| Filed On | Filing |
|---|---|
| 31 Mar 2026 | DEFA14A |
| 01 Apr 2025 | DEFA14A |
| 27 Mar 2024 | DEFA14A |
| 05 Apr 2023 | DEFA14A |
| 31 Mar 2022 | NOTICE AND ACCESS |
| 26 Mar 2021 | DEFA14A |
| 08 Apr 2020 | DEFA14A |
| 27 Mar 2020 | DEFA14A |
| 30 Apr 2019 | DEFA14A |
| 28 Mar 2019 | DEFA14A |
| 28 Mar 2018 | DEFA14A |
| 27 Apr 2009 | MKS INSTRUMENTS, INC. |
| 15 Apr 2005 | MKS INSTRUMENTS, INC. |
| 07 Jan 2002 | MKS INSTRUMENTS, INC. |
| 31 Oct 2001 | MKS INSTRUMENTS, INC. |
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