| 2009-03-02 | Sale | MKS Instruments, Inc. MKSI | V.P., C.F.O & Treasurer | 2,006 0.0041% | $11.89 | $23,851 | +38.77% | |
| 2008-06-05 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 1,390 0.0027% | $24.15 | $33,569 | -36.87% | |
| 2008-05-09 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 3,982 0.008% | $24.09 | $95,926 | -32.95% | |
| 2007-12-04 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 1,374 0.0027% | $17.80 | $24,457 | +17.24% | |
| 2007-06-14 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 120,000 0.211% | $27.75 | $3.33M | -25.36% | |
| 2007-06-08 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 1,204 0.0021% | $26.60 | $32,026 | -23.67% | |
| 2006-12-13 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 1,252 0.0023% | $20.93 | $26,204 | +10.26% | |
| 2006-11-01 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 27,168 0.0245% | $10.26 | $278,608 | +11.87% | |
| 2006-10-25 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 5,540 0.0049% | $10.51 | $58,198 | +6.43% | |
| 2006-10-18 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 5,540 0.0051% | $10.95 | $60,635 | +6.39% | |
| 2006-10-11 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 5,540 0.0049% | $10.26 | $56,840 | +9.27% | |
| 2006-10-04 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 5,540 0.0048% | $9.82 | $54,403 | +13.42% | |
| 2006-10-02 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 13,160 0.02% | $17.05 | $224,418 | +13.7% | |
| 2006-09-20 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 5,540 0.0049% | $10.21 | $56,536 | +10.11% | |
| 2006-09-14 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 6,000 0.0054% | $10.01 | $60,030 | +14.38% | |
| 2006-09-13 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 5,540 0.005% | $10.17 | $56,342 | +12.92% | |
| 2006-09-06 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 5,540 0.005% | $10.21 | $56,536 | +14.09% | |
| 2006-08-23 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 1,052 0.001% | $10.32 | $10,857 | +13.31% | |
| 2006-08-16 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 1,320 0.0011% | $10.11 | $13,345 | +9.27% | |
| 2006-08-09 | Sale | MKS Instruments, Inc. MKSI | V.P. & Chief Financial Officer | 1,320 0.0012% | $9.81 | $12,956 | +18.15% |