Matthew M. Kim sold $487k of SO
Comptroller at SOUTHERN CO. 5,123 shares at an average of $95.15, traded Feb 24, 2026, filed Feb 25, 2026.
Score components
- +15RoleOfficer
- +18Trade size$487k at market
- +10Share of holdings soldSold 43% of holdings
- 0ClusterNo other insider selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
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.
This signal so far: 1m -0.4%, 3m -1.5%, 6m -4.9%.
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.
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 0001193125-26-071778, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Feb 24, 2026 | SOpen-market sale Southern Company Common Stock10b5-1 | -5,123 | $95.15 | $487k | 6,888 | Feb 25, 2026 |
Related signals
Other insiders at SOUTHERN CO and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 0Weak | SOUTHERN CO | Matthew M. Kim Comptroller | $8,273 100 shares | -2% | |
| 38Weak | SOUTHERN CO | Matthew M. Kim Comptroller | $124k 1,400 shares | -22% | |
| 34Weak | SOUTHERN CO | Peter P Sena III Chairman,President & CEO, SNC | $378k 4,266 shares | -14% | |
| 3Weak | SOUTHERN CO | Matthew M. Kim Comptroller | $8,845 100 shares | -2% | |
| 0Weak | SOUTHERN CO | Matthew M. Kim Comptroller | $9,116 100 shares | -1% | |
| 0Weak | SOUTHERN CO | Matthew M. Kim Comptroller | $9,657 100 shares | -1% | |
| 50Moderate | SOUTHERN CO | Greene Kimberly S Chairman, President & CEO, GPC | $2.4M 25,000 shares | -19% | |
| 40Moderate | SOUTHERN CO | Stan W Connally EVP & COO | $1.2M 12,500 shares | -7% | |
| 55Moderate | SOUTHERN CO | Christopher Cummiskey EVP | $644k 6,669 shares | -18% | |
| 19Weak | SOUTHERN CO | Bryan D Anderson EVP | $582k 6,206 shares | -11% |
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.