David J. Tudor is Director at Western Midstream Partners, LP (WES). They have made 11 open-market trades across 3 companies since 2008, most recently 2026-08-28.
CIK 0001432308
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.
4 open-market purchases totalling $120K since 2008, against 7 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| WES | 31,241 | $1.4M |
| NBR | 5,264 | $412K |
| WGP | 8,463 | $277K |
| Total | $2.1M |
Shares reported on the most recent Form 4, priced at the 2026-08-28 close.
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 |
|---|---|---|---|---|---|---|---|---|
| NBR | SELL | 2026-08-28 | 2026-08-28 | $92.30 | $295K | -2.1% | -14.3% | — |
| WES | SELL | 2019-09-20 | 2019-09-23 | $27.00 | $135K | -3.4% | -11.9% | -20.1% |
| WES | SELL | 2016-09-13 | 2016-09-15 | $49.12 | $196K | +9.2% | +18.0% | +12.7% |
| WES | BUY | 2015-01-14 | 2015-01-15 | $63.16 | $25K | -19.1% | +1.1% | +1.1% |
| WGP | BUY | 2015-01-14 | 2015-01-15 | $51.95 | $26K | -19.1% | +1.1% | +1.1% |
| WES | SELL | 2014-03-06 | 2014-03-07 | $64.50 | $161K | -19.1% | +1.1% | +1.1% |
| WGP | BUY | 2012-12-06 | 2012-12-10 | $22.00 | $44K | -19.1% | +1.1% | +1.1% |
| WES | SELL | 2012-11-21 | 2012-11-23 | $48.94 | $245K | -19.1% | +1.1% | +1.1% |
| WES | SELL | 2012-11-13 | 2012-11-14 | $49.23 | $148K | -19.1% | +1.1% | +1.1% |
| WES | SELL | 2009-07-23 | 2009-07-24 | $16.89 | $25K | -19.1% | +1.1% | +1.1% |
| WES | BUY | 2008-05-14 | 2008-05-14 | $16.50 | $25K | -19.1% | +1.1% | +1.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.