WAT insider trading
NYSE HealthcareWATERS CORP /DE/: insider trade history from SEC Form 4 filings.
About WATERS CORP /DE/
Waters Corporation provides analytical workflow solutions in Asia, the Americas, and Europe. The company operates through two segments, Waters and TA. The company designs, manufactures, sells, and services liquid chromatography, as well as mass spectrometry (MS) technology systems and supports products, including chromatography columns, and other consumable products. It also designs, manufactures, sells, and services thermal analysis, rheometry, and calorimetry instruments for use in predicting the suitability and stability of fine chemicals, pharmaceuticals, water, polymers, metals, and viscous liquids for various industrial, consumer goods, and healthcare products, as well as for life science research; and develops and supplies software-based products that interface with its instruments, as well as other manufacturers' instruments. In addition, the company offers MS technology, which is used in drug discovery and development comprising clinical trial testing, the analysis of proteins in disease processes, nutritional safety analysis, and environmental testing. Its products are used by clinical, pharmaceutical, biochemical, industrial, nutritional safety, environmental, academic, and governmental customers working in research and development, quality assurance, and other laboratory applications. The company was founded in 1958 and is headquartered in Milford, Massachusetts.
Company website: www.waters.com
WAT insider activity at a glance
FilingIQ tracks 830 insider transactions for WAT in filings since Jan 5, 2015. The most recent transaction is dated Sep 30, 2026.
Across the full history, 4 open-market purchases
and 232 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 WAT insider trades is 65.5/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.
Latest WAT Form 4 filings
Most recent disclosures. Sign up to filter by score, transaction code, or insider role.
Other Healthcare tickers with recent insider activity
13F funds holding WAT
Frequently asked
- How many insider trades does FilingIQ track for WAT?
- FilingIQ tracks 830 Form 4 insider transactions for WAT (WATERS CORP /DE/), covering filings from Jan 5, 2015 onwards. 4 of those are dated within the last 90 days.
- Are WAT insiders net buyers or net sellers?
- Across the full Form 4 history for WAT, 4 transactions (0%) were open-market purchases and 232 (28%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
- Where does WAT insider data come from?
- Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ normalises insider identity across reporting variations and scores discretionary open-market purchases and sales on its multi-factor composite model.
- What sector is WAT in?
- WATERS CORP /DE/ (WAT) is classified in the Healthcare sector, specifically Diagnostics & Research, with a current market capitalisation of $32.24B.
Methodology & sources
Every WAT 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.