Company: SOJE
Filing Date: 2025-03-31
Form Type: PRE 14A
Source: 0000092122-25-000032
Chunk: 87

Company: SOUTHERN CO
Filing Date: 2025-03-31
Form: PRE 14A
Chunk 87
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,023,690 |
| Change in Fair Value from Prior December 31 to Vesting Date for Awards that vested during Year                                           |     |     |     | $ |    516,493 |     |              |     | $ |   405,845 |
| Deduction of Fair Value of Awards Granted in Prior Years that were forfeited during Year                                                 |     |     |     |   |          — |     |              |     |   |         — |
| Increase based upon Incremental Fair Value of Awards modified during Year                                                                |     |     |     |   |          — |     |              |     |   |         — |
| Increase based on Dividends or Other Earnings Paid during Year prior to Vesting Date of Award                                            |     |     |     |   |          — |     |              |     |   |         — |
| Total                                                                                                                                    |     |     |     | $ | 22,427,771 |     |              |     | $ | 5,096,980 |

#### Southern Company2025 Proxy Statement77

#### Executive Compensation Tables
Stock Award Fair Value was calculated based on the probable outcome of performance conditions as of the relevant measurement date, consistent with the approach described on page 64 .

Pension Service Cost The addition of Pension Service Costs reflects the annual service costs for the Pension Plan and supplemental pension plans described on page 69 .

4 Womack: Pension Plan - $48,854; SBP-P and SERP - $707,523

4 Average Non-PEO NEOs: Pension Plan - $47,085; SBP-P and SERP - $325,509

There were no plan amendments during the covered year that resulted in prior service costs.

#### Column (f)
For each Covered Year, our absolute TSR was calculated based on the yearly percentage change in our cumulative TSR on our common stock, par value $5.00 per share, measured as the quotient of (a) the sum of (i) the cumulative amount of dividends for the period beginning with our closing stock price on the NYSE on December 31, 2019 through and including the last day of the covered year (each, a Measurement Period), assuming dividend reinvestment, plus (ii) the difference between our closing stock price at the end versus the beginning of the Measurement Period, divided by (b) our closing share price at the beginning of the Measurement Period. Each of these yearly percentage changes was then applied to a deemed fixed investment