WATERS CORP /DE/ (WAT) Insider Transactions
Over the last 12 months, 14 WATERS CORP /DE/ (WAT) insiders filed 72 SEC Form 4 transactions — $451.1K in open-market purchases ( 2 distinct buyers) and $0 in open-market sales. 0% of all transactions were executed under a pre-scheduled Rule 10b5-1 trading plan.
- $451.1KOpen-market buys (1y)
- $0Open-market sells (1y)
- 14Distinct insiders
- 72Transactions filed
- 0%Under Rule 10b5-1 plan
- 2026-05-12Latest filing
Recent Form 4 Filings Most recent 50 of 72 (1-year window)
Each row is a single Form 4 filing event for WAT, sourced directly from SEC EDGAR. The Type column classifies the SEC transaction code into Buy / Sell / Grant / Exercise / Other; the 10b5-1 badge marks trades executed under a pre-scheduled SEC Rule 10b5-1 plan.
| Date | Insider | Title | Type | SEC Code | Value | Shares | Price |
|---|---|---|---|---|---|---|---|
| 2026-05-12 | Chaubal Amol | SVP & Chief Financial Officer | Other | F | $84.2K | 239 | $352.21 |
| 2026-04-06 | Bennett Jianqing | SVP Waters Adv. Diagnostics | Other | F | $91.8K | 302 | $304.09 |
| 2026-03-31 | Jiang Wei | — | Grant | A | $0 | 64 | $0.00 |
| 2026-03-31 | Knight Heather | — | Grant | A | $0 | 68 | $0.00 |
| 2026-03-16 | Jiang Wei | — | Buy | — | $144.7K | 500 | $289.46 |
| 2026-03-06 | FEARON RICHARD H | — | Buy | — | $306.3K | 1,000 | $306.34 |
| 2026-03-02 | Batra Udit | President and CEO | Grant | — | $1.0M | 3,417 | $307.23 |
| 2026-03-02 | Chaubal Amol | SVP & Chief Financial Officer | Grant | — | $217.8K | 709 | $307.23 |
| 2026-03-02 | Bennett Jianqing | SVP Waters Adv. Diagnostics | Grant | — | $126.0K | 410 | $307.23 |
| 2026-02-25 | Carpio Robert L III | SVP Waters Analytical Sciences | Grant | — | $0 | 997 | $0.00 |
| 2026-02-25 | Carpio Robert L III | SVP Waters Analytical Sciences | Grant | — | $0 | 4,884 | $0.00 |
| 2026-02-25 | Bennett Jianqing | SVP Waters Adv. Diagnostics | Grant | — | $0 | 986 | $0.00 |
| 2026-02-25 | Bennett Jianqing | SVP Waters Adv. Diagnostics | Grant | — | $0 | 4,826 | $0.00 |
| 2026-02-25 | Chaubal Amol | SVP & Chief Financial Officer | Grant | — | $0 | 1,455 | $0.00 |
| 2026-02-25 | Chaubal Amol | SVP & Chief Financial Officer | Grant | — | $0 | 7,125 | $0.00 |
| 2026-02-25 | Batra Udit | President and CEO | Grant | — | $0 | 5,165 | $0.00 |
| 2026-02-25 | Batra Udit | President and CEO | Grant | — | $0 | 25,283 | $0.00 |
| 2026-02-25 | Vergnano Mark | — | Grant | — | $0 | 23 | $0.00 |
| 2026-02-25 | Vergnano Mark | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-25 | KUEBLER CHRISTOPHER A | — | Grant | — | $0 | 23 | $0.00 |
| 2026-02-25 | KUEBLER CHRISTOPHER A | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-25 | Knight Heather | — | Grant | — | $0 | 23 | $0.00 |
| 2026-02-25 | Knight Heather | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-25 | Jiang Wei | — | Grant | — | $0 | 23 | $0.00 |
| 2026-02-25 | Jiang Wei | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-25 | Huang Pearl S | — | Grant | — | $0 | 23 | $0.00 |
| 2026-02-25 | Huang Pearl S | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-25 | Fraser Claire | — | Grant | — | $0 | 358 | $0.00 |
| 2026-02-25 | Fraser Claire | — | Grant | — | $0 | 877 | $0.00 |
| 2026-02-25 | FEARON RICHARD H | — | Grant | — | $0 | 23 | $0.00 |
| 2026-02-25 | FEARON RICHARD H | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-25 | Brennan Daniel J. | — | Grant | — | $0 | 23 | $0.00 |
| 2026-02-25 | Brennan Daniel J. | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-25 | BADDOUR LINDA | — | Grant | — | $0 | 23 | $0.00 |
