Updated Jul 16, 2026 · Last SEC filing 2026-07-02
WATERS CORP /DE/ (WAT) has filed 4 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-02. 2 Form 8-K material event filings were reported by WAT in the last 90 days. InsiderAlpha tracks every WAT SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Laboratory Analytical Instruments (SIC 3826) |
|---|---|
| SEC CIK | 0001000697 |
| Form 4 filings (90d) | 4 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Latest Form 4 filing | 2026-07-02 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Knight Heather | Director | A — Grant or award | 63 | $0.00 | — | SEC | |
| Jiang Wei | Director | A — Grant or award | 67 | $0.00 | — | SEC | |
| Carpio Robert L III | SVP Waters Analytical Sciences | F — Tax withholding / forfeiture | 189 | $369.18 | $70K | SEC | |
| Chaubal Amol | SVP & Chief Financial Officer | F — Tax withholding / forfeiture | 239 | $352.21 | $84K | SEC | |
| Bennett Jianqing | SVP Waters Adv. Diagnostics | F — Tax withholding / forfeiture | 302 | $304.09 | $92K | SEC | |
| Jiang Wei | Director | A — Grant or award | 64 | $0.00 | — | SEC | |
| Knight Heather | Director | A — Grant or award | 68 | $0.00 | — | SEC | |
| Jiang Wei | Director | P — Open-market purchase | 500 | $289.46 | $145K | SEC | |
| FEARON RICHARD H | Director | P — Open-market purchase | 1.0K | $306.34 | $306K | SEC | |
| Chaubal Amol | SVP & Chief Financial Officer | F — Tax withholding / forfeiture | 709 | $307.23 | $218K | SEC | |
| Batra Udit | President and CEO | F — Tax withholding / forfeiture | 3.4K | $307.23 | $1.05M | SEC | |
| Bennett Jianqing | SVP Waters Adv. Diagnostics | F — Tax withholding / forfeiture | 410 | $307.23 | $126K | SEC | |
| Brennan Daniel J. | Director | A — Grant or award | 23 | $0.00 | — | SEC | |
| Batra Udit | President and CEO | A — Grant or award | 5.2K | $0.00 | — | SEC | |
| BADDOUR LINDA | Director | A — Grant or award | 23 | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for WATERS CORP /DE/ (WAT). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Jiang Wei | 1 | — |
| Knight Heather | 1 | — |
| Chaubal Amol | 1 | $84K |
| Carpio Robert L III | 1 | $70K |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in WAT insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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