Waters Corporation (WAT) · Insider trading
What Waters's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$451,070
2 insiders, 2 trades
Sold, 12 months
$1.44M
1 insider, 0% under a plan
Net, 12 months
−$991,860
bought less sold
Latest filing
2026-10-02
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Kuebler Christopher ADirector | – | $1.44M | 1 | 2026-08-06 | 17,808 |
| Fearon Richard HDirector | $306,340 | – | 1 | 2026-03-06 | 3,302 |
| Jiang WeiDirector | $144,730 | – | 1 | 2026-03-16 | 3,441 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
59 × grant or award17 × shares withheld for tax2 × option exercise
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-30 | Jiang WeiDirector | Grant or award A | +57 | – | 3,630 | Form 4 |
| 2026-09-30 | Knight HeatherDirector | Grant or award A | +57 | – | 1,338 | Form 4 |
| 2026-08-06 | Kuebler Christopher ADirector | Option exercise M | +3,626 | 136.43 | 21,434 | Form 4 |
| 2026-06-30 | Jiang WeiDirector | Grant or award A | +67 | – | 3,573 | Form 4 |
| 2026-06-30 | Knight HeatherDirector | Grant or award A | +63 | – | 1,281 | Form 4 |
| 2026-06-24 | Carpio Robert L IIISVP Waters Analytical Sciences | Shares withheld for tax F | −189 | 369.18 | 3,426 | Form 4 |
| 2026-05-12 | Chaubal AmolSVP & Chief Financial Officer | Shares withheld for tax F | −239 | 352.21 | 7,623 | Form 4 |
| 2026-04-06 | Bennett JianqingSVP Waters Adv. Diagnostics | Shares withheld for tax F | −302 | 304.09 | 6,532 | Form 4 |
| 2026-03-31 | Knight HeatherDirector | Grant or award A | +68 | – | 1,218 | Form 4 |
| 2026-03-31 | Jiang WeiDirector | Grant or award A | +64 | – | 3,505 | Form 4 |
| 2026-03-02 | Bennett JianqingSVP Waters Adv. Diagnostics | Shares withheld for tax F | −410 | 307.23 | 6,834 | Form 4 |
| 2026-03-02 | Chaubal AmolSVP & Chief Financial Officer | Shares withheld for tax F | −709 | 307.23 | 7,796 | Form 4 |
| 2026-03-02 | Batra UditDirector, President and CEO | Shares withheld for tax F | −3,417 | 307.23 | 33,140 | Form 4 |
| 2026-02-25 | Ornskov FlemmingDirector | Grant or award A | +336 | – | 5,271 | Form 4 |
| 2026-02-25 | Baddour LindaDirector | Grant or award A | +23 | – | 2,899 | Form 4 |
| 2026-02-25 | Brennan Daniel J.Director | Grant or award A | +23 | – | 1,355 | Form 4 |
| 2026-02-25 | Fearon Richard HDirector | Grant or award A | +23 | – | 2,302 | Form 4 |
| 2026-02-25 | Fraser ClaireDirector | Grant or award A | +358 | – | 489 | Form 4 |
| 2026-02-25 | Huang Pearl SDirector | Grant or award A | +23 | – | 3,276 | Form 4 |
| 2026-02-25 | Jiang WeiDirector | Grant or award A | +23 | – | 2,941 | Form 4 |
| 2026-02-25 | Knight HeatherDirector | Grant or award A | +23 | – | 1,149 | Form 4 |
| 2026-02-25 | Kuebler Christopher ADirector | Grant or award A | +23 | – | 17,808 | Form 4 |
| 2026-02-25 | Vergnano MarkDirector | Grant or award A | +23 | – | 4,540 | Form 4 |
| 2026-02-25 | Batra UditDirector, President and CEO | Grant or award A | +5,165 | – | 36,557 | Form 4 |
| 2026-02-25 | Chaubal AmolSVP & Chief Financial Officer | Grant or award A | +1,455 | – | 8,505 | Form 4 |
| 2026-02-25 | Bennett JianqingSVP Waters Adv. Diagnostics | Grant or award A | +986 | – | 7,244 | Form 4 |
| 2026-02-25 | Carpio Robert L IIISVP Waters Analytical Sciences | Grant or award A | +997 | – | 3,615 | Form 4 |
| 2026-02-05 | Batra UditDirector, President and CEO | Shares withheld for tax F | −218 | 376.89 | 31,392 | Form 4 |
| 2026-02-05 | Chaubal AmolSVP & Chief Financial Officer | Shares withheld for tax F | −58 | 376.89 | 7,050 | Form 4 |
| 2026-02-05 | Bennett JianqingSVP TA Instruments Division | Shares withheld for tax F | −43 | 376.89 | 6,258 | Form 4 |
| 2026-02-05 | Carpio Robert L IIISVP, Waters Division | Shares withheld for tax F | −38 | 376.89 | 2,618 | Form 4 |
| 2026-02-04 | Batra UditDirector, President and CEO | Grant or award A | +7,066 | – | 31,610 | Form 4 |
| 2026-02-04 | Chaubal AmolSVP & Chief Financial Officer | Grant or award A | +1,884 | – | 7,108 | Form 4 |
| 2026-02-04 | Bennett JianqingSVP TA Instruments Division | Grant or award A | +1,385 | – | 6,301 | Form 4 |
| 2026-01-02 | Knight HeatherDirector | Grant or award A | +307 | – | 1,126 | Form 4 |
