Effective Date. The Plan shall become effective on the date it is approved by the requisite vote of the Company’s Board, subject to approval by the Company’s shareholders. If the shareholders fail to approve the Plan within 12 months of its adoption by the Board, any Awards already made will be null and void and no additional Awards shall be made.

Effective Date of the Plan. The Plan shall become effective as of February 4, 2018; provided that this Plan is approved and ratified by the shareholders of the Company no later than June 30, 2017. The Plan shall remain in effect until it has been terminated pursuant to Section 4.3.

Plan Effective Date and Term. This Plan, as amended and restated, was adopted by the Company to be effective on the Effective Date. No Awards may be granted under this Plan on and after May 19, 2026. However, any Award granted prior to such termination, and the authority of the Board or Committee to amend, alter, adjust, suspend, discontinue, or terminate any such Award or to waive any conditions or rights under such Award in accordance with the terms of this Plan, shall extend beyond such termination date until the final disposition of such Award.

The Plan shall be effective on January 20, 2011, the date it was approved by the Board of Directors of the Company (the “Effective Date”), subject to approval by the Company’s shareholders within the 12-month period immediately thereafter.

Effective Date of the Plan. The original effective date of the Plan was November 25, 1997, the date of its adoption by the Board, subject to approval by the shareholders of Energen holding not less than a majority of the shares present and voting at its January 1998 Annual Meeting. From time to time the Board has made amendments to the Plan that require shareholder approval for effectiveness and the shareholders of Energen have approved such amendments, each of which is deemed to be a re-adoption by the Board and re-approval by the shareholders of the Plan for the purposes of Code Section 422(b)(2). The “ISO Effective Date” is the earlier of the dates of such re-adoption and re-approval of the most recent shareholder approved Plan amendment or restatement.

Effective Date of the Plan. The Plan is effective on May 1, 2016.

Effective Date; Administration of Plan. This plan was originally effective October 31, 2003, was amended and restated effective for terminations occurring after November 1, 2011, and is further amended for clarification and restated as set forth herein, effective for terminations occurring after November 1, 2011. The plan may be amended or terminated at any time by the Committee or the Board, in their discretion. The Committee shall have full authority, in its discretion to interpret and apply the provisions of the plan, to establish rules and procedures

As between Assignor and Assignee, the effective date for this Assignment and Acceptance shall be ​, 20​ (the “Effective Date”); provided, that, the following conditions precedent have been satisfied on or before the Effective Date:

Effect; Effective Date. Upon # delivery to the Agent of an assignment (or, to the extent applicable, an agreement incorporating such an assignment by reference pursuant to a Platform as to which the Agent and the parties to such assignment are participants), together with any consents required by [Sections 13.3.1 and 13.3.2]2], # payment of a $3,500 fee to the Agent for processing such assignment (unless the Purchaser is an Affiliate of the assigning Lender or such fee is waived by the Agent) and # the delivery by the Purchaser to the Agent of an Administrative Questionnaire, such assignment shall become effective on the effective date specified in such assignment. The assignment shall contain a representation by the Purchaser to the effect that none of the consideration used to make the purchase of the Commitment and Loans under the applicable assignment agreement constitutes “plan assets” as defined under ERISA and that the rights and interests of the Purchaser in and under the Loan Documents will not be “plan assets” under ERISA. On and after the effective date of such assignment, such Purchaser shall for all purposes be a Lender party to this Agreement and any other Loan Document executed by or on behalf of the ​ and shall have all the rights and obligations of a Lender under the Loan Documents, to the same extent as if it were an original party thereto, and the transferor Lender shall be released with respect to the Commitment and Loans assigned to such Purchaser without any further consent or action by the Borrowers, the ​ or the Agent. In the case of an assignment covering all of the assigning Lender’s rights and obligations under this Agreement, such Lender shall cease to be a Lender hereunder but shall continue to be entitled to the benefits of, and subject to, those provisions of this Agreement and the other Loan Documents which survive payment of the Obligations and termination of the applicable agreement. Any assignment or transfer by a Lender of rights or obligations under this Agreement that does not comply with this [Section 13.3] shall be treated for purposes of this Agreement as a sale by such Lender of a participation in such rights and obligations in accordance with [Section 13.2]. Upon the consummation of any assignment to a Purchaser pursuant to this [Section 13.3.3], the transferor Lender, the Agent and the Borrowers shall, if the transferor Lender or the Purchaser desires that its Loans be evidenced by Notes, make appropriate arrangements so that new Notes or, as appropriate, replacement Notes are issued to such transferor Lender and new Notes or, as appropriate, replacement Notes, are issued to such Purchaser, in each case in principal amounts reflecting their respective Commitments, as adjusted pursuant to such assignment.

Participation Effective Date. The effective date of the Participant’s participation in the Plan is April 1, 2017.