SO

SEC source: 0001209191-22-000244 · doc4.xml · derivative · entry 1

GRAIN DAVID J · CIK 0001249303 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,533.6113

Underlying: Southern Company Common Stock · 1,093.6133 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-22-000239 · doc4.xml · derivative · entry 1

Clark Henry A III · CIK 0001474932 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,482.298

Underlying: Southern Company Common Stock · 984.252 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-22-000238 · doc4.xml · derivative · entry 1

BARANCO JUANITA P · CIK 0001198001 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 137,005.4211

Underlying: Southern Company Common Stock · 984.252 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-22-000237 · doc4.xml · derivative · entry 1

Akella Janaki · CIK 0001763595 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,214.3755

Underlying: Southern Company Common Stock · 583.2604 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-22-000232 · doc4.xml · derivative · entry 1

Svinicki Kristine L · CIK 0001889194 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,069.3107

Underlying: Southern Company Common Stock · 1,069.3107 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-22-002228 · doc4.xml · derivative · entry 5

Cummiskey Christopher · CIK 0001642170 · EVP & CCCS Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,534

Underlying: Southern Company Common Stock · 1,534 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · shares: The RSU award, granted on February 22, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F4 · derivative.exercise_date: The RSU award, granted on February 22, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F4 · derivative.expiration_date: The RSU award, granted on February 22, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-22-002228 · doc4.xml · nonDerivative · entry 2

Cummiskey Christopher · CIK 0001642170 · EVP & CCCS Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,457.4417

F2 · shares: Shares withheld to satisfy required state and federal tax withholding requirements.

SEC source: 0001209191-22-002228 · doc4.xml · nonDerivative · entry 1

Cummiskey Christopher · CIK 0001642170 · EVP & CCCS Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,280.4417

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The RSU award, granted on February 22, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Includes 278 accrued dividend equivalent units. Shares will be withheld upon vesting to satisfy tax requirements.

F1 · price: The RSU award, granted on February 22, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Includes 278 accrued dividend equivalent units. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-22-002227 · doc4.xml · derivative · entry 3

Kuczynski Stephen E · CIK 0001524757 · Pres. & CEO, Southern Nuclear

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,184

Underlying: Southern Company Common Stock · 8,184 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: The RSU award, granted on May 23, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirement

F3 · derivative.exercise_date: The RSU award, granted on May 23, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirement

F3 · derivative.expiration_date: The RSU award, granted on May 23, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirement

SEC source: 0001209191-22-002227 · doc4.xml · nonDerivative · entry 2

Kuczynski Stephen E · CIK 0001524757 · Pres. & CEO, Southern Nuclear

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,858.1563

F2 · shares: Shares withheld to satisfy required state and federal tax withholding requirements.

SEC source: 0001209191-22-002227 · doc4.xml · nonDerivative · entry 1

Kuczynski Stephen E · CIK 0001524757 · Pres. & CEO, Southern Nuclear

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,181.1563

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The RSU award, granted on May 23, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Includes 1,346 accrued dividend equivalent units. Shares will be withheld upon vesting to satisfy tax requirements.

F1 · price: The RSU award, granted on May 23, 2018, vests 20% each year for five years, on December 31 of each year, beginning December 31, 2018. Vesting will be accelerated if certain performance measures are met before December 31, 2022. Includes 1,346 accrued dividend equivalent units. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-22-000230 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,933.9393

Underlying: Southern Company Common Stock · 2.9947 shares

Expires not disclosed

F1 · security: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.exercise_date: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.expiration_date: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

SEC source: 0001209191-21-070573 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,930.9446

Underlying: Southern Company Common Stock · 3.0628 shares

Expires not disclosed

F1 · security: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.exercise_date: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.expiration_date: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

SEC source: 0001209191-21-070683 · doc4.xml · derivative · entry 3

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 246,835

Underlying: Southern Company Common Stock · 66,121 shares

Expires 2023-04-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: Options were exercised and shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-070683 · doc4.xml · nonDerivative · entry 2

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,769

F1 · security: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.50 to $67.66, inclusive. The reporting person undertakes to provide to Southern Company, any security holder of Southern Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

SEC source: 0001209191-21-070683 · doc4.xml · nonDerivative · entry 1

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,890

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-21-069249 · doc4.xml · nonDerivative · entry 1

Kuczynski Stephen E · CIK 0001524757 · Pres. & CEO, Southern Nuclear

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,651.1563

F1 · security: Shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-068116 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,927.8818

Underlying: Southern Company Common Stock · 3.2582 shares

Expires not disclosed

F1 · security: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.exercise_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.expiration_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

SEC source: 0001209191-21-067619 · doc4.xml · nonDerivative · entry 1

Cummiskey Christopher · CIK 0001642170 · EVP & CCCS Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,798.1972

F1 · security: Shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-066470 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,924.6235

Underlying: Southern Company Common Stock · 3.2666 shares

Expires not disclosed

F1 · security: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.exercise_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.expiration_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

SEC source: 0001209191-21-064230 · doc4.xml · nonDerivative · entry 1

Kuczynski Stephen E · CIK 0001524757 · Pres. & CEO, Southern Nuclear

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,151.1563

F1 · security: Shares were sold pursuant to a Rule 10b5-1 plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.01 to $63.10, inclusive. The reporting person undertakes to provide to Southern Company, any security holder of Southern Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

SEC source: 0001209191-21-064226 · doc4.xml · nonDerivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,099

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.6201 to $63.6250, inclusive. The reporting person undertakes to provide to Southern Company, any security holder of Southern Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

SEC source: 0001209191-21-063396 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,921.3569

Underlying: Southern Company Common Stock · 3.2443 shares

Expires not disclosed

F1 · security: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.exercise_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.expiration_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

