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Insider Trading Arrangements
 3 Months Ended 9 Months Ended
Sep. 30, 2024
shares
Sep. 30, 2024
shares
Trading Arrangements, by Individual    
Material Terms of Trading Arrangement  
The following table reports information regarding the adoption of "Rule 10b5-1 trading arrangements" or "non-Rule 10b5-1 trading arrangements," as defined in Item 408(a) of Regulation S-K, during the three months ended September 30, 2024 for Southern Company's directors and "officers," as defined in Rule 16a-1(f) under the Securities Exchange Act of 1934, as amended. There were no modifications or terminations of such trading arrangements during the three months ended September 30, 2024. Unless otherwise indicated, each trading arrangement listed below is a "Rule 10b5-1 trading arrangement," provides for the sale of shares of Southern Company's common stock, commences no earlier than the expiration of the cooling-off period required by Rule 10b5-1(c)(1)(ii)(B)(1) under the Securities Exchange Act of 1934, as amended, and terminates upon the earlier of the "Expiration Date" listed below or the completion of all sales. The Subsidiary Registrants had no reportable trading arrangements for the three months ended September 30, 2024.
Name
Title
Date of Adoption
Expiration Date
Aggregate Number of Shares Covered
Martin B. Davis
Executive Vice President
August 6, 2024December 31, 2025
8,000(1)
J. Jeffrey Peoples
Chairman, President, and Chief Executive Officer of Alabama Power
September 5, 2024December 31, 2025
15,625(2)
Christopher C. Womack
Chairman, President, and Chief Executive Officer
September 5, 2024December 31, 202540,000
(1)The maximum number of shares that may be sold for Mr. Davis is the lesser of 8,000 and the number of shares that generates $400,000 in net proceeds.
(2)The maximum number of shares that may be sold for Mr. Peoples is the lesser of 15,625 and the number of shares that generates $1,250,000 in net proceeds.
Non-Rule 10b5-1 Arrangement Adopted false  
Rule 10b5-1 Arrangement Terminated false  
Non-Rule 10b5-1 Arrangement Terminated false  
Martin B. Davis [Member]    
Trading Arrangements, by Individual    
Name Martin B. Davis  
Title Executive Vice President  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date August 6, 2024  
Expiration Date December 31, 2025  
Arrangement Duration 512 days  
Aggregate Available 8,000 8,000
J. Jeffrey Peoples [Member]    
Trading Arrangements, by Individual    
Name J. Jeffrey Peoples  
Title Chairman, President, and Chief Executive Officer of Alabama Power  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date September 5, 2024  
Expiration Date December 31, 2025  
Arrangement Duration 482 days  
Aggregate Available 15,625 15,625
Christopher C. Womack [Member]    
Trading Arrangements, by Individual    
Name Christopher C. Womack  
Title Chairman, President, and Chief Executive Officer  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date September 5, 2024  
Expiration Date December 31, 2025  
Arrangement Duration 482 days  
Aggregate Available 40,000 40,000