The Performance Units subject to this Performance Award shall vest only upon the achievement of all or a portion of certain Performance Objectives, which must be achieved during the Performance Period. The Performance Objectives and the extent to which achievement of all or a portion of the Performance Objectives will result in the vesting of the Performance Units shall be described in Exhibit A attached hereto. Subject to such other terms and conditions set forth in this Agreement, the Participant shall not be entitled to payment for any portion of the Performance Units subject to this Performance Award until the Administrator determines the number of Performance Units, if any, which have vested.