Subject to the terms and conditions of this Agreement, including, without limitation, Section 3.10(b) , the Plan, and except as otherwise provided for in any award or other agreement evidencing a grant of Value Units, twenty-five percent (25%) of each class of the Value Units granted to any Management Unitholder or Operating Unitholder as of any Grant Date shall vest on the first anniversary of such Grant Date, with the remaining portion of each class of such Value Units vesting thereafter in thirty-six (36) substantially equal monthly installments such that one-hundred percent (100%) of each class of the Value Units granted as of any such Grant Date shall become fully vested on the fourth anniversary of such Grant Date. For the avoidance of doubt, the foregoing vesting schedule requires the continued employment (in the case of each Management Unitholder) or Service (in the case of each Operating Unitholder) through each applicable vesting date as a condition to the vesting of the applicable installment of the Value Units granted to such Management Unitholder or Operating Unitholder, as the case may be. Except as otherwise approved by the Board, employment or Service for only a portion of the vesting period, even if a substantial portion, will not entitle any Management Unitholder or Operating Unitholder, as the case may be, to any proportionate vesting. Each holder of Value Units shall make an election under Section 83(b) of the Code with respect to his or her initial receipt of Value Units within 30 days of the issuance of such Value Units and promptly provide a copy of such election to the LLC.