Southern Company SO
Southern Company is the 113th largest S&P 500 company by market cap, worth $107 billion. 13 directors have filed with the SEC in the last 12 months (who counts). 13 officers are on file. At 30 Jun 2026, Vanguard was its largest institutional holder, with 10.0% of the company.
- Chair and CEO
- Christopher C. Womack
- Sector
- Utilities
- Sub-industry
- Electric Utilities
- Headquarters
- Atlanta, Georgia
- Founded
- 1945
- More
- Wikipedia
- Market cap
- $107B
- 113th largest, 23 Oct 2026 close
- Price to sales
- 3.6
- Market cap over revenue
- Market cap per employee
- $3.6M
- Market cap over employees
- Connections
- 7
- S&P 500 companies sharing a director or officer
Largest institutional holders
Each fund group's share of Southern Company. Where a company has several share classes, the share is of its total value.
13F filings for the quarter to 30 Jun 2026
Board and officers
7 people here also hold roles at other S&P 500 companies.
Roles filed up to 30 Sep 2026
| Name | Title |
|---|---|
| Directors (13) | |
| Janaki AkellaDirectorAlso at Akamai Technologies | |
| Shantella E. CooperDirectorAlso at Intercontinental Exchange | |
| Anthony F. Earley Jr.Director | |
| James O. EtheredgeDirector | |
| David J. GrainDirectorAlso at Dell Technologies | |
| Donald M. JamesDirector | |
| John D. JohnsDirector | |
| Dale E. KleinDirector | |
| David E. MeadorDirector | |
| William G. Smith Jr.Director | |
| Kristine L. SvinickiDirectorAlso at Pinnacle West Capital | |
| Lizanne ThomasDirector | |
| John M. Turner Jr.DirectorAlso at Regions Financial | |
| Officers (13) | |
| Christopher C. WomackChairman, President & CEOAlso at InvescoLast filed 26 May 2026 | |
| David P. PorochEVP & CFOLast filed 13 Feb 2026 | |
| Bryan D. AndersonEVPLast filed 13 Feb 2026 | |
| Pedro P. CherryChairman, President & CEO, MPCLast filed 13 Feb 2026 | |
| Stan W. ConnallyEVP & COOLast filed 19 Mar 2026 | |
| Christopher CummiskeyEVPLast filed 19 Mar 2026 | |
| Sloane N. DrakeEVP & CHROLast filed 10 Mar 2026 | |
| Kimberly S. GreeneChairman, President & CEO, GPCAlso at Valero EnergyLast filed 31 Mar 2026 | |
| James Y. Kerr IIChairman, President & CEO, GASLast filed 13 Feb 2026 | |
| Matthew M. KimComptrollerLast filed 4 Sep 2026 | |
| James Jeffrey PeoplesChairman, President & CEO, APCLast filed 13 Feb 2026 | |
| Peter P. Sena IIIChairman,President & CEO, SNCLast filed 4 Sep 2026 | |
| Sterling A. Spainhour Jr.EVP & CLOLast filed 7 Aug 2026 | |
Companies that share people with Southern Company
Each person's title here, then at the other company.
- Akamai Technologies AKAM
- Janaki Akella: Director here, Director there
- Dell Technologies DELL
- David J. Grain: Director here, Director there
- Intercontinental Exchange ICE
- Shantella E. Cooper: Director here, Director there
- Invesco IVZ
- Christopher C. Womack: Chairman, President & CEO here, Director there
- Pinnacle West Capital PNW
- Kristine L. Svinicki: Director here, Director there
- Regions Financial RF
- John M. Turner Jr.: Director here, Chairman, President and CEO there
- Valero Energy VLO
- Kimberly S. Greene: Chairman, President & CEO, GPC here, Director there
Southern Company's market cap since December 2008
Weekly, up to 23 Oct 2026
| Week ending | Market cap |
|---|---|
| 23 Oct 2026 | $107B |
| 26 Dec 2025 | $96.0B |
| 27 Dec 2024 | $91.1B |
| 29 Dec 2023 | $76.5B |
| 30 Dec 2022 | $77.7B |
| 31 Dec 2021 | $72.7B |
| 25 Dec 2020 | $63.2B |
| 27 Dec 2019 | $66.5B |
| 28 Dec 2018 | $45.2B |
| 29 Dec 2017 | $48.3B |
| 30 Dec 2016 | $48.2B |
| 25 Dec 2015 | $42.8B |
| 26 Dec 2014 | $45.4B |
| 27 Dec 2013 | $36.0B |
| 28 Dec 2012 | $37.0B |
| 30 Dec 2011 | $39.9B |
| 31 Dec 2010 | $32.1B |
| 25 Dec 2009 | $26.8B |
| 26 Dec 2008 | $27.8B |
Download Southern Company's data as JSON, with the weekly market caps in billions of dollars from 5 Dec 2008.
Workforce
Headcount at 31 Dec 2025
- Employees
- 29,800
The Southern Company system had approximately 29,800 employees on its payroll at December 31, 2025 comprised of the following: At December 31, 2025(*)Alabama Power6,100Georgia Power7,700Mississippi Power1,100Southern Power500Southern Company Gas5,000SCS4,800Southern Nuclear3,700PowerSecure and other900Total Southern Company system29,800(*)Numbers are rounded to 100s.I-13 Table of Contents Index to Financial StatementsAll Southern Company system employees are located within the United States.
Insider trades
Open-market buys and sales by directors and officers. Grants, option exercises and shares withheld for tax are left out.
Trades from 30 Sep 2025 to 30 Sep 2026
Directors and officers sold $6.2 million of stock in 13 sales and made no open-market purchases in the 12 months to 30 Sep 2026.
| Date | Person | Value |
|---|---|---|
| 3 Sep 2026Sale | Peter P. Sena IIIChairman,President & CEO, SNC | $378K |
| 3 Sep 2026Sale | Matthew M. KimComptroller | $124K |
| 1 Sep 2026Sale | Matthew M. KimComptroller | $9K |
| 6 Aug 2026Sale | Sterling A. Spainhour Jr.EVP & CLO | $313K |
| 3 Aug 2026Sale | Matthew M. KimComptroller | $9K |
| 1 Jul 2026Sale | Matthew M. KimComptroller | $10K |
| 1 Jun 2026Sale | Matthew M. KimComptroller | $9K |
| 1 May 2026Sale | Matthew M. KimComptroller | $10K |
| 30 Mar 2026Sale | Kimberly S. GreeneChairman, President & CEO, GPC | $2.4M |
| 19 Mar 2026Sale | Christopher CummiskeyEVP | $644K |
Showing 10 of 13 trades
Trades by members of Congress and officials
Trades members of Congress and senior executive branch officials disclosed, including their families'. Amounts are filed as ranges.
Trades from 20 Oct 2023 to 20 Oct 2026
8 people disclosed 22 purchases and 11 sales of Southern Company stock since October 2023.
| Date | Member or official | Amount |
|---|---|---|
| 23 Jul 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
| 12 Jun 2026 | Donald J TrumpPresident 路 Sold | $1K to $15K |
| 3 Jun 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
| 18 May 2026 | Donald J TrumpPresident 路 Sold | $15K to $50K |
| 18 May 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
| 11 May 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
| 28 Apr 2026 | Donald J TrumpPresident 路 Sold | $1K to $15K |
| 27 Apr 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
| 17 Apr 2026 | Donald J TrumpPresident 路 Sold | $1K to $15K |
| 23 Mar 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
Showing 10 of 33 trades
Not on file: no WARN layoff notices under its own name since October 2023.