| 2026-01-02 | Jiang WeiDirector | Grant or award A | +307 | – | 2,918 | Form 4 |
| 2026-01-02 | Ornskov FlemmingDirector | Grant or award A | +307 | – | 4,935 | Form 4 |
| 2026-01-02 | Baddour LindaDirector | Grant or award A | +307 | – | 2,876 | Form 4 |
| 2026-01-02 | Brennan Daniel J.Director | Grant or award A | +307 | – | 1,332 | Form 4 |
| 2026-01-02 | Fearon Richard HDirector | Grant or award A | +307 | – | 2,279 | Form 4 |
| 2026-01-02 | Huang Pearl SDirector | Grant or award A | +307 | – | 3,253 | Form 4 |
| 2026-01-02 | Kuebler Christopher ADirector | Grant or award A | +307 | – | 17,785 | Form 4 |
| 2026-01-02 | Vergnano MarkDirector | Grant or award A | +307 | – | 4,517 | Form 4 |
| 2025-12-31 | Knight HeatherDirector | Grant or award A | +60 | – | 819 | Form 4 |
| 2025-12-31 | Jiang WeiDirector | Grant or award A | +60 | – | 2,611 | Form 4 |
| 2025-11-05 | Kuebler Christopher ADirector | Option exercise M | +3,761 | 130.35 | 18,796 | Form 4 |
| 2025-11-05 | Kuebler Christopher ADirector | Shares withheld for tax F | −1,318 | 371.97 | 17,478 | Form 4 |
| 2025-09-30 | Jiang WeiDirector | Grant or award A | +73 | – | 2,551 | Form 4 |
| 2025-09-30 | Knight HeatherDirector | Grant or award A | +78 | – | 759 | Form 4 |
| 2025-06-30 | Jiang WeiDirector | Grant or award A | +68 | – | 2,479 | Form 4 |
| 2025-06-30 | Knight HeatherDirector | Grant or award A | +68 | – | 681 | Form 4 |
| 2025-06-24 | Carpio Robert L IIISVP, Waters Division | Shares withheld for tax F | −134 | 346.80 | 2,656 | Form 4 |
| 2025-05-12 | Chaubal AmolSVP & Chief Financial Officer | Shares withheld for tax F | −239 | 366.67 | 5,224 | Form 4 |
| 2025-04-07 | Bennett JianqingSVP TA Instruments Division | Shares withheld for tax F | −303 | 325.80 | 4,916 | Form 4 |
| 2025-03-31 | Knight HeatherDirector | Grant or award A | +53 | – | 613 | Form 4 |
| 2025-03-31 | Jiang WeiDirector | Grant or award A | +53 | – | 2,410 | Form 4 |
| 2025-03-01 | Batra UditDirector, President and CEO | Shares withheld for tax F | −4,976 | 371.79 | 24,544 | Form 4 |
| 2025-03-01 | Chaubal AmolSVP & Chief Financial Officer | Shares withheld for tax F | −1,076 | 371.79 | 5,368 | Form 4 |
| 2025-03-01 | Bennett JianqingSVP TA Instruments Division | Shares withheld for tax F | −786 | 371.79 | 5,219 | Form 4 |
| 2025-02-05 | Carpio Robert L IIISVP, Waters Division | Grant or award A | +543 | – | 2,790 | Form 4 |
| 2025-02-05 | Bennett JianqingSVP TA Instruments Division | Grant or award A | +2,618 | – | 5,390 | Form 4 |
| 2025-02-05 | Bennett JianqingSVP TA Instruments Division | Grant or award A | +615 | – | 6,005 | Form 4 |
| 2025-02-05 | Chaubal AmolSVP & Chief Financial Officer | Grant or award A | +3,317 | – | 5,612 | Form 4 |
| 2025-02-05 | Chaubal AmolSVP & Chief Financial Officer | Grant or award A | +833 | – | 6,444 | Form 4 |
| 2025-02-05 | Batra UditDirector, President and CEO | Grant or award A | +11,349 | – | 25,898 | Form 4 |
| 2025-02-05 | Batra UditDirector, President and CEO | Grant or award A | +3,622 | – | 29,520 | Form 4 |
| 2025-01-02 | Brennan Daniel J.Director | Grant or award A | +319 | – | 1,025 | Form 4 |
| 2025-01-02 | Baddour LindaDirector | Grant or award A | +319 | – | 2,569 | Form 4 |
| 2025-01-02 | Fearon Richard HDirector | Grant or award A | +319 | – | 1,972 | Form 4 |
| 2025-01-02 | Kuebler Christopher ADirector | Grant or award A | +319 | – | 15,035 | Form 4 |
| 2025-01-02 | Ornskov FlemmingDirector | Grant or award A | +319 | – | 4,628 | Form 4 |
| 2025-01-02 | Vergnano Mark PDirector | Grant or award A | +319 | – | 4,210 | Form 4 |
| 2025-01-02 | Huang Pearl SDirector | Grant or award A | +319 | – | 2,946 | Form 4 |
| 2025-01-02 | Jiang WeiDirector | Grant or award A | +319 | – | 2,357 | Form 4 |
| 2025-01-02 | Knight HeatherDirector | Grant or award A | +319 | – | 560 | Form 4 |
| 2024-12-31 | Huang Pearl SDirector | Grant or award A | +83 | – | 2,627 | Form 4 |
| 2024-12-31 | Knight HeatherDirector | Grant or award A | +72 | – | 241 | Form 4 |
| 2024-12-31 | Jiang WeiDirector | Grant or award A | +81 | – | 2,038 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.