SOUTHERN CO
For the period ended May 13, 2026. Filed Apr 3, 2026.
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What shareholders are asked to vote on at a company's meeting. It is where to find what directors and top executives are paid, and who owns the most shares.
May 13, 2026 · Filed Apr 3, 2026
SO$92.34-1.1%Stored close · as of Nov 6, 2026
Contents
Appendix A - Definitions of Key Terms
| Term | Definition |
|---|---|
| 2025 IRP | Company-wide IRP developed to support state PSC regulatory filings for 2025 |
| 2025 GPC IRP | GPC's 2025 IRP filed with the Georgia PSC in January 2025 and approved in July 2024 |
| AI | Artificial intelligence |
| Alabama Power | Alabama Power Company |
| BenefitsProtection Plan | Amended and Restated Southern Company Change in Control Benefits Protection Plan |
| CD&A | Compensation Discussion & Analysis |
| CEO | Chief Executive Officer |
| CFO | Chief Financial Officer |
| COO | Chief Operating Officer |
| Clawback Policy | Southern Company Clawback Policy |
| DEU | Dividend equivalent unit |
| DirectorDeferredCompensationPlan | Deferred Compensation Plan for Outside Directors of The Southern Company |
| DGCL | Delaware General Corporation Law |
| DOE | Department of Energy |
| EPRI | Electric Power Research Institute |
| EPS | Earnings per share |
| GAAP | Generally accepted accounting principles |
| Georgia Power | Georgia Power Company |
| GHG | Greenhouse gas |
| GHG Reduction Metric | LTI metric for specific NEOs measuring the progress of the Company's fleet transition through quantitative and qualitative metrics |
| Gulf Power | Gulf Power Company, until January 1, 2019 a wholly-owned subsidiary of Southern Company |
| IRP | Integrated resource plan |
| LTI or LTI Program | Long-term incentive program offered under the Omnibus Plan |
| Mississippi Power | Mississippi Power Company |
| MW | Megawatt |
| NEOs | Named Executive Officers |
| Nicor Gas | Northern Illinois Gas Company, a wholly-owned subsidiary of Southern Company Gas |
| Notice | Notice of Internet Availability of proxy materials |
| NYSE | New York Stock Exchange |
| Omnibus Plan | The Southern Company 2021 Equity and Incentive Compensation Plan |
| Term | Definition |
|---|---|
| PPP | Performance Pay Program, a short-term incentive program |
| PowerSecure | PowerSecure, Inc., a wholly-owned subsidiary of Southern Company |
| PSC | Public service commission |
| PSU | Performance share unit under the LTI |
| R&D | Research and development |
| RecoupmentPolicy | The Southern Company and Covered Subsidiaries Compensation Recoupment Policy |
| Restated Certificate of Incorporation | The Restated Certificate of Incorporation The Southern Company, as amended May 21, 2025 |
| ROE | Return on equity |
| RSU or PRSU | Restricted stock unit or performance restricted stock unit under the LTI |
| SEC | U.S. Securities and Exchange Commission |
| SeverancePlan | Southern Company Senior Executive Change in Control Severance Plan |
| SouthernCompany,Southern, theCompany, we,us or our | The Southern Company |
| SouthernCompany Gas | Southern Company Gas, a wholly-owned subsidiary of Southern Company |
| SouthernCompanysystem | Southern Company, the traditional electric operating companies, Southern Power, Southern Company Gas, Southern Nuclear, Southern Linc, PowerSecure and other subsidiaries |
| Southern Linc | Southern Communications Services, Inc., a wholly-owned subsidiary of Southern Company, doing business as Southern Linc |
| Southern Nuclear | Southern Nuclear Operating Company, Inc., a wholly-owned subsidiary of Southern Company |
| Southern Power | Southern Power Company and its subsidiaries |
| Tax code orCode | Internal Revenue Code of 1986, as amended |
| TSR | Total shareholder return |
| Virginia Natural Gas | Virginia Natural Gas Company, a wholly-owned subsidiary of Southern Company Gas |
| Southern Company 2026 Proxy Statement | 95 |
|---|
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