Company: SOJE
Filing Date: 2025-11-03
Form Type: 424B5
Source: 0000092122-25-000088
Chunk: 15

Company: SOUTHERN CO
Filing Date: 2025-11-03
Form: 424B5
Chunk 15
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 aggregate interest payment (assuming no reset of the interest rate) that would have been paid to the holders of the Corporate Units on the purchase contract settlement date on the principal amount of the Series 2025C RSNs underlying the undivided beneficial ownership interests in the Series 2025C RSNs included in the Corporate Units on the optional remarketing date.

If, on the optional remarketing date, United States Treasury securities (or principal or interest strips thereof) that are to be included in the Treasury portfolio have a yield that is less than zero, then an amount in cash equal to the aggregate principal amount at maturity of the United States Treasury securities described in the bullet points above will be substituted for the RSNs that are components of the Corporate Units and will be pledged to the Company through the collateral agent to secure the Corporate Unit holders’ obligation to purchase the Company’s common stock under the purchase contracts. In addition, in such case, references to “Treasury security” and “United States Treasury securities (or principal or interest strips thereof)” in connection with the Treasury portfolio will, thereafter, be deemed to be references to such amount of cash.

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#### What is a Treasury Unit?
A Treasury Unit is a unit created from a Corporate Unit by substituting the pledged undivided beneficial ownership interest in each series of RSNs that secure a holder’s obligation under the purchase contract with a sufficient amount of Treasury securities. A Treasury Unit consists of a purchase contract and a 1/20 undivided beneficial ownership interest in a zero-coupon United States Treasury security with a principal amount at maturity of $1,000 that matures on or prior to December 15, 2028 (for example, CUSIP No. 912821GX7), which is referred to as a “Treasury security.” The ownership interest in the Treasury security that is a component of a Treasury Unit will be owned by you, but will be pledged to the Company through the collateral agent to secure your obligation under the related purchase contract.

How can I create Treasury Units from Corporate Units?

Each holder of Corporate Units will have the right, at any time prior to a successful remarketing and other than during a blackout period, to substitute Treasury securities which must be purchased in the open market at the expense of the Corporate Unit holder (unless otherwise owned by the holder) for the related undivided beneficial ownership interest in RSNs held by the collateral agent. The Treasury securities must have an aggregate principal amount