Except as otherwise provided herein, this Agreement (including the Exhibits and Schedules) may not be modified, amended, or supplemented without the prior written consent of the Ultra Entities and the Required Consenting Parties; provided , that any modification of, amendment or supplement to, any exhibit hereto that materially and adversely affects any Plan Support Party shall require the prior written consent of each Plan Support Party so affected (it being understood that any materially adverse change in the economic treatment provided to any holder of HoldCo Notes or HoldCo Equity Interests under the Plan Term Sheet, including any change to the “Equity splits” set forth in the Plan Term Sheet, shall constitute a material adverse change for purposes of this section); provided , further , that the prior written consent of all Parties shall be required to modify, amend or supplement (a) any of Sections 1 , 7 , 8 , 9 , or 25 hereof or (b) the definition of “Majority Consenting HoldCo Noteholders,” “Majority Consenting HoldCo Equityholders,” or “Required Consenting Parties” herein.