Plan Year. The twelve consecutive month period commencing on January 1 of each year.

Retirement Plan. The Anadarko Retirement Plan, as amended from time to time.

Unfunded Plan. It is the Company’s intention that the Plan be unfunded. The Company is not required to set aside any assets for payment of the benefits provided under the Plan, and no Participant will have a security interest in any Award.

Plan Administration. The Administrative Committee appointed by the Board of Directors, or such other committee as may be appointed by the Board of Directors from time to time, shall serve as the Plan Administrator. The Plan Administrator is responsible for the general administration and management of this Plan and shall have all powers and duties necessary to fulfill its responsibilities, including, but not limited to, the discretion to interpret and apply this Plan and to determine all questions relating to eligibility for benefits. This Plan shall be interpreted in accordance with its terms and their intended meanings. However, the Plan Administrator and all plan fiduciaries shall have the discretion to interpret or construe ambiguous, unclear, or implied (but omitted) terms in any fashion they deem to be appropriate in their sole discretion, and to make any findings of fact needed in the administration of this Plan. The validity of any such interpretation, construction, decision, or finding of fact shall not be given de novo review if challenged in court, by arbitration, or in any other forum, and shall be upheld unless clearly arbitrary or capricious.

Plan Document. The Employee acknowledges receipt of a copy of the Plan and agrees that the terms and conditions of the Employee’s Award shall be as set forth in the Plan and this Agreement. Terms used in this Agreement that are defined in the Plan shall have the same meaning as they have in the Plan. In the event of any conflict between the terms and conditions of the Plan and this Agreement, the Plan shall control.

Unfunded Plan. Participants shall have no right, title, or interest whatsoever in or to any investments that the Company, and/or its Subsidiaries, and/or Affiliates may make to aid it in meeting its obligations under the Plan. Nothing contained in the Plan, and no action taken pursuant to its provisions, shall create or be construed to create a trust of any kind, or a fiduciary relationship between the Company and any Participant, beneficiary, legal representative, or any other person. To the extent that any person acquires a right to receive payments from the Company, and/or its Subsidiaries, and/or Affiliates under the Plan, such right shall be no greater than the right of an unsecured general creditor of the Company, a Subsidiary, or an Affiliate, as the case may be. All payments to be made hereunder shall be paid from the general funds of the Company, a Subsidiary, or an Affiliate, as the case may be and no special or separate fund shall be established and no segregation of assets shall be made to assure payment of such amounts except as expressly set forth in the Plan. The Plan is not subject to ERISA.

Plan Document. This Agreement and the Award are subject to all the provisions of the Plan, and to all interpretations, rules and regulations that may, from time to time, be adopted and promulgated by the Committee pursuant to the Plan. If there is any conflict between the provisions of this Agreement and the Plan, the provisions of the Plan will govern.

Plan Definitions. Except where the context clearly implies or indicates the contrary, a word, term, or phrase used but not defined in these Award Terms will have the meaning set forth in the Plan.

Plan Headings. The headings in this Plan are for the purpose of convenience only and are not intended to define or limit the construction of the provisions hereof.

Plan Incorporated. You accept the PBRSUs hereby granted subject to all the provisions of the Plan, which are incorporated into this Agreement, including the provisions that authorize the Committee to administer and interpret the Plan and which provide that the Committee’s decisions, determinations and interpretations with respect to the Plan are final and conclusive on all persons affected thereby. In the event of a conflict between this Agreement and the Plan, the Plan shall prevail.