SEC source: 0001209191-21-061503 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,877.6509

Underlying: Southern Company Common Stock · 3.252 shares

Expires not disclosed

F1 · security: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.exercise_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.expiration_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

SEC source: 0001209191-21-060240 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,874.3989

Underlying: Southern Company Common Stock · 3.2723 shares

Expires not disclosed

F1 · security: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.exercise_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.expiration_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

SEC source: 0001209191-21-060238 · doc4.xml · nonDerivative · entry 1

Kuczynski Stephen E · CIK 0001524757 · Pres. & CEO, Southern Nuclear

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,651.1563

F1 · security: Shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-059016 · doc4.xml · derivative · entry 1

Akella Janaki · CIK 0001763595 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,543.9054

Underlying: Southern Company Common Stock · 647.7733 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-059013 · doc4.xml · derivative · entry 1

BARANCO JUANITA P · CIK 0001198001 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 134,646.7972

Underlying: Southern Company Common Stock · 1,093.1174 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-059005 · doc4.xml · derivative · entry 1

Clark Henry A III · CIK 0001474932 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,987.8085

Underlying: Southern Company Common Stock · 1,093.1174 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058998 · doc4.xml · derivative · entry 1

EARLEY ANTHONY F JR · CIK 0001167316 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,130.0932

Underlying: Southern Company Common Stock · 1,042.5101 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058994 · doc4.xml · derivative · entry 1

GRAIN DAVID J · CIK 0001249303 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,869.7226

Underlying: Southern Company Common Stock · 1,214.5749 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058988 · doc4.xml · derivative · entry 1

Honorable Colette D · CIK 0001827550 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,207.0565

Underlying: Southern Company Common Stock · 870.4453 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058977 · doc4.xml · derivative · entry 1

JAMES DONALD M · CIK 0001188417 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,091.8345

Underlying: Southern Company Common Stock · 647.7733 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058975 · doc4.xml · derivative · entry 1

JOHNS JOHN D · CIK 0001189571 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,234.4483

Underlying: Southern Company Common Stock · 647.7733 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058971 · doc4.xml · derivative · entry 1

Klein Dale E. · CIK 0001493467 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,169.2406

Underlying: Southern Company Common Stock · 647.7733 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058968 · doc4.xml · derivative · entry 1

Moniz Ernest J · CIK 0001265177 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,697.914

Underlying: Southern Company Common Stock · 647.7733 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058966 · doc4.xml · derivative · entry 1

SMITH WILLIAM G JR · CIK 0000909019 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,179.2856

Underlying: Southern Company Common Stock · 1,174.0891 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-058959 · doc4.xml · derivative · entry 1

WOOD E JENNER III · CIK 0001015221 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,997.8329

Underlying: Southern Company Common Stock · 647.7733 shares

Expires not disclosed

F1 · security: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.exercise_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

F1 · derivative.expiration_date: Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

SEC source: 0001209191-21-057787 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,871.1266

Underlying: Southern Company Common Stock · 2.0053 shares

Expires not disclosed

F1 · security: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.exercise_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.expiration_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

SEC source: 0001209191-21-055691 · doc4.xml · derivative · entry 1

Tucker Daniel S · CIK 0001881495 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,869.1213

Underlying: Southern Company Common Stock · 1.9129 shares

Expires not disclosed

F1 · security: Each share of phantom stock represents the right to receive one share of Southern Company common stock or the cash value thereof. Includes phantom stock units acquired as if reinvested in the dividend reinvestment plan. There is no exercise or expiration date.

F2 · derivative.exercise_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

F2 · derivative.expiration_date: Shares of phantom stock are payable in cash following termination of Mr. Tucker's employment with The Southern Company. Mr. Tucker may transfer his phantom stock account into an alternative investment account at any time.

SEC source: 0001209191-21-055684 · doc4.xml · nonDerivative · entry 1

Kuczynski Stephen E · CIK 0001524757 · Pres. & CEO, Southern Nuclear

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,151.1563

F1 · security: Shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-055466 · doc4.xml · derivative · entry 6

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,182

Underlying: Southern Company Common Stock · 17,727 shares

Expires 2024-02-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: Options were exercised and shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-055466 · doc4.xml · derivative · entry 5

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 312,956

Underlying: Southern Company Common Stock · 16,157 shares

Expires 2023-04-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: Options were exercised and shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-055466 · doc4.xml · nonDerivative · entry 4

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,769

F1 · security: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.50 to $67.54, inclusive. The reporting person undertakes to provide to Southern Company, any security holder of Southern Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

SEC source: 0001209191-21-055466 · doc4.xml · nonDerivative · entry 3

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,926

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-21-055466 · doc4.xml · nonDerivative · entry 2

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,769

SEC source: 0001209191-21-055466 · doc4.xml · nonDerivative · entry 1

Greene Kimberly S, · CIK 0001573512 · Chairman, President & CEO, GAS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 103,496

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-21-055149 · doc4.xml · derivative · entry 5

WOMACK CHRISTOPHER C · CIK 0001195423 · President, GPC

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 46,056 shares

Expires 2022-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · security: Options were exercised and shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-055149 · doc4.xml · nonDerivative · entry 3

WOMACK CHRISTOPHER C · CIK 0001195423 · President, GPC

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,660.3696

F2 · security: Shares were sold pursuant to a Rule 10b5-1 plan.

SEC source: 0001209191-21-055149 · doc4.xml · nonDerivative · entry 2

WOMACK CHRISTOPHER C · CIK 0001195423 · President, GPC

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,591.3696

F1 · security: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.77 to $66.99, inclusive. The reporting person undertakes to provide to Southern Company, any security holder of Southern Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (1) to this Form 4.