Matthew M. Kim sold $124k of SO
Comptroller at SOUTHERN CO. 1,400 shares at an average of $88.87, traded Sep 3, 2026, filed Sep 4, 2026.
Score components
- +15RoleOfficer
- +10Trade size$124k at market
- +5Share of holdings soldSold 22% of holdings
- +8Cluster2 insiders selling within 14 days
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.
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 0001193125-26-383300, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 3, 2026 | SOpen-market sale Southern Company Common Stock | -1,400 | $88.87 | $124k | 4,988 | 38 d ago |
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% | |
| 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% | |
| 19Weak | SOUTHERN CO | Bryan D Anderson EVP | $582k 6,206 shares | -11% | |
| 13Weak | SOUTHERN CO | Sterling A Spainhour Jr. EVP & CLO | $226k 2,380 shares | -12% | |
| 35Weak | SOUTHERN CO | Greene Kimberly S Chairman, President & CEO, GPC | $1.3M 13,158 shares | -12% | |
| 30Weak | SOUTHERN CO | Christopher Cummiskey EVP | $1.1M 12,335 shares | -35% | |
| 25Weak | SOUTHERN CO | Stan W Connally EVP & COO | $1.2M 12,500 shares | -8% | |
| 43Moderate | SOUTHERN CO | Greene Kimberly S Chairman, President & CEO, GPC | $3.0M 32,190 shares | -23% | |
| 20Weak | SOUTHERN CO | Martin Bernard Davis EVP & CIO | $101k 1,125 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.