X0306 4 2019-02-11 0 0000092122 SOUTHERN CO SO 0001354912 Daiss Ann P 30 IVAN ALLEN JR. BLVD., NW ATLANTA GA 30308 0 1 0 0 Comptroller Southern Company Common Stock 2019-02-11 4 A 0 4853 0.00 A 11468 D Southern Company Common Stock 2019-02-11 4 F 0 2268 49.24 D 9200 D Southern Company Common Stock 3818.1001 I 401K Southern Co Restricted Stock Units 0.00 2019-02-11 4 A 0 2410 0.00 A Southern Company Common Stock 2410 2410 D Shares acquired upon vesting of performance share units under Company's Performance Share Program for the 2016-2018 award. The Compensation and Management Succession Committee certified performance on February 11, 2019. Includes accrued dividend equivalent units. Shares withheld to satisfy required state and federal tax withholding requirements. Restricted Stock Units are payable in Southern Company common stock and vest one-third per year on the first, second, and third anniversary of grant date. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements. /s/ Marcia R. DeMar, Attorney-in-Fact for Ann P. Daiss 2019-02-13