Effective Date of Plan; Termination of Plan. The Plan was originally effective on May 8, 2008, the date of the first approval of the Plan by the holders of the shares entitled to vote at a duly constituted meeting of the stockholders of the Company. This amendment and restatement of the Plan shall also be subject to the approval by the holders of the shares entitled to vote at a duly constituted meeting of the stockholders of the Company. This amendment and restatement of the Plan shall be null and void and of no effect if the foregoing condition is not fulfilled. Awards may be granted under the Plan at any time and from time to time on or prior to February 26, 2024, on which date the Plan will expire except as to Awards then outstanding under the Plan. Such outstanding Awards shall remain in effect until they have been exercised or terminated, or have expired.

The Plan shall be effective on May 24, 2021; provided, however, that the Plan must subsequently be approved by majority vote of the Company’s shareholders in accordance with the rules and regulations of the NASDAQ Stock Market LLC no later than May 23, 2022.

The Plan shall be effective on October 30, 2017; provided, however, that if, and only if, certain options are intended to qualify as Incentive Stock Options, the Plan must subsequently be approved by majority vote of the Company’s stockholders no later than October 30, 2010, and further, that in the event certain Option grants hereunder are intended to qualify as performance-based compensation within the meaning of Section 162(m) of the Code, the requirements as to stockholder approval set forth in Section 162(m) of the Code are satisfied.

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.

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 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.

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

Effective Date and Term of Plan. The Plan shall become effective on the date on which it is adopted by the Board. No Awards shall be granted under the Plan after the expiration of 10 years from the earlier of # the date on which the Plan was adopted by the Board or # the date the Plan was approved by the Company’s stockholders, but Awards previously granted may extend beyond that date.

Effective Date of Termination. “Effective Date of Termination” means the date on which a Qualifying Termination occurs which triggers the payment of Severance Benefits hereunder.

This Plan, as amended and restated, is effective January 1, 2014 and will remain in effect until the tenth (10th) anniversary of the approval of the Plan by the shareholders of the Company at the 2014 annual meeting or, if earlier, the date the Plan is terminated by the Committee or the Board of Directors as provided herein.