SO

SEC source: 0001193125-26-036074 · ownership.xml · nonDerivative · entry 4

Cherry Pedro P. · CIK 0001697382 · Chairman, President & CEO, MPC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 824

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

SEC source: 0001193125-26-036074 · ownership.xml · nonDerivative · entry 3

Cherry Pedro P. · CIK 0001697382 · Chairman, President & CEO, MPC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,190

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 79 accrued dividend equivalent units.

SEC source: 0001193125-26-036073 · ownership.xml · derivative · entry 5

Sena Peter P III · CIK 0002023851 · Chairman,President & CEO, SNC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 1,573 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: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036073 · ownership.xml · nonDerivative · entry 4

Sena Peter P III · CIK 0002023851 · Chairman,President & CEO, SNC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,889

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

SEC source: 0001193125-26-036073 · ownership.xml · nonDerivative · entry 3

Sena Peter P III · CIK 0002023851 · Chairman,President & CEO, SNC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,669

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 183 accrued dividend equivalent units.

SEC source: 0001193125-26-036071 · ownership.xml · derivative · entry 8

Poroch David P. · CIK 0001616250 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 655 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.

F6 · shares: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F6 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F6 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036071 · ownership.xml · nonDerivative · entry 6

Poroch David P. · CIK 0001616250 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,904

F4 · shares: Shares withheld to satisfy required state and federal tax withholding requirements.

SEC source: 0001193125-26-036071 · ownership.xml · nonDerivative · entry 5

Poroch David P. · CIK 0001616250 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,160

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.

F5 · shares: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 76 accrued dividend equivalent units.

SEC source: 0001193125-26-036070 · ownership.xml · derivative · entry 6

Spainhour Sterling A Jr. · CIK 0001849295 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 2,124 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: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036070 · ownership.xml · nonDerivative · entry 4

Spainhour Sterling A Jr. · CIK 0001849295 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,159

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

SEC source: 0001193125-26-036070 · ownership.xml · nonDerivative · entry 3

Spainhour Sterling A Jr. · CIK 0001849295 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,217

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 247 accrued dividend equivalent units.

SEC source: 0001193125-26-036069 · ownership.xml · derivative · entry 6

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 · 2,895 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: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036069 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,405

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

SEC source: 0001193125-26-036069 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,898

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 336 accrued dividend equivalent units.

SEC source: 0001193125-26-036068 · ownership.xml · derivative · entry 6

Anderson Bryan D · CIK 0001831824 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 1,825 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.

F5 · shares: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F5 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F5 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036068 · ownership.xml · nonDerivative · entry 4

Anderson Bryan D · CIK 0001831824 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,478

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

SEC source: 0001193125-26-036068 · ownership.xml · nonDerivative · entry 3

Anderson Bryan D · CIK 0001831824 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,563

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 212 accrued dividend equivalent units.

SEC source: 0001193125-26-036039 · ownership.xml · derivative · entry 6

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 · 3,086 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.

F5 · shares: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F5 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F5 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036039 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,695

F4 · shares: Shares withheld to satisfy required state and federal tax withholding requirements.

SEC source: 0001193125-26-036039 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,285

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 358 accrued dividend equivalent units.

SEC source: 0001193125-26-036037 · ownership.xml · derivative · entry 5

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 · 3,594 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: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036037 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,145

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

SEC source: 0001193125-26-036037 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,986

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 417 accrued dividend equivalent units.

SEC source: 0001193125-26-036032 · ownership.xml · derivative · entry 6

WOMACK CHRISTOPHER C · CIK 0001195423 · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 4,313 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: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F4 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036032 · ownership.xml · nonDerivative · entry 4

WOMACK CHRISTOPHER C · CIK 0001195423 · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,642.8806

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

SEC source: 0001193125-26-036032 · ownership.xml · nonDerivative · entry 3

WOMACK CHRISTOPHER C · CIK 0001195423 · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,808.8806

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 499 accrued dividend equivalent units.

SEC source: 0001193125-26-036030 · ownership.xml · derivative · entry 7

Kim Matthew M. · CIK 0002082705 · Comptroller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Southern Company Common Stock · 308 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.

F5 · shares: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F5 · derivative.exercise_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

F5 · derivative.expiration_date: Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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: 0001193125-26-036030 · ownership.xml · nonDerivative · entry 4

Kim Matthew M. · CIK 0002082705 · Comptroller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,429

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

SEC source: 0001193125-26-036030 · ownership.xml · nonDerivative · entry 3

Kim Matthew M. · CIK 0002082705 · Comptroller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,602

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: Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 37 accrued dividend equivalent units.

SEC source: 0001193125-26-036101 · ownership.xml · derivative · entry 7

Connally Stan W · CIK 0001498337 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,458

Underlying: Southern Company Common Stock · 2,458 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.

