Company: SOJE
Filing Date: 2025-11-03
Form Type: 424B5
Source: 0000092122-25-000088
Chunk: 26

Company: SOUTHERN CO
Filing Date: 2025-11-03
Form: 424B5
Chunk 26
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 through the automatic application of the portion of the proceeds of a successful remarketing during the final remarketing period equal to the total principal amount of both series of RSNs underlying the Corporate Units, as described under “What is a final remarketing?” above; or

• in the case of a successful optional remarketing, through the automatic application of the portion of the proceeds from the Treasury portfolio or cash equal to the total principal amount of both series of RSNs if the Treasury portfolio or cash has replaced the RSNs as a component of the Corporate Units as a result of a successful optional remarketing, as described under “What is an optional remarketing?” above; or

• through cash settlement as described under “Do I have to participate in the remarketing?” above or through exercise of the put right or cash settlement as described under “What happens if the RSNs are not successfully remarketed?” above; or

• on the purchase contract settlement date if you own Treasury Units through the automatic application of the proceeds of the interest in Treasury securities underlying the Treasury Units.

In addition, the purchase contract and pledge agreement that governs the Equity Units provides that your obligation under the purchase contract will be terminated without any further action or notice upon the occurrence of a termination event, as defined under “Description of the Purchase Contracts—Termination.”

If you settle a purchase contract early (other than pursuant to your fundamental change early settlement right), you will be entitled to receive any accrued and unpaid contract adjustment payments (including any accrued and unpaid deferred contract adjustment payments and compounded contract adjustment payments thereon) to, but excluding, the contract adjustment payment date immediately preceding the early settlement date; provided that, under certain circumstances, you will be required to pay all contract adjustment payments payable on the contract adjustment payment date next succeeding the early settlement date to the Company in order to exercise the early settlement right. See “Description of the Purchase Contracts—Early Settlement.” If you settle a purchase contract early pursuant to your fundamental change early settlement right, you will be entitled to receive any accrued and unpaid contract adjustment payments (including any accrued and unpaid deferred contract adjustment payments and compounded contract adjustment payments thereon) to, but excluding, the fundamental change early settlement date, unless the date on which the fundamental change early settlement right is exercised occurs

<div align='center'>S-13</div>

following any record date and prior to the related scheduled contract adjustment payment date, and the Company is not deferring the related contract adjustment payment, in which case the Company will instead pay