X0306 4/A 2018-10-01 2019-01-02 0 0000092122 SOUTHERN CO SO 0001249303 GRAIN DAVID J 30 IVAN ALLEN JR. BLVD., NW ATLANTA GA 30308 1 0 0 0 Deferred Stock Units 0.00 2018-10-01 4 A 0 1563.2237 43.18 A Southern Company Common Stock 1563.2237 35313.2596 D Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date. Amendment filed to correct the total number of deferred stock units beneficially owned under the Deferred Compensation Plan on October 1, 2018. The price of the derivative security was based on the closing price as of September 28, 2018 rather than October 1, 2018. The correction results in an increase to the total number of deferred stock units beneficially owned. Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date. Includes dividends accrued on March 6, June 6, September 6 and December 6, 2018. Marcia R. DeMar, Attorney-in-Fact for David J. Grain 2019-01-02