Waters Corp. (WAT) Insider Trading
Directors, officers and holders of more than 10% of WAT report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 123 transactions on file: 2 with code P, 1 with code S and 47 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | Jiang Wei | Director | A Award | 57 | Not measured | Not measured |
| Sep 30, 2026 | Knight Heather | Director | A Award | 57 | Not measured | Not measured |
| Aug 6, 2026 | KUEBLER CHRISTOPHER A | Director | M Exercise | 3,626 | Not measured | Not measured |
| Aug 6, 2026 | KUEBLER CHRISTOPHER A | Director | M Exercise | 3,626 | $136.43 | $494,695 |
| Aug 6, 2026 | KUEBLER CHRISTOPHER A | Director | S Sale | 3,626 | $397.94 | $1,442,930 |
| Jun 30, 2026 | Knight Heather | Director | A Award | 63 | Not measured | Not measured |
| Jun 30, 2026 | Jiang Wei | Director | A Award | 67 | Not measured | Not measured |
| Jun 24, 2026 | Carpio Robert L III | SVP Waters Analytical Sciences | F Tax Payment | 189 | $369.18 | $69,775 |
| May 12, 2026 | Chaubal Amol | SVP & Chief Financial Officer | F Tax Payment | 239 | $352.21 | $84,178 |
| Apr 6, 2026 | Bennett Jianqing | SVP Waters Adv. Diagnostics | F Tax Payment | 302 | $304.09 | $91,835 |
| Mar 31, 2026 | Jiang Wei | Director | A Award | 64 | Not measured | Not measured |
| Mar 31, 2026 | Knight Heather | Director | A Award | 68 | Not measured | Not measured |
| Mar 16, 2026 | Jiang Wei | Director | P Purchase | 500 | $289.46 | $144,730 |
| Mar 6, 2026 | FEARON RICHARD H | Director | P Purchase | 1,000 | $306.34 | $306,340 |
| Mar 2, 2026 | Batra Udit | President and CEO | F Tax Payment | 3,417 | $307.23 | $1,049,805 |
| Mar 2, 2026 | Chaubal Amol | SVP & Chief Financial Officer | F Tax Payment | 709 | $307.23 | $217,826 |
| Mar 2, 2026 | Bennett Jianqing | SVP Waters Adv. Diagnostics | F Tax Payment | 410 | $307.23 | $125,964 |
| Feb 25, 2026 | Huang Pearl S | Director | A Award | 57 | Not measured | Not measured |
| Feb 25, 2026 | Jiang Wei | Director | A Award | 23 | Not measured | Not measured |
| Feb 25, 2026 | Fraser Claire | Director | A Award | 877 | Not measured | Not measured |
| Feb 25, 2026 | Knight Heather | Director | A Award | 57 | Not measured | Not measured |
| Feb 25, 2026 | FEARON RICHARD H | Director | A Award | 23 | Not measured | Not measured |
| Feb 25, 2026 | Carpio Robert L III | SVP Waters Analytical Sciences | A Award | 997 | Not measured | Not measured |
| Feb 25, 2026 | Brennan Daniel J. | Director | A Award | 23 | Not measured | Not measured |
| Feb 25, 2026 | Fraser Claire | Director | A Award | 358 | Not measured | Not measured |
| Feb 25, 2026 | Huang Pearl S | Director | A Award | 23 | Not measured | Not measured |
| Feb 25, 2026 | Jiang Wei | Director | A Award | 57 | Not measured | Not measured |
| Feb 25, 2026 | Vergnano Mark | Director | A Award | 23 | Not measured | Not measured |
| Feb 25, 2026 | Knight Heather | Director | A Award | 23 | Not measured | Not measured |
| Feb 25, 2026 | KUEBLER CHRISTOPHER A | Director | A Award | 23 | Not measured | Not measured |
| Feb 25, 2026 | FEARON RICHARD H | Director | A Award | 57 | Not measured | Not measured |
| Feb 25, 2026 | BADDOUR LINDA | Director | A Award | 23 | Not measured | Not measured |
| Feb 25, 2026 | Ornskov Flemming | Director | A Award | 336 | Not measured | Not measured |
| Feb 25, 2026 | Batra Udit | President and CEO | A Award | 25,283 | Not measured | Not measured |
| Feb 25, 2026 | Chaubal Amol | SVP & Chief Financial Officer | A Award | 7,125 | Not measured | Not measured |
| Feb 25, 2026 | Vergnano Mark | Director | A Award | 57 | Not measured | Not measured |
| Feb 25, 2026 | KUEBLER CHRISTOPHER A | Director | A Award | 57 | Not measured | Not measured |
| Feb 25, 2026 | Chaubal Amol | SVP & Chief Financial Officer | A Award | 1,455 | Not measured | Not measured |
| Feb 25, 2026 | Carpio Robert L III | SVP Waters Analytical Sciences | A Award | 4,884 | Not measured | Not measured |
| Feb 25, 2026 | Brennan Daniel J. | Director | A Award | 57 | Not measured | Not measured |
| Feb 25, 2026 | Bennett Jianqing | SVP Waters Adv. Diagnostics | A Award | 986 | Not measured | Not measured |
| Feb 25, 2026 | BADDOUR LINDA | Director | A Award | 57 | Not measured | Not measured |
| Feb 25, 2026 | Batra Udit | President and CEO | A Award | 5,165 | Not measured | Not measured |
| Feb 25, 2026 | Bennett Jianqing | SVP Waters Adv. Diagnostics | A Award | 4,826 | Not measured | Not measured |
| Feb 25, 2026 | Ornskov Flemming | Director | A Award | 57 | Not measured | Not measured |
| Feb 5, 2026 | Batra Udit | President and CEO | F Tax Payment | 218 | $376.89 | $82,162 |
| Feb 5, 2026 | Chaubal Amol | SVP & Chief Financial Officer | F Tax Payment | 58 | $376.89 | $21,860 |
| Feb 5, 2026 | Bennett Jianqing | SVP Waters Adv. Diagnostics | F Tax Payment | 43 | $376.89 | $16,206 |
| Feb 5, 2026 | Carpio Robert L III | SVP Waters Analytical Sciences | F Tax Payment | 38 | $376.89 | $14,322 |
| Feb 4, 2026 | Batra Udit | President and CEO | A Award | 7,066 | Not measured | Not measured |
The full Form 4 history is on the WAT company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.