Dennis L. Werth is VP at MKS INSTRUMENTS INC (MKSI). They have made 5 open-market trades across 2 companies since 2014, most recently 2018-04-02.
CIK 0001550572
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.
0 open-market purchases, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MKSI | SELL | 2017-12-15 | 2017-12-18 | $97.90 | $198K | -4.2% | +4.8% | +25.0% |
| MKSI | SELL | 2017-12-14 | 2017-12-18 | $96.50 | $507K | -4.2% | +4.8% | +25.0% |
| MKSI | SELL | 2017-12-14 | 2017-12-18 | $95.62 | $155K | -4.2% | +4.8% | +25.0% |
| MKSI | SELL | 2016-11-17 | 2016-11-21 | $56.41 | $263K | -2.9% | +4.4% | +18.9% |
| NEWP | SELL | 2015-02-17 | 2015-02-17 | $20.11 | $439K | +0.5% | -3.8% | -3.8% |
| NEWP | SELL · 10b5-1 | 2015-02-10 | 2015-02-12 | $20.07 | $100K | +0.5% | -3.8% | -3.8% |
| NEWP | SELL · 10b5-1 | 2014-10-29 | 2014-10-31 | $18.90 | $95K | +0.5% | -3.8% | -3.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.