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SOUTHERN CO

For the period ended May 21, 2025. Filed Apr 11, 2025.

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About this filing

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 21, 2025 · Filed Apr 11, 2025

SO$92.34-1.1%Stored close · as of Nov 6, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No. )

☑Filed by the Registrant☐Filed by a party other than the Registrant
CHECK THE APPROPRIATE BOX:
☐Preliminary Proxy Statement
☐Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☑Definitive Proxy Statement
☐Definitive Additional Materials
☐Soliciting Material under §240.14a-12

The Southern Company

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

PAYMENT OF FILING FEE (CHECK ALL BOXES THAT APPLY):
☑No fee required
☐Fee paid previously with preliminary materials
☐Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

Our Company

Capabilities in · More than
45,000 MW50 States9 million28,0007
of generating capacityCustomersEmployeesElectric & naturalgas utilities

Our Major Subsidiaries

1.6 millionelectric utility customers2.8 millionelectric utility customers193,000electric utility customers
12,600 MWof wholesale solar, wind, natural gas and clean alternative technology provider in 15 states4.4 millionnatural gas distribution customers across four state-regulated, wholesale and retail energy businesses and gas storage facilities in the U.S.
4Atlanta Gas Light (GA)4Chattanooga Gas (TN)4Nicor Gas (IL)4Virginia Natural Gas (VA)
Wireless communications serviceA national leader in distributed infrastructure technologies doing business nationwideAn innovative leader among the nation’s nuclear energy industry

Our ValuesAt Southern Company, Our Values establish the foundational behaviors that guide how we work and outline how we make decisions and take actions. Our Values reflect how we lead, engage, collaborate and perform as One Team. Living Our Values is how we make each other better and deliver clean, safe reliable and affordable energy solutions for our customers and communities. This is what we mean when we say we are bigger than our bottom line.At Southern Company, Our Values will guide us to make every decision, every day, in the right way.

Safety FirstWe actively care about the safety and well-being of our employees, customers and communities. Safely approaching every job, every day, always comes first.

Intentional InclusionWe are One Team, working to foster a culture of belonging and ensuring our diverse team feels valued. Investing in an equitable culture benefits our employees, customers, communities and stockholders.

Act with IntegrityWe act with honesty, respect and fairness, demonstrating trustworthiness in all we do. We are true to our word and follow through on our commitments.

Superior PerformanceWe keep customers at the center of everything that we do, with a focus on continuous improvement. We will continue our strong focus on innovative solutions, improving how we run our business and our commitment to environmental stewardship.

Cover Photo: Crews and equipment staged in Brunswick, Georgia ready to restore service in the aftermath of Hurricane Helene

Table of Contents

Notice of Annual Meeting of Stockholders of Southern Company2
Letter from our Chairman and Chief Executive Officer3
Letter from our Independent Directors4
Company Performance5
Proxy Voting Roadmap10
Governance12
ITEM 1 Election of 13 Directors12
Governance Highlights12
Board of Director Nominees Qualifications, Attributes, Skills and Experience13
Board Refreshment, Board Succession Planning and Board Composition14
Board Nomination Process15
Biographical Information about our Nominees for Director18
Committees of the Board25
Board Composition and Structure28
Board Independence30
Board and Committee Responsibilities31
Oversight of Strategy and Risk31
Engaging with our Stakeholders36
Director Compensation38
ITEM 2 Advisory Vote to Approve Executive Compensation (Say on Pay)40
Compensation Discussion and Analysis41
Letter from the Compensation and Talent Development Committee42
CEO Pay for Performance Alignment43
Stockholder Outreach and Say on Pay Response45
Executive Compensation Program46
Compensation Governance59
Executive Compensation Tables64
Equity Compensation Plan Information75
Pay Ratio Disclosure76
Pay Versus Performance Disclosure76
Audit Committee Matters80
Audit Committee Report80
ITEM 3 Ratify the Independent Registered Public Accounting Firm for 202581
ITEM 4 Approve an Amendment to the Restated Certificate of Incorporation to Reduce the Supermajority Vote Requirement to a Majority Vote82
ITEMS 5-8 Vote on Four Stockholder Proposals84
Stock Ownership Information91
FAQs about Voting and the Annual Meeting93
Reconciliation of Non-GAAP Information98
Cautionary Note Regarding Forward-Looking Statements99
Appendix A - Definitions of Key Terms101
Appendix B - Benefit Plan Summary102

Southern Company is a holding company that conducts its business through its subsidiaries; accordingly, unless the context otherwise requires, references in this proxy statement to Southern Company’s operations, such as generating activities, greenhouse gas (GHG) emissions and employment practices, refer to those operations conducted through its subsidiaries.

Links to websites included in this proxy statement are provided solely for convenience purposes. Content on the websites, including content on our Company website, is not, and shall not be deemed to be, part of this proxy statement or incorporated herein or into any of our other filings with the Securities and Exchange Commission (SEC).

See Appendix A - Definitions of Key Terms onpage 101 for many key terms and acronyms used in this proxy statement.

Southern Company 2025 Proxy Statement1
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.