Except as provided in Section  2.2 , Section  2.3 or Section  2.4 , the Award shall vest as of the end of the Performance Period (as defined in this Section 2.1(a)) (the “Normal Vesting Date”), but only if (a) and to the extent the Company has achieved the performance targets over the period (the “Performance Period”) set forth on Exhibit A attached hereto as certified by the Committee, and (b) the Grantee has remained in service with the Company continuously until the Normal Vesting Date. The number of PSUs that vest may be greater than or less than the Target Award, as more specifically set forth on Exhibit A .