MKS Inc. (MKSI)
Nasdaq: MKSI · Industrial Instruments For Measurement, Display, and Control · Andover, MA · filing with the SEC since 1997
Grade5.4
◀ Past 5.8● Present 5.2▶ Future 5.1
Who runs MKS Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Lee John Tseng-Chung
President & CEO. First filing Oct 2007, latest Nov 3, 2026, 10 filings in all.
Officers reporting now
10
of 16 people with a filing in the last fifteen months
Directors reporting now
6
31 people on the record since 2006
Officerssales are open-market, Nov 3, 2025 to Nov 3, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Lee John Tseng-Chung | President & CEO | Oct 2007 | Nov 3, 2026 | 6 · $13.9M |
| Donlan Renee Martel | EVP, GC & CCO | Jun 2026 | Aug 18, 2026 | none |
| Williams John Edward | EVP & GM, PSD | May 2024 | Aug 4, 2026 | 2 · $700,000 |
| Schreiner James Alan | EVP & COO | Jan 2020 | Jun 16, 2026 | 5 · $2.5M |
| Mccarthy Michelle M | SVP & Chief Accounting Officer | Mar 2024 | Jun 8, 2026 | 3 · $1.1M |
| Henry David Philip | EVP, Global Str Mktg & GM, MSD | Feb 2021 | Jun 2, 2026 | 3 · $3.2M |
| Colella Gerard G | CEO, Director | Feb 2006 | May 28, 2026 | 9 · $11.7M |
| Mayampurath Ramakumar | EVP & CFO | Oct 2024 | May 26, 2026 | 1 · $2.8M |
| Burke Kathleen Flaherty | EVP, GC & Secretary | May 2019 | May 12, 2026 | 2 · $2.5M |
| Taranto Eric Robert | EVP & GM, VSD | Feb 2021 | May 12, 2026 | 3 · $2.3M |
Directorssales are open-market, Nov 3, 2025 to Nov 3, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Mora Elizabeth | director | May 2012 | Sep 2, 2026 | 4 · $300,000 |
| Donahue Joseph B | director | May 2020 | May 28, 2026 | 1 · $700,000 |
| Cannone Peter III | director | May 2021 | May 19, 2026 | 2 · $700,000 |
| Moloney Jacqueline F | director | May 2016 | May 15, 2026 | 4 · $1.0M |
| Batra Raj | director | Oct 2018 | May 12, 2026 | none |
| Jabre Wissam G | director | Nov 2024 | May 12, 2026 | none |
Earlier names on the record31, newest filing first
Warner Michelle M · director · last filing May 2024Bagshaw Seth H · officer · last filing Feb 2024Gitin Mark Milton · officer · last filing Feb 2024Cap IV General Partner, L.P. · 10% owner · last filing May 2023Cap IV, L.L.C. · 10% owner · last filing May 2023Carlyle Asia Partners IV, L.P. · 10% owner · last filing May 2023Carlyle Group Inc. · 10% owner · last filing May 2023Carlyle Holdings II Gp L.L.C. · 10% owner · last filing May 2023Carlyle Holdings II L.L.C. · 10% owner · last filing May 2023Carlyle Partners Vi Cayman Holdings, L.P. · 10% owner · last filing May 2023Cep IV Managing Gp Holdings, Ltd. · 10% owner · last filing May 2023Cep IV Managing Gp, L.P. · 10% owner · last filing May 2023Cep IV Participations, S.A R.L. Sicar · 10% owner · last filing May 2023Cg Subsidiary Holdings L.L.C. · 10% owner · last filing May 2023Gamma Holding Co Ltd · 10% owner · last filing May 2023Tc Group Cayman Investment Holdings Sub L.P. · 10% owner · last filing May 2023Tc Group Cayman Investment Holdings, L.P. · 10% owner · last filing May 2023Tc Group Vi Cayman, L.L.C. · 10% owner · last filing May 2023Tc Group Vi Cayman, L.P. · 10% owner · last filing May 2023Wild Geoffrey · director · last filing Aug 2022Henry Janice K · director · last filing May 2020Beecher Gregory R · director · last filing May 2020Bertucci John R · officer · last filing May 2019Chute Richard S · director · last filing May 2019Hess Rick D · director · last filing May 2019Abrams John R · officer · last filing Feb 2019Hanley Peter · director · last filing Aug 2018Quirk Brian Charles · officer · last filing May 2018Werth Dennis L · officer · last filing Apr 2018Phillippy Robert J · director · last filing Feb 2018Anderson Robert R · director · last filing May 2017
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.