| Date | Event |
| 6-Nov-09 | MKS INSTRUMENTS INC Files SEC form 10-Q, Quarterly Report |
| 22-Oct-09 | MKS Instruments Earnings Call scheduled for 8:30 am ET today |
| 22-Oct-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhib |
| 5-Oct-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhib |
| 11-Sep-09 | Price hit new 52-week high ($20.60) |
| 7-Aug-09 | MKS INSTRUMENTS INC Files SEC form 10-Q, Quarterly Report |
| 22-Jul-09 | MKS Instruments Earnings Call scheduled for 8:30 am ET today |
| 22-Jul-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhib |
| 7-May-09 | MKS INSTRUMENTS INC Files SEC form 10-Q, Quarterly Report |
| 6-May-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Entry into a Material Definitive Agreement, Financial Statements and Exhibits |
| 22-Apr-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhib |
| 3-Apr-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Results of Operations and Financial Condition, Costs Associated with Exit or |
| 23-Mar-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Entry into a Material Definitive Agreement, Financial Statements and Exhibits |
| 9-Mar-09 | Price hit new 52-week low ($11.38) |
| 3-Mar-09 | Price hit new 52-week low ($11.62) |
| 27-Feb-09 | MKS INSTRUMENTS INC Files SEC form 10-K, Annual Report |
| 4-Feb-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhib |
| 29-Jan-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Costs Associated with Exit or Disposal Activities |
| 20-Jan-09 | MKS INSTRUMENTS INC Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhibits |
| 23-Dec-08 | MKS INSTRUMENTS INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhib |
| 7-Nov-08 | MKS INSTRUMENTS INC Files SEC form 10-Q, Quarterly Report |