Company: SOJE
Filing Date: 2025-11-04
Form Type: 424B2
Source: 0000092122-25-000092
Chunk: 61

Company: SOUTHERN CO
Filing Date: 2025-11-04
Form: 424B2
Chunk 61
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ledge Agreement” and “Description of the Remarketable Senior Notes” in this Prospectus Supplement, contain a description of the material terms of the Equity Units, but are only summaries and are not complete. This summary is subject to and is qualified by reference to all the provisions of the purchase contract and pledge agreement, the Senior Note Indenture, the RSNs and the form of remarketing agreement, which has been attached as an exhibit to the purchase contract and pledge agreement, including the definitions of certain terms used therein, forms of which have been or will be filed and incorporated by reference as exhibits to the registration statement of which this Prospectus Supplement and the accompanying Prospectus form a part.

#### General
The Company will issue the Equity Units under the purchase contract and pledge agreement among the Company and U.S. Bank Trust Company, National Association, as purchase contract agent (the “purchase contract agent”), collateral agent (the “collateral agent”), custodial agent (the “custodial agent”) and securities intermediary (the “securities intermediary”). The Equity Units may be either Corporate Units or Treasury Units. The Equity Units will initially consist of 35,000,000 Corporate Units (or 40,000,000 Corporate Units if the underwriters exercise their over-allotment option in full), each with a stated amount of $50.

Each Corporate Unit offered 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 December 15, 2028 (or if such day is not a business day, the following business day), which is referred to as 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 described under “Description of the Purchase Contracts—Purchase of Common Stock,” “Description of the Purchase Contracts—Early Settlement” or “Description of the Purchase Contracts—Early Settlement Upon a Fundamental Change,” as the case may be, 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 such contract adjustment payments as described under “Description of the Purchase Contracts—Contract Adjustment Payments,” and

either:

• (i) a