Company: SOJE
Filing Date: 2025-11-03
Form Type: 424B5
Source: 0000092122-25-000088
Chunk: 197

Company: SOUTHERN CO
Filing Date: 2025-11-03
Form: 424B5
Chunk 197
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 firm given upon their authority as experts in accounting and auditing.

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

#### 35,000,000 2025 Series A Equity Units
<div align='center'>(Initially Consisting of 35,000,000 2025 Series A Corporate Units)</div>

### PROSPECTUS SUPPLEMENT
<div align='center'>November , 2025</div>

<div align='center'>Joint Book-Running Managers</div>

| BofA Securities |     | J.P. Morgan |     | Mizuho |