Scheduled Vesting. The number of Units that have been earned during the Performance Period, as determined by the Committee in accordance with [Exhibit 1], will vest on the Scheduled Vesting Date, so long as your Service has been continuous from the Grant Date to the Scheduled Vesting Date. For these purposes, the “Scheduled Vesting Date” means the date the Committee certifies # the degree to which

Scheduled Vesting. If you remain a member of the Board continuously from the Grant Date specified on the cover page of this Agreement, then the Units will vest in the numbers and on the dates specified in the Vesting Schedule on the cover page of this Agreement.

Accelerated Vesting. Vesting of the Units may be accelerated during the term of the Award at the discretion of the Committee in accordance with [Section 16.2] of the Plan and under the following circumstances:

Vesting Acceleration. Effective as of March 24, 2020, Participants who cease to be Employees due to the sale of Pivotal LNG, Inc. will be deemed to be fully vested in their benefits and Accounts for all purposes hereunder.

Vesting Schedule. Subject to the special vesting rules set forth in Sections 7, 14 and 15, the Stock Units shall vest in accordance with the Vesting Schedule specified in the Award Agreement to the extent that the Employee is continuously employed by the Company or its Subsidiaries until the Vesting Dates specified in the Vesting Schedule and has not terminated employment on or before such dates. An Employee will not be treated as remaining in continuous employment if the Employee’s employer ceases to be a Subsidiary of the Company.

Accelerated Vesting. Subject to Section 9.03 below, in the event that # a Change in Control occurs and # a Participant’s employment or service is terminated by the Company, its successor or an affiliate thereof without Cause or is terminated by the Participant for Good Reason (if applicable), in each case on or after the effective date of the Change in Control but prior to the second anniversary of the Change in Control, then any unvested portion of such Participant’s Account shall vest in full regardless of such Participant’s vested status under the Savings Plan.

Vesting Acceleration. Effective as of January 1, 2019, # Gulf Power Company will cease to be an Employing Company under the Plan; and # Participants who cease to be Employees due to the sale of Gulf Power Company will be deemed to be fully vested in their Accounts for all purposes hereunder.

Reverse Vesting. The Committee in its sole discretion may allow a Participant to exercise unvested Non-ISOs, in which case the Shares then issued shall be Restricted Shares having analogous vesting restrictions to the unvested Non-ISOs.

This option will become exercisable (“vest”) as to 25% of the original number of Shares on the first anniversary of the Vesting Commencement Date (as defined below) and as to an additional 6.25% of the original number of Shares at the end of each successive quarter following the first anniversary of the Vesting Commencement Date until the fourth anniversary of the Vesting Commencement Date. On the fourth anniversary of the Vesting Commencement Date, this option will be exercisable as to all Shares. For purposes of this Agreement, “Vesting Commencement Date” shall mean ​.

This option will become exercisable (“vest”) in accordance with the vesting schedule set forth in the Notice of Grant.