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Southern Co: what insiders have been doing
Southern Co, founded in 1945, is a Energy company based in Atlanta, United States. Its directors and officers file their transactions with SEC (Form 4). From 18 October 2025 to 18 October 2026, the disclosure feed for Southern Co logged 53 filings by 18 insiders.
There is no open-market purchase to report; the filings show 10 sales worth €4.9M by 6 insiders. Greene Kimberly S, filed the largest sale, €2.1M, on 31 March 2026.
Filings reach the SEC (Form 4) feed a median of 2 days after the trade. Section 16 rules allow two business days to file each Form 4. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify.
Across the 5,458 companies tracked on its exchange, the median is 22 filings; at 53 filings, this issuer sits above that mark. Since 2016, the database holds no purchases and 90 sales by insiders of the company. The 10-K for the year ended 31 December 2025 shows 29.55 bn USD of revenue and 4.34 bn USD of net income and a dividend of 2.94 USD per share.
Elsewhere in the same sector, our signals recently picked up insider purchases at RGC Resources Inc and Empire Petroleum Corp. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Insider Decl.
360
Thresholds
n/a
Buy Volume
n/a
n/a
Sell Volume
€47M
90 ops. · all time
Who traded when
BuySaleMatthew M. Kim5 sales
Christopher Cummiskey4 sales
Christopher C. Womack3 sales
Greene Kimberly S,3 sales
Sterling A. Spainhour Jr.3 sales
Davis Martin Bernard2 sales
+4 other insiders
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Fundamental score
Ranked 9,248 of 24,148 companies
57.4
score / 100
Value56
Quality59
FCF yld-5.6%
Earn yld8.2%
EV/EBITDA8.9x
ROE11%
Gross mgn48%
Net mgn15%
Debt/EBITDA5.2x
Pillars2/3
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
US$47.10
Analyst consensus
Income statement
RevenueUS$29.6B
Gross profitUS$14.3B48% margin
EBITDAUS$14.3B48% margin
Net incomeUS$4.3B15.4% margin
Valuation
P/Book1.4x
Beta0.30
Balance sheet & cash
Market capUS$52.7B
Total debtUS$74.1B
Free Cash Flow-US$2.9B
Debt / Equity182%
Profitability & ownership
ROE11.5%
ROA3.3%
% insiders0.0%
% institutions116.1%
Last declaration on 1 October 2026
Declarations360 total
100 shares@ US$82.73100.0% of flowCommonSEC144:0001628280-26-064248
100 shares@ US$82.731.3% of flowSouthern Company Common StockSEC:0001193125-26-410627:0
1,400 shares@ US$88.8719.8% of flowSouthern Company Common StockSEC:0001193125-26-383300:0
4,266 shares@ US$88.59100.0% of flowSouthern Company Common StockSEC:0001193125-26-383301:0
4,266 shares@ US$88.590.0003% mcap100.0% of flowCommonSEC144:0001628280-26-060387
1,400 shares@ US$88.870.0001% mcap92.7% of flowCommonSEC144:0001628280-26-060384
100 shares@ US$88.451.4% of flowSouthern Company Common StockSEC:0001193125-26-381193:0
3,333 shares@ US$94.0221.6% of flowSouthern Company Common StockSEC:0001193125-26-340057:0
3,333 shares@ US$94.02100.0% of flowCOMMONSEC144:0001628280-26-054260
100 shares@ US$94.281.5% of flowSouthern Company Common StockSEC:0001193125-26-331835:0
100 shares@ US$94.280.0000% mcap100.0% of flowCommonSEC144:0001628280-26-051785
100 shares@ US$95.770.0000% mcap7.3% of flowCOMMONSEC144:0001628280-26-046530
82 shares0Southern Company Common StockSEC:0001193125-26-140265:0
82 shares@ US$96.941.3% of flowSouthern Company Common StockSEC:0001193125-26-140265:1
25,000 shares@ US$96.6714.7% of flowSouthern Company Common StockSEC:0001193125-26-134334:0
12,500 shares@ US$97.1349.7% of flowSouthern Company Common StockSEC:0001193125-26-115763:0
6,669 shares@ US$96.5515.9% of flowSouthern Company Common StockSEC:0001193125-26-115921:0
6,330.007 shares@ US$97.6442.4% of flowSouthern Company Common StockSEC:0001193125-26-100026:0
1,420 shares0Southern Company Common StockSEC:0001193125-26-100033:0
15,000 shares0Southern Company Common Stock HoldingSEC:0001167316-26-000001:0
5,123 shares@ US$95.1576.1% of flowSouthern Company Common StockSEC:0001193125-26-071778:0
62,223 shares0Southern Company Common StockSEC:0001193125-26-054369:0
4,450 shares0Southern Company Common StockSEC:0001193125-26-051209:0
44,522 shares0Southern Company Common StockSEC:0001193125-26-051202:0
51,855 shares0Southern Company Common StockSEC:0001193125-26-051200:0
25 of 360 declarations
About Southern Co
Southern Company is a leading U.S. energy group listed on the NYSE in the United States, where its common stock trades under the ticker SO. For international investors, it is best understood as a large regulated utility platform rather than a cyclical growth story. The company is headquartered in Atlanta, Georgia, and its roots go back more than a century: Southern Company traces its origins to 1906, when predecessor Alabama Traction, Light and Power Company was founded. That long operating history matters because it reflects a deep regulatory, operational, and geographic footprint across the U.S. Southeast. ([southerncompany.com](https://www.southerncompany.com/about.html?utm_source=openai))
Southern Company’s business model is built around several complementary segments. It operates regulated electric utilities in three states and natural gas distribution companies in four states, while also participating in wholesale power generation, distributed energy solutions, and related infrastructure businesses. The group serves roughly 9 million customers and businesses, primarily across the Southeast, with some broader national activity in energy services and fiber-optic connectivity. Its portfolio spans generation, transmission, distribution, and energy marketing, giving it a diversified profile within the U.S. utilities landscape. ([southerncompany.com](https://www.southerncompany.com/about/our-business/our-companies.html?utm_source=openai))
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From a competitive standpoint, Southern Company benefits from the traditional strengths of large regulated utilities: scale, a sizable asset base, predictable cash generation, and long-standing relationships with regulators. The company highlights more than 27,000 miles of transmission lines, 3,700 substations, and an operating position that makes it one of the largest electricity producers in the United States and the largest wholesale power provider in the Southeast. Its combination of electric and gas operations also provides some diversification versus single-utility peers. ([southerncompany.com](https://www.southerncompany.com/about/our-business/our-companies.html?utm_source=openai))
On the product and service side, Southern Company supplies electricity to residential, commercial, and critical infrastructure customers, distributes natural gas through multiple subsidiaries, and continues to invest in nuclear, renewables, transportation electrification, and distributed energy offerings. A notable recent development came on April 30, 2026, when the company reported first-quarter 2026 results, including operating revenues of $8.4 billion versus $7.8 billion a year earlier, helped by higher utility revenues, partly offset by milder-than-normal weather and higher interest expense. For investors, the stock represents a defensive, regulated U.S. utility with a broad Southeastern footprint, a large capital program, and ongoing exposure to the long-term energy transition. ([nasdaq.com](https://www.nasdaq.com/press-release/southern-company-reports-first-quarter-2026-earnings-2026-04-30?utm_source=openai))
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