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sellWeak10b5-1 plan

Christopher Cummiskey sold $1.1M of SO

EVP at SOUTHERN CO. 12,335 shares at an average of $89.54, traded May 23, 2025, filed May 27, 2025.

Warning score
30
Value
$1.1M
12,335 shares
Holdings after
22,502
-35% from before
From 52-week low
+13%
low $76.46, close $86.09
From 52-week high
-3%
high $88.54, as of May 23, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $1.1M at market
    +25
  • Share of holdings sold
    Sold 35% of holdings
    +10
  • Cluster
    No other insider selling within 14 days
    0
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

SOOct 9, 2026 · close 86.17
Since filing May 27, 2025: -0.2%SPY +33.9% · excess -34.1%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000950170-25-077437, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 23, 2025SOpen-market sale
Southern Company Common Stock10b5-1
-12,335$89.54$1.1M22,502May 27, 2025

Related signals

Other insiders at SOUTHERN CO and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
0Weak
SOsell10b5-1
SOUTHERN CO
Matthew M. Kim
Comptroller
$8,273
100 shares
-2%
38Weak
SOsell 2
SOUTHERN CO
Matthew M. Kim
Comptroller
$124k
1,400 shares
-22%
34Weak
SOsell 210b5-1
SOUTHERN CO
Peter P Sena III
Chairman,President & CEO, SNC
$378k
4,266 shares
-14%
3Weak
SOsell 210b5-1
SOUTHERN CO
Matthew M. Kim
Comptroller
$8,845
100 shares
-2%
25Weak
SOsell10b5-1
SOUTHERN CO
Stan W Connally
EVP & COO
$1.2M
12,500 shares
-8%
43Moderate
SOsell 210b5-1
SOUTHERN CO
Greene Kimberly S
Chairman, President & CEO, GPC
$3.0M
32,190 shares
-23%
20Weak
SOsell 310b5-1
SOUTHERN CO
Martin Bernard Davis
EVP & CIO
$101k
1,125 shares
-1%
12Weak
SOsell 210b5-1
SOUTHERN CO
Christopher Cummiskey
EVP
$81k
944 shares
-3%
3Weak
SOsell10b5-1
SOUTHERN CO
Christopher Cummiskey
EVP & CCO
$70k
837 shares
-4%
13Weak
SOsell 210b5-1
SOUTHERN CO
Martin Bernard Davis
EVP and CIO
$101k
1,170 shares
-1%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Christopher Cummiskey sold $1.1M of SO | InsiderTell