William George is CFO at COMFORT SYSTEMS USA INC (FIX). They have made 46 open-market trades across 5 companies since 2006, most recently 2026-08-17.
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.
6 open-market purchases totalling $235K since 2011, against 40 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| FIX | 30,250 | $43.5M |
| POWI | 5,234 | $233K |
| ONNN | 81,930 | — |
| RMTR | 21,754 | — |
| SIMG | 93,461 | — |
| Total | $43.7M |
Shares reported on the most recent Form 4, priced at the 2026-08-18 close. 3 holdings could not be priced and are 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 |
|---|---|---|---|---|---|---|---|---|
| FIX | SELL | 2026-08-17 | 2026-08-18 | $1859.65 | $4.7M | -11.8% | -8.5% | — |
| FIX | SELL | 2026-05-08 | 2026-05-12 | $1962.73 | $9.8M | -9.7% | -9.1% | -17.4% |
| FIX | SELL | 2026-02-23 | 2026-02-24 | $1434.97 | $12.9M | -12.9% | -7.5% | +28.4% |
| FIX | SELL | 2025-12-01 | 2025-12-03 | $958.88 | $4.2M | +1.9% | +5.6% | +46.4% |
| FIX | SELL | 2025-08-08 | 2025-08-12 | $692.60 | $11.7M | -4.9% | +5.5% | +34.3% |
| FIX | SELL | 2025-05-13 | 2025-05-14 | $470.11 | $5.9M | +4.6% | +6.2% | +54.9% |
| FIX | SELL | 2024-11-08 | 2024-11-12 | $459.73 | $5.0M | +5.7% | +1.0% | +0.1% |
| FIX | SELL | 2024-08-20 | 2024-08-21 | $332.16 | $3.9M | -8.6% | +11.8% | +37.7% |
| FIX | SELL | 2024-02-26 | 2024-02-28 | $278.95 | $4.7M | -0.1% | +7.5% | +14.0% |
| FIX | SELL | 2022-11-11 | 2022-11-15 | $125.37 | $940K | +2.0% | -3.1% | +0.9% |
| FIX | SELL | 2022-08-01 | 2022-08-02 | $104.23 | $3.4M | +3.3% | -3.8% | +17.4% |
| FIX | SELL | 2021-10-29 | 2021-11-02 | $90.97 | $3.8M | +6.5% | +1.7% | -4.2% |
| FIX | SELL | 2021-05-03 | 2021-05-04 | $84.76 | $3.3M | -3.3% | -0.6% | -14.7% |
| FIX | SELL | 2021-03-09 | 2021-03-11 | $73.11 | $1.4M | -4.4% | +6.2% | +14.2% |
| POWI | SELL | 2021-02-11 | 2021-02-12 | $92.00 | $589K | -8.1% | -10.4% | -19.6% |
| FIX | SELL | 2020-08-13 | 2020-08-17 | $53.77 | $2.1M | -7.1% | -4.5% | -7.2% |
| POWI | SELL | 2020-05-27 | 2020-05-29 | $112.00 | $538K | +8.8% | +7.5% | +3.2% |
| FIX | BUY | 2019-09-12 | 2019-09-12 | $40.59 | $41K | +5.3% | +5.1% | +19.1% |
| POWI | SELL | 2019-08-16 | 2019-08-21 | $85.00 | $680K | -3.0% | +3.3% | +2.7% |
| FIX | BUY | 2019-08-14 | 2019-08-15 | $37.47 | $37K | -4.6% | +11.9% | +31.0% |
| FIX | BUY | 2019-07-29 | 2019-07-30 | $41.39 | $103K | -5.8% | -11.1% | +18.7% |
| POWI | SELL | 2019-02-25 | 2019-02-26 | $74.00 | $38K | -5.1% | -6.5% | -9.6% |
| POWI | SELL | 2019-02-12 | 2019-02-13 | $70.00 | $123K | +5.5% | +1.7% | +1.7% |
| FIX | SELL | 2018-07-31 | 2018-07-31 | $54.24 | $3.2M | -1.4% | +1.2% | -7.4% |
| POWI | SELL | 2018-06-13 | 2018-06-14 | $80.00 | $120K | -2.5% | -3.4% | -16.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.