders or beneficial owners of a professional corporation who are licensed persons shall be licensed persons under the laws of this Commonwealth.1988, Dec. 21, P.L. 1444, No. 177, § 103, effective 10/1/1989. Amended 1990, Dec. 19, P.L. 834, No. 198, § 102, imd. effective; 1992, Dec. 18, P.L. 1333, No. 169, § 3, effective in 60 days; 1994, Dec. 7, P.L. 703, No. 106, § 4, effective in 60 days; 2001, June 22, P.L. 418, No. 34, § 2, effective in 60 days.