Company: SOJE
Filing Date: 2025-11-04
Form Type: 424B2
Source: 0000092122-25-000092
Chunk: 64

Company: SOUTHERN CO
Filing Date: 2025-11-04
Form: 424B2
Chunk 64
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,000 and maturing on or prior to December 15, 2028, which is referred to as a “Treasury security.” This substitution would create 40 Treasury Units and the RSN of each series would be released from the pledge under the purchase contract and pledge agreement and delivered to the holder and would be tradable and transferable separately from the Treasury Units. Because both series of RSNs are issued in integral multiples of $1,000, holders of Corporate Units may make the substitution only in integral multiples of 40 Corporate Units. After a successful remarketing, holders may not create Treasury Units from Corporate Units or recreate Corporate Units from Treasury Units.

Each Treasury Unit will consist of:

• a purchase contract under which

o the holder will agree to purchase from the Company, and the Company will agree to sell to the holder, on the purchase contract settlement date, or earlier upon early settlement, for $50, a number of shares of the Company’s common stock equal to the applicable settlement rate, plus, in the case of an early settlement upon a fundamental change, the number of make-whole shares; and

o the Company will pay the holder quarterly contract adjustment payments at the rate of 2.975% per year on the stated amount of $50, or $1.4875 per year, subject to the Company’s right to defer the contract adjustment payments; and

• a 1/20 undivided beneficial ownership interest in a Treasury security.

<div align='center'>S-39</div>

The term “blackout period” means the period (1) if the Company elects to conduct an optional remarketing, from 4:00 p.m., New York City time, on the second business day (as defined below) immediately preceding the first day of the applicable optional remarking period until the settlement date of such optional remarketing or the date the Company announces that such remarketing was unsuccessful and (2) after 4:00 p.m., New York City time, on the second business day immediately preceding the first day of the final remarketing period.

The term “business day” means any day that is not a Saturday or Sunday or a day on which banking institutions in The City of New York or Hartford, Connecticut are authorized or required by law or executive order to close or a day on which the corporate trust office of the purchase contract agent is closed for business.

The Treasury Unit holder’s beneficial ownership interest in the Treasury security will be pledged to the Company through the collateral agent to secure