F5 · shares: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.exercise_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.expiration_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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: 0001193125-26-036101 · ownership.xml · nonDerivative · entry 2

Connally Stan W · CIK 0001498337 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,533

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

SEC source: 0001193125-26-036101 · ownership.xml · nonDerivative · entry 1

Connally Stan W · CIK 0001498337 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 149,640

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 second 1/3 of performance restricted stock units granted on January 31, 2024. Includes 176 accrued dividend equivalent units.

SEC source: 0001193125-26-036097 · ownership.xml · derivative · entry 7

Cummiskey Christopher · CIK 0001642170 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,674

Underlying: Southern Company Common Stock · 167 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.

F5 · shares: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.exercise_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.expiration_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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: 0001193125-26-036097 · ownership.xml · nonDerivative · entry 2

Cummiskey Christopher · CIK 0001642170 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,538.4417

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

SEC source: 0001193125-26-036097 · ownership.xml · nonDerivative · entry 1

Cummiskey Christopher · CIK 0001642170 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,296.4417

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 second 1/3 of performance restricted stock units granted on January 31, 2024. Includes 120 accrued dividend equivalent units.

SEC source: 0001193125-26-036074 · ownership.xml · derivative · entry 6

Cherry Pedro P. · CIK 0001697382 · Chairman, President & CEO, MPC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 696

Underlying: Southern Company Common Stock · 695 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: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F4 · derivative.exercise_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F4 · derivative.expiration_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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: 0001193125-26-036074 · ownership.xml · nonDerivative · entry 2

Cherry Pedro P. · CIK 0001697382 · Chairman, President & CEO, MPC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 439

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

SEC source: 0001193125-26-036074 · ownership.xml · nonDerivative · entry 1

Cherry Pedro P. · CIK 0001697382 · Chairman, President & CEO, MPC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 745

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 second 1/3 of restricted stock units granted on January 31, 2024. Includes 50 accrued dividend equivalent units.

SEC source: 0001193125-26-036073 · ownership.xml · derivative · entry 6

Sena Peter P III · CIK 0002023851 · Chairman,President & CEO, SNC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,636

Underlying: Southern Company Common Stock · 1,636 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.

F5 · shares: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.exercise_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.expiration_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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: 0001193125-26-036073 · ownership.xml · nonDerivative · entry 2

Sena Peter P III · CIK 0002023851 · Chairman,President & CEO, SNC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,913

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

SEC source: 0001193125-26-036073 · ownership.xml · nonDerivative · entry 1

Sena Peter P III · CIK 0002023851 · Chairman,President & CEO, SNC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,753

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 second 1/3 of restricted stock units granted on January 31, 2024. Includes 118 accrued dividend equivalent units.

SEC source: 0001193125-26-036071 · ownership.xml · derivative · entry 9

Poroch David P. · CIK 0001616250 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 676

Underlying: Southern Company Common Stock · 676 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.

F7 · shares: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F7 · derivative.exercise_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F7 · derivative.expiration_date: Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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: 0001193125-26-036071 · ownership.xml · nonDerivative · entry 4

Poroch David P. · CIK 0001616250 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,429

F4 · shares: Shares withheld to satisfy required state and federal tax withholding requirements.

SEC source: 0001193125-26-036071 · ownership.xml · nonDerivative · entry 3

Poroch David P. · CIK 0001616250 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,627

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: Shares acquired upon vesting of second 1/3 of restricted stock units granted on January 31, 2024. Includes 49 accrued dividend equivalent units.

SEC source: 0001193125-26-036070 · ownership.xml · derivative · entry 7

Spainhour Sterling A Jr. · CIK 0001849295 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,571

Underlying: Southern Company Common Stock · 2,571 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.

F5 · shares: Represents second 1/3 of performance restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.exercise_date: Represents second 1/3 of performance restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.expiration_date: Represents second 1/3 of performance restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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: 0001193125-26-036070 · ownership.xml · nonDerivative · entry 2

Spainhour Sterling A Jr. · CIK 0001849295 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,846

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

SEC source: 0001193125-26-036070 · ownership.xml · nonDerivative · entry 1

Spainhour Sterling A Jr. · CIK 0001849295 · EVP & CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,137

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 second 1/3 of performance restricted stock units granted on January 31, 2024. Includes 184 accrued dividend equivalent units.

SEC source: 0001193125-26-036069 · ownership.xml · derivative · entry 7

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,155

Underlying: Southern Company Common Stock · 3,154 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.

F5 · shares: Represents second 1/3 of performance restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.exercise_date: Represents second 1/3 of performance restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

F5 · derivative.expiration_date: Represents second 1/3 of performance restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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: 0001193125-26-036069 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,667

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

SEC source: 0001193125-26-036069 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,087

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 second 1/3 of performance restricted stock units granted on January 31, 2024. Includes 226 accrued dividend equivalent units.