15 Pa.C.S. § 2323

Any attempted transfer of shares of a statutory close corporation in violation of any transfer restriction binding on the transferee shall be ineffective. Any attempted transfer of shares of a statutory close corporation in violation of any transfer restriction not binding on the transferee shall give the corporation the option, exercisable by notice and payment within 30 days after presentation of the shares for registration in the name of the transferee, to purchase the shares from the transferee for the same price and terms as contemplated for the ineffective transfer, unless such transfer was not intended to be a transfer for value.