Michael R. Klein is Director at COSTAR GROUP, INC. (CSGP). They have made 23 open-market trades across 4 companies since 2006, most recently 2024-12-10.
CIK 0001066062
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
9 open-market purchases totalling $7.2M since 2007, against 14 sales. Across 6 scored buys the stock is up 5.0% at ninety days, and 2.4 points ahead of the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 17% | 17% | 17% |
| Avg Move | -8.8% | +3.1% | +5.0% |
| Alpha | -4.6% | +2.2% | +2.4% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CSGP | SELL | 2024-10-25 | 2024-10-28 | $74.69 | $10.7M | +1.4% | +9.0% | +1.6% |
| TPC | SELL | 2024-05-15 | 2024-05-17 | $19.70 | $14.4M | +15.3% | +8.3% | +4.5% |
| CSGP | SELL | 2022-08-05 | 2022-08-09 | $72.42 | $10.9M | -3.6% | +5.6% | +8.0% |
| TPC | SELL | 2020-12-09 | 2020-12-11 | $13.38 | $669K | +2.3% | +18.4% | +48.7% |
| TPC | SELL | 2020-12-04 | 2020-12-08 | $13.13 | $6.8M | +2.4% | +30.8% | +37.2% |
| TPC | BUY | 2020-05-18 | 2020-05-20 | $7.76 | $1.2M | +28.3% | +35.0% | +46.1% |
| CSGP | SELL | 2020-05-06 | 2020-05-08 | $639.18 | $19.2M | +5.2% | +6.2% | +28.9% |
| CSGP | SELL | 2018-08-06 | 2018-08-07 | $420.69 | $6.3M | +2.5% | +4.1% | -14.3% |
| CSGP | SELL | 2018-03-22 | 2018-03-23 | $361.61 | $1.1M | -2.8% | +1.0% | +13.6% |
| CSGP | SELL | 2017-06-26 | 2017-06-27 | $265.01 | $5.3M | +4.1% | +4.3% | +6.1% |
| THST | BUY | 2013-06-20 | 2014-07-01 | $5.56 | $974K | -16.0% | -13.9% | -13.9% |
| CSGP | SELL | 2012-09-18 | 2012-09-20 | $82.54 | $8.3M | -11.4% | -2.9% | -2.9% |
| TPC | BUY | 2011-08-09 | 2011-08-11 | $12.39 | $1.9M | -16.3% | -0.6% | -0.6% |
| CSGP | SELL | 2010-11-11 | 2010-11-12 | $50.00 | $25.0M | -11.4% | -2.9% | -2.9% |
| TPC | BUY | 2010-06-11 | 2010-06-14 | $17.46 | $524K | -16.3% | -0.6% | -0.6% |
| TPC | BUY | 2009-11-25 | 2009-11-30 | $16.88 | $189K | -16.3% | -0.6% | -0.6% |
| TPC | BUY | 2009-11-24 | 2009-11-27 | $16.35 | $62K | -16.3% | -0.6% | -0.6% |
| PCR | BUY | 2008-09-17 | 2008-09-24 | $23.67 | $947K | N/A | N/A | N/A |
| PCR | BUY | 2008-05-30 | 2008-06-03 | $40.45 | $1.0M | N/A | N/A | N/A |
| PCR | BUY | 2007-08-10 | 2007-08-14 | $47.92 | $479K | N/A | N/A | N/A |
| CSGP | SELL | 2006-03-28 | 2006-03-30 | $51.46 | $1.6M | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2006-03-16 | 2006-03-20 | $51.00 | $413K | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2006-03-13 | 2006-03-15 | $51.53 | $3.1M | -11.4% | -2.9% | -2.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.