with respect to a Measurement Date that is a Change of Control, the IRR Vesting Amount (as defined below) for such Measurement Date, if greater), less (2) the number of Shares with respect to the Option that had vested and become exercisable prior to such Measurement Date; provided that the Optionee remains continuously employed or engaged in active service by the Company or any of its Subsidiaries (and no Termination of Services occurs) from the Grant Date through such Measurement Date; provided, further, that to the extent a determination by a Third Party Appraiser is undertaken in connection with the determination of the MOIC Vesting Amount for the Termination Measurement Date, the Option shall not vest and become exercisable with respect to such Measurement Date until the date such determination is made and the MOIC Vesting Amount is calculated based on such determination):
(i) MOIC Vesting Amount. For purposes of this Agreement, the “MOIC Vesting Amount” shall, with respect to a Measurement Date, equal:
(A) No Shares if, as of such Measurement Date, the Principal Stockholder MOIC is less than 2.0;
(B) One-third of the shares covered by the Option if, as of such Measurement Date, the Principal Stockholder MOIC equals or exceeds 2.0, but is less than 2.5;
(C) Two-third of the shares covered by the Option if, as of such Measurement Date, the Principal Stockholder MOIC equals or exceeds 2.5, but is less than 3.0; or
(D) All of the shares covered by the Option if, as of such Measurement Date, the Principal Stockholder MOIC equals or exceeds 3.0.
(ii) IRR Vesting Amount. For purposes of this Agreement, the “IRR Vesting Amount” shall, with respect to a Measurement Date that is a Change of Control, equal:
(A) No Shares covered by the Option if, as of such Measurement Date, the Principal Stockholder IRR is less than 20%;
(B) One-half of the shares covered by the Option if, as of such Measurement Date the Principal Stockholder IRR equals or exceeds 20%, but is less than 25%; or
(C) All of the shares covered by the Option if, as of such Measurement Date, the Principal Stockholder IRR equals or exceeds 25%.
(iii) For the avoidance of doubt, the IRR Vesting Amount shall not apply with respect to any Measurement Date that does not occur on the date of a Change of Control (i.e., no portion of the Option will be eligible to become vested and exercisable based on Principal Stockholder IRR on an Initial Public Offering or any Measurement Date thereafter or the Termination Measurement Date).