Brian Charles Quirk is VP at MKS INSTRUMENTS INC (MKSI). They have made 8 open-market trades across 1 company since 2014, most recently 2018-05-07.
CIK 0001600515
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 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MKSI | 17,640 | $3.8M |
Shares reported on the most recent Form 4, priced at the 2018-05-08 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MKSI | SELL | 2018-05-07 | 2018-05-08 | $109.40 | $219K | -0.1% | -0.6% | -14.0% |
| MKSI | SELL | 2018-02-05 | 2018-02-06 | $105.10 | $210K | +2.8% | +13.1% | +2.1% |
| MKSI | SELL | 2017-11-06 | 2017-11-07 | $107.90 | $216K | -2.6% | -9.8% | -2.4% |
| MKSI | SELL | 2017-08-08 | 2017-08-09 | $79.30 | $159K | -1.3% | +4.0% | +34.3% |
| MKSI | SELL | 2017-05-10 | 2017-05-11 | $80.00 | $160K | -0.4% | -4.7% | -0.6% |
| MKSI | SELL | 2017-04-03 | 2017-04-04 | $68.75 | $69K | -3.0% | +17.9% | -1.4% |
| MKSI | SELL | 2017-02-01 | 2017-02-02 | $66.60 | $67K | -1.3% | -2.5% | +18.7% |
| MKSI | SELL | 2016-12-01 | 2016-12-05 | $57.40 | $57K | +6.2% | +6.7% | +16.3% |
| MKSI | SELL · 10b5-1 | 2016-10-03 | 2016-10-04 | $49.36 | $49K | -0.3% | +0.1% | +22.8% |
| MKSI | SELL · 10b5-1 | 2016-08-03 | 2016-08-04 | $45.17 | $45K | +1.8% | +5.9% | +7.1% |
| MKSI | SELL · 10b5-1 | 2016-05-16 | 2016-05-17 | $36.25 | $36K | +15.4% | +15.6% | +32.6% |
| MKSI | SELL · 10b5-1 | 2016-03-18 | 2016-03-21 | $36.00 | $36K | +6.0% | +6.3% | +16.6% |
| MKSI | SELL · 10b5-1 | 2016-01-28 | 2016-01-29 | $36.00 | $36K | -6.9% | -6.3% | +3.4% |
| MKSI | SELL · 10b5-1 | 2015-12-16 | 2015-12-17 | $36.03 | $36K | -6.6% | -7.9% | -3.1% |
| MKSI | SELL · 10b5-1 | 2015-01-30 | 2015-02-02 | $36.09 | $38K | -6.6% | -1.0% | -1.0% |
| MKSI | SELL · 10b5-1 | 2015-01-23 | 2015-01-26 | $34.76 | $36K | -6.6% | -1.0% | -1.0% |
| MKSI | SELL · 10b5-1 | 2015-01-16 | 2015-01-20 | $33.10 | $34K | -6.6% | -1.0% | -1.0% |
| MKSI | SELL · 10b5-1 | 2014-12-12 | 2014-12-15 | $35.97 | $37K | -6.6% | -1.0% | -1.0% |
| MKSI | SELL · 10b5-1 | 2014-12-05 | 2014-12-08 | $36.17 | $38K | -6.6% | -1.0% | -1.0% |
| MKSI | SELL · 10b5-1 | 2014-11-21 | 2014-11-24 | $36.30 | $38K | -6.6% | -1.0% | -1.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.