John W. Hill is Director at COSTAR GROUP, INC. (CSGP). They have made 21 open-market trades across 2 companies since 2013, most recently 2026-08-05.
CIK 0001351689
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.
2 open-market purchases totalling $210K since 2013, against 19 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CSGP | 22,993 | $743K |
| CHSP | 26,154 | $711K |
| HIH | 2,000 | — |
| Total | $1.5M |
Shares reported on the most recent Form 4, priced at the 2026-08-10 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CSGP | SELL | 2026-08-05 | 2026-08-10 | $30.21 | $106K | +3.4% | -5.2% | — |
| CSGP | SELL | 2025-11-13 | 2025-11-17 | $68.68 | $309K | +2.7% | -3.2% | -31.7% |
| CSGP | SELL | 2024-12-10 | 2024-12-12 | $76.76 | $420K | -6.1% | -10.8% | -1.1% |
| CSGP | SELL | 2024-07-30 | 2024-08-01 | $78.16 | $104K | -5.0% | -1.5% | -4.7% |
| CSGP | SELL | 2023-11-28 | 2023-11-29 | $84.07 | $508K | +0.1% | +4.1% | +1.1% |
| CSGP | SELL | 2023-06-26 | 2023-06-28 | $86.57 | $260K | -0.3% | -7.8% | -13.9% |
| CSGP | SELL | 2023-03-31 | 2023-04-04 | $68.50 | $158K | +3.0% | +9.9% | +29.3% |
| CSGP | SELL | 2022-11-03 | 2022-11-04 | $78.92 | $288K | +2.5% | +1.6% | -0.6% |
| CSGP | SELL | 2022-08-10 | 2022-08-11 | $74.49 | $104K | -3.5% | +5.9% | +7.8% |
| CSGP | SELL | 2022-05-24 | 2022-05-26 | $57.07 | $200K | +2.6% | +3.3% | +19.0% |
| CSGP | SELL | 2021-10-29 | 2021-11-02 | $86.97 | $1.6M | -2.6% | -7.5% | -17.6% |
| CSGP | SELL | 2021-08-09 | 2021-08-11 | $85.77 | $1.1M | -1.0% | +6.8% | -1.4% |
| CSGP | SELL | 2019-12-31 | 2020-01-02 | $591.90 | $296K | +4.0% | +7.2% | -12.3% |
| CSGP | SELL | 2019-06-24 | 2019-06-25 | $553.23 | $349K | +4.1% | +16.5% | +10.2% |
| CSGP | SELL | 2018-12-26 | 2018-12-28 | $330.88 | $690K | +6.0% | +12.7% | +36.1% |
| CSGP | SELL | 2018-03-29 | 2018-03-30 | $361.28 | $831K | -0.9% | +1.2% | +14.6% |
| CSGP | SELL | 2017-05-02 | 2017-05-03 | $244.52 | $215K | +3.4% | +6.1% | +11.4% |
| CHSP | BUY | 2014-05-28 | 2014-05-29 | $28.66 | $29K | -1.7% | -0.5% | -0.5% |
| CHSP | SELL | 2014-05-28 | 2014-05-29 | $28.62 | $17K | -1.7% | -0.5% | -0.5% |
| CHSP | SELL | 2013-08-16 | 2013-08-19 | $22.46 | $90K | -1.7% | -0.5% | -0.5% |
| CHSP | BUY | 2013-08-16 | 2013-08-19 | $22.61 | $181K | -1.7% | -0.5% | -0.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.