| 2013-11-29 | MKS Instruments, Inc. MKSI | VP & GM, ENI and Medical | 547.74 0.0008% | $23.96 | $13,125 | +3.1% | ||
| 2013-05-31 | MKS Instruments, Inc. MKSI | VP & GM, ENI and Medical | 1,040.8 0.0014% | $20.42 | $21,250 | +2.99% | ||
| 2012-11-30 | MKS Instruments, Inc. MKSI | VP & GM, ENI and Medical | 653.06 0.0011% | $20.61 | $13,462 | +13.14% |