WAT insider buying
1 cluster buyWATERS CORP /DE/ · Healthcare
When two or more insiders at WATERS CORP /DE/ buy WAT on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in WAT plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Mar 6 – Mar 16, 2026Detected Mar 16, 20262 insidersTotal bought$451.1KMarket cap$37.2B
All notable open-market buys in WAT
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Mar 16, 2026 | Jiang Weicluster Director | 500 | $289.46 | $144.7K | SEC ↗ |
| Mar 6, 2026 | FEARON RICHARD Hcluster Director | 1,000 | $306.34 | $306.3K | SEC ↗ |
| May 28, 2024 | Director | 1,000 | $332.90 | $332.9K | SEC ↗ |
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WAT insider buying — FAQ
- Are insiders buying WAT stock?
- Yes — 2 distinct insiders have bought WAT (WATERS CORP /DE/) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 18, 2026.
- How much WAT stock have insiders bought?
- Insiders have bought a combined $784.0K of WAT across 3 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in WAT?
- A cluster buy is two or more distinct WATERS CORP /DE/ insiders — officers, directors, or 10% owners — each buying WAT on the open market within a rolling window. WAT has 1 detected cluster buy to date.
- Where does this WAT insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in WAT
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy WAT within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding WAT.