Company: SOJE
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0000092122-25-000036
Chunk: 128

Company: SOUTHERN CO
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 128
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 Treated as invested at a rate of return equivalent to that of an actual investment in common stock, including crediting dividend equivalents as paid by Southern Company                                                                       |     |           | 21.69 | % |
| Prime Equivalent Account       |     | Treated as invested in prime interest rate compounding monthly, as published inThe Wall Street Journalas the base rate on corporate loans posted as of the last business day of each month by at least 75% of the United States’ largest banks |     |           |  8.62 | % |
| Equivalent Index Fund Accounts |     | Treated as invested in one of the following:                                                                                                                                                                                                   |     |           |       |   |
|                                |     | 4Equivalent Vanguard Institutional 500 Index Fund                                                                                                                                                                                              |     |           | 25.00 | % |
|                                |     | 4Equivalent BlackRock Russell 2000 Index Fund                                                                                                                                                                                                  |     |           | 11.56 | % |
|                                |     | 4Equivalent BlackRock EAFE Equity Index Fund                                                                                                                                                                                                   |     |           |  3.78 | % |

As of January 1, 2018, all of the NEOs were eligible to participate in the DCP. There is no enhancement or acceleration of payments under the DCP associated with termination or change-in-control events, other amounts deferred prior to 2005 which can be paid as a lump sum per the Benefit Administration Committee’s discretion. The lump sums that would be payable are those that are reported in the Nonqualified Deferred Compensation table.

#### 104Southern Company2025 Proxy Statement
| Our Mission                                                                                                                                                                                                                                                                                                                            
 Building the future of energy                                                                                                                                                                                                                                                                                                          
 For more than a century, we've been providing clean, safe, reliable and affordable energy to the customers and communities we're privileged to serve. Through industry-leading innovation and a commitment to a net-zero future, we're delivering sustainable and resilient energy solutions that help to drive growth and prosperity. |

Our Footprint

#### Award-Winning Excellence
More than 28,000 employees across the Southern Company system work hard every day to deliver on our mission. The Superior Performance of these employees has been recognized by a variety of organizations, earning the Company awards and recognitions that reflect Our Values and dedication to service.

| 42025 World’s Most Admired Companies byFortunemagazine (No. 1 in electric and gas utility industry for social responsibility, financial soundness and long-term investment value)                               
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