WATERS CORP /DE/ (WAT)
Latest WAT Insider Trades
- Christopher A. Kuebler - DirectorOpen-market sale$1.44M
Wei Jiang - DirectorOpen-market purchase$145K
Richard H. Fearon
About WATERS CORP /DE/ (WAT)
Waters sells liquid chromatography, mass spectrometry, and thermal analysis tools. These analytical instruments provide essential information on various products, such as their molecular structures and physical properties, to help clients enhance the health and well-being of end users. In early 2026, Waters merged with Becton Dickinson's life science and diagnostics business, which increased its concentration in diagnostics and discovery-related life science tools.
- MILFORD, MA
- 7,900
- 1995
- XNYS
90-Day SEC Filing Activity
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 1 | 3,626 | $1.44M |
| Grant or award | 2 | 130.45 | |
| Option exercise | 2 | 7,252 |
WAT Insider Transactions (Form 4)
4853 Form 4 filings on record, the earliest from Oct 2, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Christopher A. Kuebler - Director | Option exercise | Common Stock | 3,626 |
Recent WAT Form 8-K Filings
5Recent WAT Form 144 Notices of Proposed Sale
1A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| KUEBLER CHRISTOPHER A | Director | 3,626 | $1.44M | View on EDGAR |
WAT Insider Trading - FAQ
What is the latest insider trade for WAT?
WATERS CORP /DE/ (WAT) had 4 insider filings in the last 90 days, with the most recent on 2026-08-07. The full record for WAT runs to 53 Form 4 filings, the earliest from 2024-10-02. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
How many insiders are buying WAT stock?
No insider purchases of WAT were filed in the last 90 days. 2 purchases are on record for this company.
How many insiders are selling WAT stock?
1 insider sale of WAT was filed in the last 90 days, totaling $1.44M.
Where can I see WAT SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page tracks WAT Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
How can I follow WAT insider buys?
Create a free InsiderAlpha account and press Watch on this page to add WAT to your watchlist. A free account also opens the full scored daily plan with every past day and 3 months of price history. No card is required. Sign up at https://insideralpha.ai/register.
More Health Care Companies with Insider Activity
Recent Insider Filings
10Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
- - Christopher A. Kuebler view on EDGAR
- - Heather Knight view on EDGAR
- - Wei Jiang view on EDGAR
- - Robert L. Carpio III view on EDGAR
- - Amol Chaubal view on EDGAR
- - Jianqing Bennett view on EDGAR
- - Wei Jiang view on EDGAR
- - Heather Knight view on EDGAR
- - Wei Jiang view on EDGAR
Related Companies - Recent Insider Activity
Learn More
- What is SEC Form 4?
- The filing insiders must submit within two business days of a trade, and how to read its transaction codes.
- Insider activity in Health Care
- Where WAT's peers are being bought and sold.
- Every recent Form 4
- The full market-wide feed, updated as filings arrive from SEC EDGAR.
Track WAT insider activity as it files
Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
