| 2015-12-16 | Sale | MKS Instruments, Inc. MKSI | director | 1,500 0.0028% | $36.09 | $54,135 | +15.04% | |
| 2014-11-03 | Sale | MKS Instruments, Inc. MKSI | director | 556 0.0011% | $36.55 | $20,322 | -0.58% | |
| 2014-03-04 | Sale | MKS Instruments, Inc. MKSI | director | 10,222 0.0189% | $30.25 | $309,216 | +8.54% | |
| 2011-11-11 | Sale | MKS Instruments, Inc. MKSI | director | 6,222 0.0116% | $27.36 | $170,236 | -1.42% | |
| 2011-02-17 | Sale | MKS Instruments, Inc. MKSI | director | 3,334 0.0065% | $30.75 | $102,521 | -12.77% | |
| 2011-02-16 | Sale | MKS Instruments, Inc. MKSI | director | 4,000 0.0078% | $30.13 | $120,520 | -11.53% | |
| 2010-12-15 | Sale | MKS Instruments, Inc. MKSI | director | 3,330 0.0065% | $22.17 | $73,826 | +18.07% | |
| 2010-09-15 | Sale | MKS Instruments, Inc. MKSI | director | 1,112 0.0022% | $18.41 | $20,472 | +36.92% |