William G. Parrett is Director at Blackstone Inc. (BX). They have made 20 open-market trades across 6 companies since 2007, most recently 2026-04-01.
CIK 0001418280
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.
10 open-market purchases totalling $665K since 2007, against 10 sales. Across 7 scored buys the stock is down 0.1% at ninety days, and 0.5 points behind the S&P over the same stretch.
7 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 0% | 57% | 71% |
| Avg Move | -11.6% | -1.3% | -0.1% |
| Alpha | -5.8% | -0.3% | -0.5% |
| Scored | 7 | 7 | 7 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ORCL | SELL | 2025-09-12 | 2025-09-16 | $306.00 | $3.5M | -7.9% | +1.7% | -39.9% |
| BX | SELL | 2023-09-08 | 2023-09-11 | $112.47 | $871K | -2.0% | -5.4% | -0.4% |
| TWKS | SELL | 2021-09-17 | 2021-09-21 | $19.85 | $2.6M | -6.4% | -2.5% | -18.3% |
| TMO | SELL | 2018-02-23 | 2018-02-27 | $211.43 | $211K | +3.1% | -2.3% | -1.2% |
| TMO | SELL | 2018-02-15 | 2018-02-20 | $209.80 | $210K | -0.9% | -0.5% | +4.0% |
| KODK | SELL | 2016-08-12 | 2016-08-16 | $15.96 | $315K | -2.4% | -10.0% | -2.9% |
| KODK | SELL | 2016-08-12 | 2016-08-16 | $15.96 | $316K | -2.4% | -10.0% | -2.9% |
| TMO | BUY | 2015-12-11 | 2015-12-15 | $134.16 | $134K | -4.1% | -2.6% | +0.2% |
| BX | BUY | 2015-12-11 | 2015-12-15 | $28.72 | $115K | -14.6% | -10.4% | -4.6% |
| TMO | SELL | 2014-02-06 | 2014-02-07 | $114.33 | $2.1M | -4.1% | -0.5% | -0.5% |
| BX | SELL | 2013-11-14 | 2013-11-18 | $27.38 | $274K | -14.6% | +1.1% | +1.1% |
| EK | BUY | 2011-02-11 | 2011-02-15 | $3.63 | $15K | N/A | N/A | N/A |
| EK | SELL | 2011-02-11 | 2011-02-15 | $3.51 | $7K | N/A | N/A | N/A |
| BX | BUY | 2008-12-02 | 2008-12-03 | $5.83 | $29K | -14.6% | +1.1% | +1.1% |
| BX | BUY | 2008-11-11 | 2008-11-12 | $7.20 | $72K | -14.6% | +1.1% | +1.1% |
| TMO | BUY | 2008-10-27 | 2008-10-28 | $37.35 | $75K | -4.1% | -0.5% | -0.5% |
| BX | BUY | 2008-09-18 | 2008-09-18 | $15.17 | $46K | -14.6% | +1.1% | +1.1% |
| EK | BUY | 2008-05-05 | 2008-07-18 | $16.80 | $17K | N/A | N/A | N/A |
| BX | BUY | 2008-03-17 | 2008-03-19 | $14.19 | $71K | -14.6% | +1.1% | +1.1% |
| EK | BUY | 2007-11-16 | 2007-11-20 | $23.26 | $23K | N/A | N/A | N/A |
| BX | BUY | 2007-11-16 | 2007-11-19 | $23.04 | $69K | -14.6% | +1.1% | +1.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| Total |
| $15.2M |
Shares reported on the most recent Form 4, priced at the 2026-04-03 close. 1 holding could not be priced and is excluded from the total.