Company: SOJE
Filing Date: 2025-11-04
Form Type: 424B2
Source: 0000092122-25-000092
Chunk: 39

Company: SOUTHERN CO
Filing Date: 2025-11-04
Form: 424B2
Chunk 39
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 and will be payable quarterly)(3 |     | -Owed to Holder)                                                                                                                                                                                                                                                                                                           
 Interest4.15% per annum paid quarterly(following a successful remarketing as fixed-rate notes, interest will be payable at a reset rate and will be payable semi-annually or, following a successful remarketing as floating-rate notes, interest will be payable based on a reset spread and will be payable quarterly)(3 |

| (Owed to Southern Company)$50 at Purchase Contract SettlementDate(December 15, 2028) |     | -Owed to Holder)$25 at Maturity(December 15, 2030)(4 |     | -Owed to Holder)$25 at Maturity(December 15, 2033)(4 |

(1) Contract adjustment payments may be deferred as described under “Description of the Purchase Contracts—Contract Adjustment Payments” below. (2) Each owner of an undivided beneficial ownership interest in RSNs of each series will be entitled to 1/40 of each interest payment paid on each series in respect of a $1,000 principal amount RSN. (3) In connection with any successful remarketing of the RSNs, the optional redemption provisions will cease to apply to the Series 2025C RSNs. The Series 2025B RSNs shall not be subject to optional redemption at any time. (4) Each series of RSNs will be issued in minimum denominations of $1,000, except in limited circumstances following a termination event. Each undivided beneficial ownership interest in RSNs of a series represents a 1/40 undivided beneficial ownership interest in a RSN of that series having a principal amount of $1,000. The holder of a Corporate Unit owns the 1/40 undivided beneficial ownership interest in RSNs of each series having a principal amount of $1,000 that form a part of the Corporate Unit, but will pledge such interests to the Company through the collateral agent to secure the holder’s obligations under the related purchase contract. If the Treasury portfolio has replaced the RSNs as a result of a successful optional remarketing, the applicable ownership interests in the Treasury portfolio or cash, as applicable, will replace the RSNs as a component of the Corporate Unit.

<div align='center'>S-20</div>

Treasury Units A Treasury Unit consists of two components as described below: (1)

| Purchase Contract                                                                                                                                                |     | 1