MKSI insider trading
TechnologyMKS INC — scored insider trade history from SEC Form 4 filings, parsed and contextualised by FilingIQ.
About MKS INC
MKS Inc. provides foundational technology solutions to semiconductor manufacturing, electronics and packaging, and specialty industrial applications in the United States, China, South Korea, Japan, Taiwan, Singapore, and internationally. It operates through Vacuum Solutions Division (VSD), Photonics Solutions Division (PSD), and Material Solutions Division (MSD) segments. The VSD segment provides foundational technology solutions, including pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, electronic control technology, reactive gas generation and delivery, power generation and delivery, and fiber optic temperature and position sensing. The PSD segment offers range of solutions, which include lasers, beam measurement and profiling, precision motion control, vibration isolation systems, photonics instruments, temperature sensing, opto-mechanical components, optical elements, systems for flexible PCB laser processing, and laser-based systems, as well as high density interconnect PCB and package manufacturing. The MSD segment develops, process, and manufactures technologies comprising advanced surface modification, electroless and electrolytic plating, and surface finishing for chemistry, equipment, and services markets, as well as high-technology applications. In addition, the company sells its products and services through direct sales, network of independent distributors, and sales representatives, as well as websites, including product catalogs. MKS Inc. was formerly known as MKS Instruments, Inc. and changed its name to MKS Inc. in May 2025. The company was incorporated in 1961 and is headquartered in Andover, Massachusetts.
Company website: www.mks.com
MKSI insider activity at a glance
FilingIQ has scored 919 insider transactions for MKSI since Jan 30, 2014. The most recent filing in our index is dated May 14, 2026.
Across the full history, 3 open-market purchases
and 190 open-market sales
were filed under transaction codes P and S respectively. Compensatory share awards
(code A) and option exercises (code M) are tracked separately and not counted here.
The average FilingIQ composite score on MKSI insider trades is 59.2/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.
Latest MKSI Form 4 filings
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Frequently asked
- How many insider trades does FilingIQ track for MKSI?
- FilingIQ tracks 919 Form 4 insider transactions for MKSI (MKS INC), covering filings from Jan 30, 2014 onwards. 126 of those were filed in the last 90 days.
- Are MKSI insiders net buyers or net sellers?
- Across the full Form 4 history for MKSI, 3 transactions (0%) were open-market purchases and 190 (21%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
- Where does MKSI insider data come from?
- Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.
- What sector is MKSI in?
- MKS INC (MKSI) is classified in the Technology sector, specifically Scientific & Technical Instruments, with a current market capitalisation of $17.51B.
Methodology & sources
Every MKSI insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.