SO

SEC source: 0001209191-24-002920 · doc4.xml · nonDerivative · entry 2

Poroch David P. · CIK 0001616250 · Comptroller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,527

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

SEC source: 0001209191-24-002920 · doc4.xml · nonDerivative · entry 1

Poroch David P. · CIK 0001616250 · Comptroller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,683

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: Shares acquired upon vesting of final 1/3 of restricted stock units granted on February 3, 2021. Includes 58 accrued dividend equivalent units.

SEC source: 0001209191-24-002914 · doc4.xml · derivative · entry 4

Peoples James Jeffrey · CIK 0001815666 · Chairman, President & CEO, APC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 823 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: Represents final 1/3 of restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents final 1/3 of restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents final 1/3 of restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002914 · doc4.xml · nonDerivative · entry 2

Peoples James Jeffrey · CIK 0001815666 · Chairman, President & CEO, APC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,808

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

SEC source: 0001209191-24-002914 · doc4.xml · nonDerivative · entry 1

Peoples James Jeffrey · CIK 0001815666 · Chairman, President & CEO, APC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,269

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: Shares acquired upon vesting of final 1/3 of restricted stock units granted on February 3, 2021. Includes 104 accrued dividend equivalent units.

SEC source: 0001209191-24-002912 · doc4.xml · derivative · entry 3

Kuczynski Stephen E · CIK 0001524757 · CEO, Southern Nuclear

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 1,587 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: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002912 · doc4.xml · nonDerivative · entry 2

Kuczynski Stephen E · CIK 0001524757 · CEO, Southern Nuclear

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,426.1563

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

SEC source: 0001209191-24-002912 · doc4.xml · nonDerivative · entry 1

Kuczynski Stephen E · CIK 0001524757 · CEO, Southern Nuclear

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,262.1563

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 3, 2021. Includes 446 accrued dividend equivalent units.

SEC source: 0001209191-24-002911 · doc4.xml · derivative · entry 4

Kerr, II James Y · CIK 0001601624 · Chairman, President & CEO, GAS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 2,955 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: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002911 · doc4.xml · nonDerivative · entry 2

Kerr, II James Y · CIK 0001601624 · Chairman, President & CEO, GAS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 164,010

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

SEC source: 0001209191-24-002911 · doc4.xml · nonDerivative · entry 1

Kerr, II James Y · CIK 0001601624 · Chairman, President & CEO, GAS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 165,419

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 3, 2021. Includes 373 accrued dividend equivalent units.

SEC source: 0001209191-24-002910 · doc4.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 3,215 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.

F2 · shares: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F2 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F2 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002910 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,571

F1 · shares: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 3, 2021. Includes 404 accrued dividend equivalent units.

SEC source: 0001209191-24-002910 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,278

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 3, 2021. Includes 404 accrued dividend equivalent units.

SEC source: 0001209191-24-002909 · doc4.xml · derivative · entry 4

Drake Sloane N · CIK 0001971188 · EVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 684 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: Represents final 1/3 of restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents final 1/3 of restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents final 1/3 of restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002909 · doc4.xml · nonDerivative · entry 2

Drake Sloane N · CIK 0001971188 · EVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,196

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

SEC source: 0001209191-24-002909 · doc4.xml · nonDerivative · entry 1

Drake Sloane N · CIK 0001971188 · EVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,585

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: Shares acquired upon vesting of final 1/3 of restricted stock units granted on February 3, 2021. Includes 86 accrued dividend equivalent units.

SEC source: 0001209191-24-002908 · doc4.xml · derivative · entry 4

Cummiskey Christopher · CIK 0001642170 · EVP & CCCS Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 1,592 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: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002908 · doc4.xml · nonDerivative · entry 2

Cummiskey Christopher · CIK 0001642170 · EVP & CCCS Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,401.4417

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

SEC source: 0001209191-24-002908 · doc4.xml · nonDerivative · entry 1

Cummiskey Christopher · CIK 0001642170 · EVP & CCCS Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,306.4417

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 3, 2021. Includes 202 accrued dividend equivalent units.

SEC source: 0001209191-24-002907 · doc4.xml · derivative · entry 3

DAVIS MARTIN BERNARD · CIK 0001674959 · EVP and CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 1,713 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: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002907 · doc4.xml · nonDerivative · entry 2

DAVIS MARTIN BERNARD · CIK 0001674959 · EVP and CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,726

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

SEC source: 0001209191-24-002907 · doc4.xml · nonDerivative · entry 1

DAVIS MARTIN BERNARD · CIK 0001674959 · EVP and CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,685

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 3, 2021. Includes 216 accrued dividend equivalent units.

