Subject to Section 2(c) below, fifty percent (50%) of any Earned Performance Units shall vest on the last day of the Performance Period, twenty-five percent (25%) of any Earned Performance Units shall vest on the first (1 st ) anniversary of the last day of the Performance Period, and the remaining twenty-five percent (25%) of any Earned Performance Units shall vest on the second (2 nd ) anniversary of the last day of the Performance Period (each such date, a “Vesting Date,” and each period between the first day of the Performance Period and a Vesting Date, a “Vesting Period”). For the avoidance of doubt, if a Control Change Date occurs during the Performance Period, the last day of the Performance Period shall be the Control Change Date for all purposes under this Agreement, including this Section 2(b).