William R. Klesse is Director at VALERO ENERGY CORP/TX (VLO). They have made 38 open-market trades across 2 companies since 2007, most recently 2026-05-04.
CIK 0001019718
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.
16 open-market purchases totalling $7.0M since 2014, against 22 sales. Across 16 scored buys the stock is up 2.1% at ninety days, and 1.9 points behind the S&P over the same stretch.
16 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| VLO | 901,761 | $401.0M |
| OXY | 222,149 | $13.9M |
| VLP | 100,000 | $4.2M |
| VLI | 38,055 | — |
| Total | $419.1M |
Shares reported on the most recent Form 4, priced at the 2026-05-06 close. 1 holding could not be priced and is excluded from the total.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 44% | 63% | 56% |
| Avg Move | -2.9% | +0.7% | +2.1% |
| Alpha | -2.4% | -1.9% | -1.9% |
| Scored | 16 | 16 | 16 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| OXY | BUY | 2025-12-16 | 2025-12-17 | $38.98 | $390K | +2.3% | +5.3% | +42.4% |
| OXY | BUY | 2020-08-25 | 2020-08-26 | $13.43 | $134K | -15.1% | -21.5% | +28.9% |
| OXY | BUY | 2020-03-13 | 2020-03-16 | $11.81 | $236K | +3.6% | +9.9% | +53.9% |
| OXY | BUY | 2019-12-06 | 2019-12-09 | $38.82 | $388K | +3.2% | +19.9% | -66.6% |
| OXY | BUY | 2019-11-19 | 2019-11-20 | $38.09 | $457K | -1.2% | +1.3% | +7.9% |
| OXY | BUY | 2019-11-08 | 2019-11-12 | $39.31 | $472K | +3.5% | -0.0% | +5.9% |
| OXY | BUY | 2019-09-27 | 2019-09-30 | $45.54 | $228K | -8.1% | -7.4% | -8.9% |
| OXY | BUY | 2019-08-12 | 2019-08-13 | $44.96 | $225K | -3.2% | +3.7% | -11.2% |
| OXY | BUY | 2019-06-10 | 2019-06-11 | $48.22 | $482K | +3.9% | +3.5% | -7.7% |
| OXY | BUY | 2018-08-13 | 2018-08-14 | $78.55 | $393K | +0.2% | -3.2% | -8.8% |
| OXY | BUY | 2017-08-09 | 2017-08-10 | $61.58 | $616K | -3.5% | -1.4% | +11.2% |
| OXY | BUY | 2016-12-23 | 2016-12-27 | $72.15 | $722K | -2.4% | -5.1% | -13.0% |
| OXY | BUY | 2016-11-14 | 2016-11-15 | $64.89 | $649K | +0.2% | +4.4% | -1.3% |
| OXY | BUY | 2015-08-05 | 2015-08-06 | $69.48 | $695K | -10.0% | +0.5% | +0.5% |
| VLO | SELL | 2014-11-13 | 2014-11-17 | $49.94 | $1.9M | -7.6% | -0.6% | -0.6% |
| VLO | SELL | 2014-11-12 | 2014-11-13 | $51.33 | $1.0M | -7.6% | -0.6% | -0.6% |
| VLO | SELL | 2014-08-15 | 2014-08-19 | $53.22 | $3.1M | -7.6% | -0.6% | -0.6% |
| OXY | BUY | 2014-05-20 | 2014-05-21 | $95.50 | $478K | -10.0% | +0.5% | +0.5% |
| VLO | SELL | 2014-05-08 | 2014-05-09 | $56.80 | $2.6M | -7.6% | -0.6% | -0.6% |
| OXY | BUY | 2014-03-25 | 2014-03-26 | $94.70 | $474K | -10.0% | +0.5% | +0.5% |
| VLO | SELL | 2014-03-19 | 2014-03-20 | $54.57 | $2.8M | -7.6% | -0.6% | -0.6% |
| VLO | SELL | 2014-03-17 | 2014-03-19 | $54.69 | $4.4M | -7.6% | -0.6% | -0.6% |
| VLO | SELL | 2014-03-06 | 2014-03-10 | $52.72 | $7.1M | -7.6% | -0.6% | -0.6% |
| VLO | SELL | 2013-03-28 | 2013-04-01 | $45.49 | $2.3M | -7.6% | -0.6% | -0.6% |
| VLO | SELL | 2013-03-04 | 2013-03-05 | $48.29 | $2.2M | -7.6% | -0.6% | -0.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.