Company: SOJE
Filing Date: 2025-11-03
Form Type: 424B5
Source: 0000092122-25-000088
Chunk: 22

Company: SOUTHERN CO
Filing Date: 2025-11-03
Form: 424B5
Chunk 22
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If the Company elects to conduct an optional remarketing and that remarketing is successful:

• settlement with respect to the remarketed RSNs will occur on the second business day following the optional remarketing date, unless the remarketed RSNs are priced after 4:30 p.m., New York City time, on the optional remarketing date, in which case settlement will occur on the third business day following the optional remarketing date (such settlement date is referred to as the “optional remarketing settlement date”);

• in the case of any series of RSNs remarketed as fixed-rate notes, the interest rate on such series of RSNs will be reset and, in the case of any series of RSNs remarketed as floating-rate notes, the interest rate spread for such series of RSNs will be determined, by the remarketing agent in consultation with the Company on the optional remarketing date and will become effective on the optional remarketing settlement date, if applicable;

• the other modifications to the terms of the RSNs, as described under “What is a remarketing?” above, will become effective;

• after the optional remarketing settlement date, the Corporate Units will consist of a purchase contract and the applicable ownership interest in the Treasury portfolio or cash, as described above; and

• holders may no longer create Treasury Units or recreate Corporate Units from Treasury Units.

If the Company does not elect to conduct an optional remarketing, or no optional remarketing succeeds for any reason, the RSNs will continue to be a component of the Corporate Units or will continue to be held separately and the remarketing agent will use its commercially reasonable efforts to remarket the RSNs during the final remarketing period, as described under “What is a final remarketing?” below.

At any time and from time to time during any optional remarketing period prior to the announcement of a successful optional remarketing, the Company has the right to postpone any remarketing in the Company’s sole and absolute discretion.

<div align='center'>S-11</div>

#### What is a final remarketing?
Unless a termination event or a successful optional remarketing has previously occurred, the Company will remarket the RSNs during the ten business day period ending on, and including, December 12, 2028 (the third business day immediately preceding the purchase contract settlement date). Such period is referred to as the “final remarketing period,” the remarketing during this period as the “final remarketing” and the date