InsiderSource
SO

SOUTHERN CO

SEC CIK 92122
$92.53 +5.2% · 90 days
90-day buys
$0
0 open-market
90-day sells
$2.44M
3 open-market
Net insider flow
−$2.44M
Net selling
Filings shown
77
Most recent
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At a glance

Over the last 90 days, insiders at SO have sold a net $2.44M of stock (0 open-market buys vs 3 sells).

Largest recent trade: Crosswhite Mark A. sold $8.92M of SO, trimming their stake 97%.

Most active filer: Greene Kimberly S,, with 20 transactions among the recent filings shown.

Insider transaction history

Form 4 filings for SO, newest first
View on SEC EDGAR ↗
SO
SOUTHERN CO
Sell Kim Matthew M. · Comptroller · Open-market sale · filed 2w ago ΔOwn −1.5%

Kim Matthew M. sold $9.1K of SO, trimming their stake 1%.

−$9.1K
100 sh @ $91
SO
SOUTHERN CO
Tax withholding WOMACK CHRISTOPHER C · Chairman, President & CEO · Tax withholding · filed 3w ago ΔOwn −1.6%
−$322.8K
3,414 sh @ $95
SO
SOUTHERN CO
Sell Kim Matthew M. · Comptroller · Open-market sale · filed May 4, 2026 ΔOwn −1.5%

Kim Matthew M. sold $9.7K of SO, trimming their stake 1%.

−$9.7K
100 sh @ $97
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SO
SOUTHERN CO
Tax withholding Kim Matthew M. · Comptroller · Tax withholding · filed Apr 2, 2026 ΔOwn −1.2%
−$7.9K
82 sh @ $97
SO
SOUTHERN CO
Sell Greene Kimberly S, · Chairman, President & CEO, GPC · Open-market sale · filed Mar 31, 2026 ΔOwn −19%

Greene Kimberly S, sold $2.42M of SO, trimming their stake 19%.

−$2.42M
25,000 sh @ $97
SO
SOUTHERN CO
Sell Cummiskey Christopher · EVP · Open-market sale · filed Mar 19, 2026 ΔOwn −18%

Cummiskey Christopher sold $643.9K of SO, trimming their stake 18%.

−$643.9K
6,669 sh @ $97
SO
SOUTHERN CO
Sell Connally Stan W · EVP & COO · Open-market sale · filed Mar 19, 2026 ΔOwn −7.2%

Connally Stan W sold $1.21M of SO, trimming their stake 7%.

−$1.21M
12,500 sh @ $97
SO
SOUTHERN CO
Option exercise Drake Sloane N · EVP & CHRO · Option exercise · filed Mar 10, 2026 ΔOwn +3.7%
+$0
1,420 sh
SO
SOUTHERN CO
Tax withholding Drake Sloane N · EVP & CHRO · Tax withholding · filed Mar 10, 2026 ΔOwn −1.6%
−$61.7K
633 sh @ $97
SO
SOUTHERN CO
Sell Kim Matthew M. · Comptroller · Open-market sale · filed Feb 25, 2026 ΔOwn −43%

Kim Matthew M. sold $487.5K of SO, trimming their stake 43%.

−$487.5K
5,123 sh @ $95
SO
SOUTHERN CO
Tax withholding WOMACK CHRISTOPHER C · Chairman, President & CEO · Tax withholding · filed Feb 17, 2026 ΔOwn −17%
−$2.52M
27,715 sh @ $91
SO
SOUTHERN CO
Tax withholding WOMACK CHRISTOPHER C · Chairman, President & CEO · Tax withholding · filed Feb 17, 2026 ΔOwn −4.5%
−$615.3K
6,772 sh @ $91
SO
SOUTHERN CO
Tax withholding WOMACK CHRISTOPHER C · Chairman, President & CEO · Tax withholding · filed Feb 17, 2026 ΔOwn −20%
−$4.75M
52,259 sh @ $91
SO
SOUTHERN CO
Sell Spainhour Sterling A Jr. · EVP & CLO · Open-market sale · filed Aug 12, 2025 ΔOwn −12%

Spainhour Sterling A Jr. sold $226.1K of SO, trimming their stake 12%.

−$226.1K
2,380 sh @ $95
SO
SOUTHERN CO
Sell Greene Kimberly S, · Chairman, President & CEO, GPC · Open-market sale · filed Jul 22, 2025 ΔOwn −12%

Greene Kimberly S, sold $1.25M of SO, trimming their stake 12%.

−$1.25M
13,158 sh @ $95
SO
SOUTHERN CO
Sell Cummiskey Christopher · EVP · Open-market sale · filed May 27, 2025 ΔOwn −35%

Cummiskey Christopher sold $1.1M of SO, trimming their stake 35%.

−$1.1M
12,335 sh @ $90
SO
SOUTHERN CO
Sell Connally Stan W · EVP & COO · Open-market sale · filed Apr 1, 2025 ΔOwn −7.7%

Connally Stan W sold $1.15M of SO, trimming their stake 8%.

−$1.15M
12,500 sh @ $92
SO
SOUTHERN CO
Sell Greene Kimberly S, · Chairman, President & CEO, GPC · Open-market sale · filed Mar 11, 2025 ΔOwn −23%

Greene Kimberly S, sold $3M of SO, trimming their stake 23%.

−$3M
32,190 sh @ $93
SO
SOUTHERN CO
Sell WOMACK CHRISTOPHER C · Chairman, President & CEO · Open-market sale · filed Mar 4, 2025 ΔOwn −22%

Womack Christopher C sold $2.2M of SO, trimming their stake 22%.

−$2.2M
24,407 sh @ $90
SO
SOUTHERN CO
Sell WOMACK CHRISTOPHER C · Chairman, President & CEO · Open-market sale · filed Feb 26, 2025 ΔOwn −1.4%

Womack Christopher C sold $143.4K of SO, trimming their stake 1%.

−$143.4K
1,593 sh @ $90
SO
SOUTHERN CO
Sell Cummiskey Christopher · EVP · Open-market sale · filed Feb 20, 2025 ΔOwn −2.6%

Cummiskey Christopher sold $81.2K of SO, trimming their stake 3%.

−$81.2K
944 sh @ $86
SO
SOUTHERN CO
Sell Cummiskey Christopher · EVP & CCO · Open-market sale · filed Feb 5, 2025 ΔOwn −3.6%

Cummiskey Christopher sold $69.7K of SO, trimming their stake 4%.

−$69.7K
837 sh @ $83
SO
SOUTHERN CO
Sell WOMACK CHRISTOPHER C · CEO, President and Chairman · Open-market sale · filed Dec 6, 2024 ΔOwn −16%

Womack Christopher C sold $1.21M of SO, trimming their stake 16%.

−$1.21M
14,000 sh @ $86
SO
SOUTHERN CO
Sell Spainhour Sterling A Jr. · EVP, Chief Legal Officer & CCO · Open-market sale · filed Nov 5, 2024 ΔOwn −6.3%

Spainhour Sterling A Jr. sold $70.2K of SO, trimming their stake 6%.

−$70.2K
793 sh @ $89
SO
SOUTHERN CO
Sell Spainhour Sterling A Jr. · EVP, Chief Legal Officer & CCO · Open-market sale · filed Aug 6, 2024 ΔOwn −16%

Spainhour Sterling A Jr. sold $211.8K of SO, trimming their stake 16%.

−$211.8K
2,380 sh @ $89
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About SO insider activity

This page tracks every recent Form 4 filed for SOUTHERN CO with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is SO insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for SOUTHERN CO usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.