SEC source: 0001209191-24-002905 · doc4.xml · derivative · entry 4

Connally Stan W · CIK 0001498337 · Executive Vice President, SCS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 2,788 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: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002905 · doc4.xml · nonDerivative · entry 2

Connally Stan W · CIK 0001498337 · Executive Vice President, SCS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,666

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

SEC source: 0001209191-24-002905 · doc4.xml · nonDerivative · entry 1

Connally Stan W · CIK 0001498337 · Executive Vice President, SCS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,139

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 3, 2021. Includes 351 accrued dividend equivalent units.

SEC source: 0001209191-24-002904 · doc4.xml · derivative · entry 3

Anderson Bryan D · CIK 0001831824 · EVP & Pres. External Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 1,591 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: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 3, 2021. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002904 · doc4.xml · nonDerivative · entry 2

Anderson Bryan D · CIK 0001831824 · EVP & Pres. External Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,956

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

SEC source: 0001209191-24-002904 · doc4.xml · nonDerivative · entry 1

Anderson Bryan D · CIK 0001831824 · EVP & Pres. External Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,911

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 3, 2021. Includes 201 accrued dividend equivalent units.

SEC source: 0001209191-24-002667 · doc4.xml · derivative · entry 4

Poroch David P. · CIK 0001616250 · Comptroller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,310

Underlying: Southern Company Common Stock · 656 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 · security: Represents first 1/3 of restricted stock units granted on February 1, 2023. The remaining award will vest 1/3 in 2025 and 1/3 in 2026. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.exercise_date: Represents first 1/3 of restricted stock units granted on February 1, 2023. The remaining award will vest 1/3 in 2025 and 1/3 in 2026. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

F3 · derivative.expiration_date: Represents first 1/3 of restricted stock units granted on February 1, 2023. The remaining award will vest 1/3 in 2025 and 1/3 in 2026. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.

SEC source: 0001209191-24-002667 · doc4.xml · nonDerivative · entry 2

Poroch David P. · CIK 0001616250 · Comptroller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,168

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

SEC source: 0001209191-24-002667 · doc4.xml · nonDerivative · entry 1

Poroch David P. · CIK 0001616250 · Comptroller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,375

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: Shares acquired upon vesting of first 1/3 of restricted stock units granted on February 1, 2023. Includes 28 accrued dividend equivalent units.

SEC source: 0001209191-24-001852 · doc4.xml · derivative · entry 4

Poroch David P. · CIK 0001616250 · Comptroller

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 10,099 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.

SEC source: 0001209191-24-001852 · doc4.xml · nonDerivative · entry 2

Poroch David P. · CIK 0001616250 · Comptroller

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,691

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.73 to $70.17, 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: 0001209191-24-001852 · doc4.xml · nonDerivative · entry 1

Poroch David P. · CIK 0001616250 · Comptroller

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,790

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: 0001209191-24-001352 · doc4.xml · nonDerivative · entry 1

Kuczynski Stephen E · CIK 0001524757 · CEO, Southern Nuclear

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,284.1563

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

SEC source: 0001209191-24-000121 · doc4.xml · derivative · entry 1

WOOD E JENNER III · CIK 0001015221 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,978.683

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000115 · doc4.xml · derivative · entry 1

Thomas Lizanne · CIK 0001305419 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,392.1087

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000112 · doc4.xml · derivative · entry 1

Svinicki Kristine L · CIK 0001889194 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,919.1765

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000109 · doc4.xml · derivative · entry 1

SMITH WILLIAM G JR · CIK 0000909019 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,005.8499

Underlying: Southern Company Common Stock · 1,123.0747 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: 0001209191-24-000108 · doc4.xml · derivative · entry 1

Moniz Ernest J · CIK 0001265177 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,308.3151

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000105 · doc4.xml · derivative · entry 1

MEADOR DAVID E · CIK 0001167313 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,392.1087

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000103 · doc4.xml · derivative · entry 1

Klein Dale E. · CIK 0001493467 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,826.5638

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000100 · doc4.xml · derivative · entry 1

JOHNS JOHN D · CIK 0001189571 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,613.1516

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000099 · doc4.xml · derivative · entry 1

JAMES DONALD M · CIK 0001188417 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 184,011.3025

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000097 · doc4.xml · derivative · entry 1

GRAIN DAVID J · CIK 0001249303 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,131.2205

Underlying: Southern Company Common Stock · 1,158.7279 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: 0001209191-24-000092 · doc4.xml · derivative · entry 1

EARLEY ANTHONY F JR · CIK 0001167316 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,221.0464

Underlying: Southern Company Common Stock · 980.4621 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: 0001209191-24-000090 · doc4.xml · derivative · entry 1

Cooper Shantella E. · CIK 0001698291 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,827.3599

Underlying: Southern Company Common Stock · 1,839.6258 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: 0001209191-24-000085 · doc4.xml · derivative · entry 1

Akella Janaki · CIK 0001763595 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,721.6451

Underlying: Southern Company Common Stock · 606.1038 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: 0001209191-24-000080 · doc4.xml · derivative · entry 1

Clark Henry A III · CIK 0001474932 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,687.1846

Underlying: Southern Company Common Stock · 1,033.9418 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.