This excerpt taken from the UGI DEF 14A filed Jan 3, 2007.
No Stock shall be issued in connection with any Grant hereunder unless and until all legal requirements applicable to the issuance of such Stock have been complied with to the satisfaction of the Committee. The Committee shall have the right to condition any Grant made to any Participant hereunder on such Participants undertaking in writing to comply with such restrictions on his or her subsequent disposition of such shares of Stock as the Committee shall deem necessary or advisable, and Certificates representing such shares may be legended to reflect any such restrictions. Certificates representing shares of Stock issued under the Plan will be subject to such stop-transfer orders and other restrictions as may be required by applicable laws, regulations and interpretations, including any requirement that a legend be placed thereon. No Participant shall have any right as a shareholder with respect to Stock covered by a Grant until shares have been issued to the Participant.