MKS Inc.

MKS Inc.

MKSI·NASDAQ

$335.15

+1.1%
TechnologyHardware, Equipment & Parts

MKS Inc. provides instruments, systems, subsystems, and process control solutions that measure, monitor, deliver, analyze, power, and control critical parameters of manufacturing processes worldwide. Its Vacuum & Analysis segment offers pressure and vacuum control solutions, including direct and indirect pressure measurement; materials delivery solutions comprising flow and valve technologies, as well as integrated pressure measurement and control subsystems, which provide customers with precise control capabilities; power solutions products, such as microwave, power delivery systems, radio frequency matching networks, and metrology products used in providing energy to etching, stripping, and deposition processes; and plasma and reactive gas products. Its Light & Motion segment offers laser products, such as continuous wave and pulsed nanosecond, diode and diode-pumped solid-state, and fiber laser technologies; and photonics products comprising motion control, optical tables and vibration isolation systems, photonic instruments, optics and optical assemblies, opto-mechanical components, temperature sensing products for wafer fabrication systems, and laser and LED measurement products, including laser power and energy meters, laser beam profilers, and optical and photonic subsystems. Its Equipment & Solutions segment provides laser-based systems for printed circuit board (PCB) manufacturing, including flexible interconnect PCB processing systems and high-density interconnect solutions for rigid PCB manufacturing and substrate processing, and multi-layer ceramic capacitor test systems. It serves semiconductor, industrial technologies, life and health sciences, research, and defense markets. It sells its products and services through its direct sales organization, independent distributors, and sales representatives, as well as through its websites and product catalogs. The company was incorporated in 1961 and is headquartered in Andover, Massachusetts.

At a Glance

Live Snapshot
Market Cap$22.64B
EPS4.3900
P/E Ratio76.34
Earnings Date08/05/2026
6.92%
Return on Invested Capital
10%
3Y+56.0%
5Y-34.0%
10Y+7.0%
10.85%
Return on Equity
33%
3Y+46.0%
5Y-27.0%
10Y+29.0%
3.35%
Return on Assets
52%
3Y+16.0%
5Y-63.0%
10Y-29.0%
MKS Inc.

MKS Inc. Management Team

MKSI · NASDAQ
MR

Mr. Ramakumar Mayampurath

EVice President & Chief Financial Officer

Compensation

$1,195,507

Born 1964(Age 62)
male
MR

Mr. Ramakumar Mayampurath

EVice President, Chief Financial Officer & Treasurer

Compensation

$1,195,507

Born 1964(Age 62)
male
MD

Mr. David Philip Henry

EVice President, Global Strategic Marketing & GM of Materials Solutions Division

Compensation

$581,105

Born 1972(Age 54)
male
MS

Ms. Sally Ann Bouley

Executive Vice President & Chief Human Resources Officer

female
MM

Ms. Madhuri A. Andrews

Executive Vice President & Chief Information Officer

Born 1967(Age 59)
female
MJ

Mr. James Alan Schreiner

Executive Vice President & Chief Operating Officer

Compensation

$891,335

Born 1962(Age 64)
male
MJ

Mr. James Alan Schreiner

Executive Vice President & Chief Operating Officer of Materials Solutions Division

Compensation

$891,335

Born 1962(Age 64)
male
ME

Mr. Eric Robert Taranto

Executive Vice President & GM of Vacuum Solutions Division

Born 1968(Age 58)
male
MD

Mr. David Philip Henry

Executive Vice President of Operations & Corporate Marketing

Compensation

$581,105

Born 1972(Age 54)
male
MK

Ms. Kathleen F. Burke Esq.

Executive Vice President, General Counsel & Secretary

Compensation

$653,543

Born 1965(Age 61)
female
DJ

Dr. John T. C. Lee Ph.D.

President, Chief Executive Officer & Director

Compensation

$1,371,573

Born 1963(Age 63)
MM

Ms. Michelle M. McCarthy

Vice President & Chief Accounting Officer

Born 1981(Age 45)
female
mksi

MKS Inc. Insider Positioning

MKSI · NASDAQ

During the last 12 months, insiders have sold $22.99M worth of MKSI shares, with no buying activity reported.

3 Months

Bought

0

0.00

Sold

46.0K

14.14M

Net Activity

-14.1M

-$14.14M

3-6 Months

Bought

0

0.00

Sold

29.8K

7.55M

Net Activity

-7.6M

-$7.55M

6-9 Months

Bought

0

0.00

Sold

7.1K

936.80K

Net Activity

-937K

-$937K

9-12 Months

Bought

0

0.00

Sold

3.6K

365.62K

Net Activity

-366K

-$366K

Top Buyers

No buying activity

Top Sellers

1
CGG

Colella Gerald G

Director

20.5K shares3 transactions

$5.22M

2
HDP

Henry David Philip

Officer: Evp, Global Str Mktg & Gm, Msd

17.5K shares5 transactions

$4.10M

3
LJT

Lee John Tseng-Chung

Director, Officer: President & Ceo

10.0K shares1 transactions

$3.15M

4
MR

Mayampurath Ramakumar

Officer: Evp & Cfo

8.8K shares1 transactions

$2.78M

5
TER

Taranto Eric Robert

Officer: Evp & Gm, Vsd

8.9K shares3 transactions

$2.28M

Insider Activity Analysis

Net Insider Sentiment

Bearish

Strong bearish signal with $22.99M net selling. Heavy insider selling may indicate concerns about valuation or near-term prospects.

Buy/Sell Ratio

0.00:1

Very poor ratio. Heavy selling with minimal buying suggests insiders may be concerned about valuation or outlook.

Recent Trend (3 Months)

$14.14M

Heavy recent selling activity. Recent insider sales notably exceed purchases—may warrant investigation into company developments.

Insider Participation

High Selling

5 insider sellers vs. 0 buyers. Widespread selling across multiple insiders may signal concerns.

Insider Activity Insight

Multiple red flags: Heavy selling, numerous sellers, and continued recent selling create a concerning pattern. Investigate fundamental drivers and consider whether company guidance or industry conditions have deteriorated.

SEC Filings

MKSI - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
DEF 14A

DEF 14A 2026

N/A

March 31, 2026
May 11, 2026
2026
DEF 14A

DEF 14A 2025

N/A

April 01, 2025
May 12, 2025
2025
DEF 14A

DEF 14A 2024

N/A

March 27, 2024
May 07, 2024
2024
DEF 14A

DEF 14A

N/A

April 05, 2023
April 05, 2023
 
DEF 14A

DEF 14A 2022

N/A

March 31, 2022
May 10, 2022
2022
DEF 14A

DEF 14A 2021

N/A

March 26, 2021
May 11, 2021
2021
DEF 14A

DEF 14A 2020

N/A

March 27, 2020
May 12, 2020
2020
DEF 14A

DEF 14A 2019

N/A

March 28, 2019
May 08, 2019
2019
DEF 14A

DEF 14A 2018

N/A

March 28, 2018
May 09, 2018
2018
DEF 14A

DEF 14A 2017

N/A

March 24, 2017
May 10, 2017
2017
Showing 1 to 10 of 27 filings