Scott D. Sheffield is Director at PIONEER NATURAL RESOURCES CO (PXD). They have made 56 open-market trades across 3 companies since 2007, most recently 2026-06-01.
CIK 0001034316
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 $480K since 2008, against 54 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PXD | 640,605 | $172.7M |
| TBN | 326,961 | $10.2M |
| WMB | 76,302 | $5.4M |
| PSE | 91,058 | — |
| Total | $188.4M |
Shares reported on the most recent Form 4, priced at the 2026-06-03 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 |
|---|---|---|---|---|---|---|---|---|
| TBN | BUY | 2026-04-08 | 2026-04-10 | $36.02 | $252K | -2.2% | -2.0% | -12.6% |
| PXD | SELL | 2024-03-15 | 2024-03-19 | $251.00 | $3.8M | +4.3% | +5.9% | N/A |
| PXD | SELL | 2024-03-04 | 2024-03-06 | $235.25 | $2.4M | +5.2% | +13.9% | N/A |
| PXD | SELL | 2022-03-23 | 2022-03-25 | $254.87 | $11.8M | -3.8% | -8.1% | -11.0% |
| PXD | SELL | 2022-03-03 | 2022-03-03 | $240.12 | $10.7M | -4.6% | +5.9% | +16.4% |
| PXD | SELL | 2021-03-05 | 2021-03-09 | $162.73 | $9.7M | +4.3% | -4.6% | +8.9% |
| PXD | SELL | 2018-05-17 | 2018-05-21 | $211.16 | $4.2M | -8.6% | -12.7% | -17.9% |
| PXD | SELL | 2018-05-10 | 2018-05-14 | $202.46 | $14.6M | -3.9% | -4.0% | -8.9% |
| PXD | SELL | 2018-02-23 | 2018-02-26 | $180.00 | $180K | -6.5% | -6.6% | +6.4% |
| PXD | SELL | 2018-02-12 | 2018-02-14 | $170.93 | $342K | -2.7% | -5.6% | +13.2% |
| PXD | SELL | 2017-12-22 | 2017-12-26 | $172.38 | $862K | +2.5% | +8.3% | +0.8% |
| PXD | SELL | 2017-11-09 | 2017-11-13 | $161.14 | $1.6M | -1.5% | +0.4% | +9.4% |
| PXD | SELL | 2017-02-14 | 2017-02-15 | $197.33 | $592K | -6.1% | -6.7% | -11.7% |
| PXD | SELL | 2016-11-23 | 2016-11-28 | $185.14 | $3.7M | +10.2% | +7.1% | +10.0% |
| PXD | SELL | 2016-08-12 | 2016-08-16 | $176.52 | $466K | -0.1% | -0.6% | -3.3% |
| PXD | SELL | 2016-08-12 | 2016-08-16 | $175.62 | $3.5M | -0.1% | -0.6% | -3.3% |
| PXD | SELL | 2016-04-28 | 2016-05-02 | $168.97 | $9.6M | +2.1% | -2.5% | -3.9% |
| PXD | SELL | 2015-12-01 | 2015-12-03 | $149.09 | $1.5M | -8.8% | -0.7% | +4.8% |
| PXD | SELL | 2015-09-15 | 2015-09-17 | $116.92 | $1.8M | -8.8% | -0.7% | -0.7% |
| PXD | SELL | 2015-06-09 | 2015-06-11 | $150.14 | $3.0M | -8.8% | -0.7% | -0.7% |
| PXD | SELL | 2014-06-09 | 2014-06-11 | $220.52 | $4.4M | -8.8% | -0.7% | -0.7% |
| PXD | SELL | 2014-05-21 | 2014-05-22 | $204.41 | $4.1M | -8.8% | -0.7% | -0.7% |
| PXD | SELL | 2014-03-18 | 2014-03-20 | $188.55 | $9.8M | -8.8% | -0.7% | -0.7% |
| PXD | SELL | 2013-09-05 | 2013-09-09 | $183.13 | $1.8M | -8.8% | -0.7% | -0.7% |
| PXD | SELL | 2013-06-17 | 2013-06-19 | $153.76 | $6.8M | -8.8% | -0.7% | -0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.