# MKS INC — DEF 14A

MKS INC of ANDOVER, MA filed a DEF 14A with the SEC on 2001-04-10. Industry: Industrial Instruments For Measurement, Display, and Control.

## Filing

- Filed: 2001-04-10
- Form: DEF 14A
- Accession: 0000950135-01-500549
- Registrant: MKS INC
- CIK: 0001049502
- Industry (SIC): Industrial Instruments For Measurement, Display, and Control (3823)
- State of incorporation: MA
- Location: ANDOVER, MA

## Documents (1)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEF 14A | MKS INSTRUMENTS, INC |

## Filing timeline for this registrant (60)

_Showing 12 of 60 filings._

| Filed | Form |
| --- | --- |
| [2026-03-31](https://search.stillhousedata.com/proxy/0001193125-26-133389) | DEFA14A |
| [2026-03-31](https://search.stillhousedata.com/proxy/0001193125-26-133378) | DEF 14A |
| [2026-03-20](https://search.stillhousedata.com/proxy/0001193125-26-117622) | PRE 14A |
| [2025-04-01](https://search.stillhousedata.com/proxy/0001193125-25-069829) | DEFA14A |
| [2025-04-01](https://search.stillhousedata.com/proxy/0001193125-25-069811) | DEF 14A |
| [2025-03-21](https://search.stillhousedata.com/proxy/0001193125-25-060220) | PRE 14A |
| [2024-03-27](https://search.stillhousedata.com/proxy/0001193125-24-078879) | DEFA14A |
| [2024-03-27](https://search.stillhousedata.com/proxy/0001193125-24-078875) | DEF 14A |
| [2023-04-05](https://search.stillhousedata.com/proxy/0001193125-23-091660) | DEFA14A |
| [2023-04-05](https://search.stillhousedata.com/proxy/0001193125-23-091658) | DEF 14A |
| [2022-03-31](https://search.stillhousedata.com/proxy/0001193125-22-091844) | DEFA14A |
| [2022-03-31](https://search.stillhousedata.com/proxy/0001193125-22-091831) | DEF 14A |

## More

- [CIK 1049502 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1049502&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000950135-01-500549.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.