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MKS INC (MKSI)

SEC filings, insider trading & institutional ownership from EDGAR.

NasdaqIndustrialsElectrical Equipment

MKS Instruments, Inc. was founded in 1961 as a Massachusetts corporation. It provides foundational technology solutions to semiconductor manufacturing, electronics and packaging, and specialty industrial applications. The company applies its science and engineering capabilities to create instruments, subsystems, systems, process control solutions and specialty chemicals technology that improve process performance and productivity. It describes two product strategies: Surround the Wafer, which covers products, services, integration, training, calibration and repair for semiconductor customers, and Surround the Workpiece, which covers laser-based guidance and control for manufacturing processes. Optimize the Interconnect, introduced with the Atotech Acquisition, combines laser drilling and chemistry solutions for printed circuit board and package substrate manufacturing.

MKS is organized into three divisions that are also its reportable segments. The Vacuum Solutions Division offers pressure and vacuum control, materials delivery (flow and valve technologies), power solutions (microwave and radio frequency power delivery, matching networks, metrology and fiber optic sensors), and plasma and reactive gas products. The Photonics Solutions Division offers continuous wave, nanosecond and ultrafast lasers, photonics products (precision motion control, optical tables, vibration isolation, optics and laser measurement products), and laser-based systems for PCB manufacturing. The Materials Solutions Division provides chemistry, equipment and services for surface modification, electroless and electrolytic plating and surface finishing, including coatings and paint support processes. Global Service covers installation, training, on-site maintenance, repair and calibration across the divisions, with product warranties typically of one to three years.

The company serves three end markets. Semiconductor was about 42% of 2024 net revenues, and its products are used in deposition, etching, cleaning, lithography, metrology and inspection. MKS says it addresses over 85% of the wafer fabrication equipment market. Electronics and packaging was about 26%, covering PCBs, package substrates, wafer level packaging and display manufacturing. Specialty industrial was about 32%, spanning industrial applications, life and health sciences, and research and defense. MKS sells to thousands of customers, including semiconductor capital equipment and device manufacturers and PCB and package substrate manufacturers. The top ten customers made up 32% of 2024 net revenues, and none exceeded 10%. International sales were about 78% of 2024 net revenues, with significant sales in China, South Korea, Japan, Taiwan and Singapore. Sales go through a global direct sales organization, independent distributors and representatives, websites and catalogs.

MKS has manufacturing facilities in Austria, Brazil, Canada, China, Czech Republic, France, Germany, India, Israel, Italy, Japan, Malaysia, Mexico, Romania, Singapore, Slovenia, South Korea, Taiwan and the United States. It also relies on subcontracted operations in Mexico and contract manufacturers in Asia. Vacuum and photonics manufacturing centers on assembly and testing, while the materials division mixes chemicals and builds plating equipment. The company buys electronic, optical, mechanical and electrical components and chemical inputs, with some sole or limited source arrangements. R&D spending was $271 million in 2024, and the materials division is supported by 15 global technology centers. The market is cyclical and highly competitive. Named competitors include Advanced Energy, Inficon, VAT, Trumpf, IPG Photonics, Coherent, Element Solutions and DuPont.

AI-summarized from Item 1 (Business) of the company’s most recent 10-K filing.

RevenueFY2025
$3.93B
▲ 9.6%YoY
Net incomeFY2025
$295M
▲ 55.3%YoY
Diluted EPSFY2025
$4.37
▲ 55.5%YoY
Gross margin
46.7%
▼ 90 bpsYoY
Insider net6 mo
−72.7K
shares18 sells0 buys
Institutions
56
$22.75B held

Financials

As reported to the SEC via XBRL, no adjustments

All financials →
Revenue & net income
-$2B$2B$4B
FY2022FY2023FY2024FY2025
RevenueNet income
FY2025 highlightsfrom 10-K
Gross profit$1.84B
Operating income$528M
Diluted EPS$4.37
Gross margin46.7%
Net margin7.5%

Latest filings

10-K, 10-Q, 8-K, Form 4 & 13D/G. Sourced directly from SEC EDGAR

All filings →
FormFiledAccession
10-QNov 5, 2026EDGAR
8-KNov 4, 2026EDGAR
4Lee John Tseng-ChungNov 3, 2026EDGAR
8-KOct 19, 2026EDGAR
SC 13G/AamendedJPMORGAN CHASE & COSep 3, 2026EDGAR
4Mora ElizabethSep 2, 2026EDGAR
4Lee John Tseng-ChungAug 17, 2026EDGAR
8-KAug 6, 2026EDGAR

Insider trading

From Form 4 filings

All →
InsiderDateType
Lee John Tseng-ChungOct 30, 2026Tax withholding
Lee John Tseng-ChungOct 30, 2026Option exercise
Mora ElizabethSep 1, 2026Sell
Lee John Tseng-ChungAug 14, 2026Sell
Williams John EdwardAug 3, 2026Sell

Top holders

13F & 13D/G • latest quarter

All →
HolderStakeFiledValue
BlackRock, Inc.10.2%Aug 7, 2026$3.08B
Invesco Ltd.6.9%Aug 14, 2026$2.07B
Vanguard Portfolio Management5.5%Aug 13, 2026$1.65B
JPMORGAN CHASE & CO5.0%Aug 12, 2026$1.4B
Vanguard Capital Management4.5%Aug 13, 2026$1.36B

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Data as of Nov 9, 2026Source: SEC EDGAR.