MKS Inc SEC filings MKSI
MKS Inc has 1,001 filings in SEC EDGAR's recent list, going back to Nov 5, 2014. Its latest annual report, Form ARS, was filed on Mar 31, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations, bylaw or fiscal year change, regulation fd disclosure, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| DEFA14A | Additional proxy material | Mar 31, 2026 | — |
| DEF 14A | Proxy statement | Mar 31, 2026 | May 11, 2026 |
| PRE 14A | Preliminary proxy statement | Mar 20, 2026 | May 11, 2026 |
| DEFA14A | Additional proxy material | Apr 1, 2025 | — |
| DEF 14A | Proxy statement | Apr 1, 2025 | May 12, 2025 |
| PRE 14A | Preliminary proxy statement | Mar 21, 2025 | May 12, 2025 |
| DEFA14A | Additional proxy material | Mar 27, 2024 | — |
| DEF 14A | Proxy statement | Mar 27, 2024 | May 7, 2024 |
| DEFA14A | Additional proxy material | Apr 5, 2023 | — |
| DEF 14A | Proxy statement | Apr 5, 2023 | — |
| DEFA14A | Additional proxy material | Mar 31, 2022 | — |
| DEF 14A | Proxy statement | Mar 31, 2022 | May 10, 2022 |
| DEFA14A | Additional proxy material | Mar 26, 2021 | — |
| DEF 14A | Proxy statement | Mar 26, 2021 | May 11, 2021 |
| DEFA14A | Additional proxy material | Apr 8, 2020 | — |
| DEFA14A | Additional proxy material | Mar 27, 2020 | — |
| DEF 14A | Proxy statement | Mar 27, 2020 | May 12, 2020 |
| DEFA14A | Additional proxy material | Apr 30, 2019 | — |
| DEFA14A | Additional proxy material | Mar 28, 2019 | — |
| DEF 14A | Proxy statement | Mar 28, 2019 | May 8, 2019 |
| DEFA14A | Additional proxy material | Mar 28, 2018 | — |
| DEF 14A | Proxy statement | Mar 28, 2018 | May 9, 2018 |
| DEF 14A | Proxy statement | Mar 24, 2017 | May 10, 2017 |
| DEF 14A | Proxy statement | Mar 16, 2016 | May 2, 2016 |
| DEF 14A | Proxy statement | Mar 13, 2015 | May 4, 2015 |
Showing 25 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Industrial Instruments For Measurement, Display, and Control (SIC 3823)
- Listed as
- MKSI (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- MA
- Headquarters
- Andover, MA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1049502
- Former names
- MKS INSTRUMENTS INC (until May 15, 2025)
Other Industrial Instruments For Measurement, Display, and Control companies
- Danaher Corp /DE/ DHR
- Ametek INC/ AME
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- Sensata Technologies Holding plc ST
All 18 Industrial Instruments For Measurement, Display, and Control companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.