WEIGNER RONALD 4
4 · MKS INSTRUMENTS INC · Filed Mar 18, 2009
Insider Transaction Report
Form 4
WEIGNER RONALD
V.P., C.F.O & Treasurer
Transactions
- Award
Restricted Stock Unit
2009-03-16+7,000→ 15,804 total→ Common Stock (7,000 underlying)
Footnotes (2)
- [F1]Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.
- [F2]One half of RSUs shall vest in equal annual installments over three years, and the other half shall be subject to the achievement of performance criteria, and thereafter shall vest in equal annual installments over three years.