Louise S Sams bought $48k of CSGP
director at COSTAR GROUP, INC.. 1,000 shares at an average of $48.36, traded Mar 6, 2026, filed Mar 9, 2026.
Score components
- +15RoleDirector
- +7Trade size$48k at market
- +3Relative to holdingsHoldings up 5%
- +18Price context8% above the 52-week low; 50% below the 52-week high
- +15Cluster4 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
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 -19.8%, 3m -31.0%, 6m -36.2%.
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 0001057352-26-000022, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Mar 6, 2026 | POpen-market purchase Common Stock, par value $0.01 per share | +1,000 | $48.36 | $48k | 20,409 | Mar 9, 2026 |
Related signals
Other insiders at COSTAR GROUP, INC. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 38Weak | COSTAR GROUP, INC. | John W Hill director | $106k 3,500 shares | -13% | |
| 39Weak | COSTAR GROUP, INC. | Cynthia Cammett Cann Chief Accounting Officer | $147k 4,788 shares | -20% | |
| 68Notable | CSGPbuy COSTAR GROUP, INC. | Andrew C Florance Founder and CEO | $2.5M 83,300 shares | +5% | |
| 73Notable | CSGPbuy COSTAR GROUP, INC. | Andrew C Florance President and CEO | $2.5M 71,430 shares | +4% | |
| 60Notable | COSTAR GROUP, INC. | Rachel C Glaser director | $45k 1,000 shares | +32% | |
| 80Strong | COSTAR GROUP, INC. | G. Saint Frederick President, Marketplaces | $907k 20,000 shares | +8% | |
| 83Strong | COSTAR GROUP, INC. | Andrew C Florance President and CEO | $2.5M 55,720 shares | +4% | |
| 34Weak | COSTAR GROUP, INC. | Cynthia Cammett Cann Chief Accounting Officer | $127k 1,841 shares | -7% | |
| 39Weak | COSTAR GROUP, INC. | John W Hill director | $155k 2,250 shares | -11% | |
| 45Moderate | CSGPsell COSTAR GROUP, INC. | G. Saint Frederick President, Marketplaces | $2.3M 25,000 shares | -8% |
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.