| 2026-02-25 | BADDOUR LINDA | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-25 | Ornskov Flemming | — | Grant | — | $0 | 336 | $0.00 |
| 2026-02-25 | Ornskov Flemming | — | Grant | — | $0 | 57 | $0.00 |
| 2026-02-05 | Carpio Robert L III | SVP, Waters Division | Grant | — | $14.3K | 38 | $376.89 |
| 2026-02-05 | Bennett Jianqing | SVP TA Instruments Division | Grant | — | $16.2K | 43 | $376.89 |
| 2026-02-05 | Chaubal Amol | SVP & Chief Financial Officer | Grant | — | $21.9K | 58 | $376.89 |
| 2026-02-05 | Batra Udit | President and CEO | Grant | — | $82.2K | 218 | $376.89 |
| 2026-02-04 | Bennett Jianqing | SVP TA Instruments Division | Grant | — | $0 | 1,385 | $0.00 |
| 2026-02-04 | Chaubal Amol | SVP & Chief Financial Officer | Grant | — | $0 | 1,884 | $0.00 |
| 2026-02-04 | Batra Udit | President and CEO | Grant | — | $0 | 7,066 | $0.00 |
| 2026-01-02 | Vergnano Mark | — | Grant | — | $0 | 307 | $0.00 |
| 2026-01-02 | Vergnano Mark | — | Grant | — | $0 | 828 | $0.00 |
| 2026-01-02 | KUEBLER CHRISTOPHER A | — | Grant | — | $0 | 307 | $0.00 |
| 2026-01-02 | KUEBLER CHRISTOPHER A | — | Grant | — | $0 | 828 | $0.00 |
| 2026-01-02 | Huang Pearl S | — | Grant | — | $0 | 307 | $0.00 |
| 2026-01-02 | Huang Pearl S | — | Grant | — | $0 | 828 | $0.00 |
Showing the most recent 50 of 72 transactions. For the full 1-year history with sorting, filtering, and cross-ticker industry context, open the full insider transactions drilldown.
Top Insider Buyers of WAT By dollar volume, 1-year window
- FEARON RICHARD H $306.3K
- Jiang Wei $144.7K
Methodology & FAQ
How We Track WAT Insider Transactions
Form 4 disclosures are sourced directly from SEC EDGAR and re-ingested on every pipeline cycle. A complete description of transaction-code handling, the open-market vs grant distinction, and the Rule 10b5-1 plan-reference heuristic is documented in the Methodology.
What is an SEC Form 4 filing for WATERS CORP /DE/?
Form 4 is a transaction-level disclosure that corporate insiders — officers, directors, and beneficial owners of more than 10% of a registered class of equity securities — must file with the SEC within two business days of any change in their beneficial ownership of WATERS CORP /DE/ (WAT) shares.
What is a Rule 10b5-1 trading plan?
Rule 10b5-1 is an SEC rule that lets insiders schedule trades in advance under a written plan, providing an affirmative defense against insider-trading allegations as long as the plan was adopted in good faith and not while in possession of material non-public information. Form 4 rows marked "10b5-1" on this page indicate the underlying trade was executed under such a plan; rows without the badge are discretionary or did not reference a plan in the Form 4 footnotes.
How is "insider buying" different from a stock grant or option exercise?
An insider buy (SEC transaction code P) is an open-market purchase of WATERS CORP /DE/ (WAT) stock executed at the prevailing market price using the insider's personal capital. Stock grants (code A) and option exercises (code M) are compensation events, not directional trades; they are tracked separately and excluded from the "conviction" signal because they are not discretionary purchases.
How recent is the data?
Form 4 transactions are typically reported within two business days of execution. Pactolio re-ingests the EDGAR feed on a nightly cycle and reflects new filings on the next ingest run, typically within 24 hours of EDGAR acceptance. The table on this page covers the most recent 1-year window.