SO
SOUTHERN CO · Energy · Market cap $97.9B
Insiders sold $844K net in the last 90 days ·3 sellers, 0 buyers· latest Form 4 filed Sep 4, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$6.2M
reported sales (SEC code S)
Unique Insiders
7
in the rolling window
Latest filing
Sep 4, 2026
Kim Matthew M.
SOUTHERN CO (SO) has 50 SEC Form 4 filings (137 transaction rows) in the rolling window, disclosed by 7 distinct insiders. Most recent filing: Sep 4, 2026.
Inside the rolling window, 7 insiders at SOUTHERN CO reported no open-market purchases and 13 open-market sales totaling $6.2M. The most active filer is Comptroller Kim Matthew M. with 7 filings. Insiders have net sold $5.1M over the trailing 6 months. The most recent open-market filing is a sale of 1,400 shares by Comptroller Kim Matthew M., dated Sep 3, 2026, worth $124K.
- Industry:Regulated Electric
- CEO:Christopher C. Womack
- Employees:29,800
- HQ:Atlanta, GA, US
- IPO:1981-12-31
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Comptroller | Sale | 1,400 | $124K | Sep 4 | -1.5% | SEC ↗ | |
Sena Peter P IIIFirst filing | Chairman,President & CEO, SNC | Sale | 4,266 | $378K | Sep 4 | -1.5% | SEC ↗ |
| Comptroller | Sale | 100 | $9K | Sep 3 | -2.3% | SEC ↗ | |
Spainhour Sterling A Jr.First filing | EVP & CLO | Sale | 3,333 | $313K | Aug 7 | -6.4% | SEC ↗ |
| Comptroller | Sale | 100 | $9K | Aug 4 | -7.0% | SEC ↗ | |
| Comptroller | Sale | 100 | $10K | Jul 2 | -11.5% | SEC ↗ | |
| Comptroller | Sale | 100 | $9K | Jun 1 | -2.5% | SEC ↗ | |
| Comptroller | Sale | 100 | $10K | May 4 | -9.6% | SEC ↗ | |
Greene Kimberly S,First filing | Chairman, President & CEO, GPC | Sale | 25,000 | $2.4M | Mar 31 | -10.1% | SEC ↗ |
Cummiskey ChristopherFirst filing | EVP | Sale | 6,669 | $644K | Mar 19 | -9.8% | SEC ↗ |
Connally Stan WFirst filing | EVP & COO | Sale | 12,500 | $1.2M | Mar 19 | — | SEC ↗ |
Kim Matthew M.First filing | Comptroller | Sale | 5,123 | $487K | Feb 25 | — | SEC ↗ |
Anderson Bryan DFirst filing | EVP | Sale | 6,206 | $582K | Oct 1 | — | SEC ↗ |
Congress trading SO 52 all-time
- DRep. Ro KhannaSale$1,001 - $15,0002026-01-29
- DRep. Jared MoskowitzPurchase$1,001 - $15,0002025-12-02
- DRep. Val HoyleOther$1,001 - $15,0002025-09-23
- DRep. Val HoylePurchase$1,001 - $15,0002024-10-29
- RRep. Marjorie Taylor GreenePurchase$1,001 - $15,0002025-08-28
- DRep. Jared MoskowitzPurchase$1,001 - $15,0002025-04-07
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does SO have?
SOUTHERN CO (SO) has 50 SEC Form 4 filings (137 transaction rows) in the rolling 365-day window, disclosed by 7 distinct insiders. Most recent filing: Sep 4, 2026.
When was the most recent SEC Form 4 filing for SO?
The most recent Form 4 filing for SO on Tracefour is dated Sep 4, 2026.
Who is the most active insider at SO?
The most active SEC Form 4 filer at SO in the rolling window is Comptroller Kim Matthew M., with 7 filings.
What is the net insider flow at SO over the last 6 months?
Over the trailing 180 days, insiders at SO have net sold $5.1M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at SO in the current window?
Inside the rolling window, insiders at SO bought $0 and sold $6.2M based on SEC Form 4 filings.
Can I get alerts for SO insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at SOUTHERN CO (SO). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
SOUTHERN CO is in the Energy sector.