Waters Corporation
A maker of analytical instruments that help scientists separate, identify, and measure chemicals, Waters Corporation builds liquid chromatography and mass spectrometry systems (like ACQUITY UPLC and Xevo) used by pharmaceutical, industrial, and academic labs, plus thermal analysis tools under its TA Instruments brand. Founded in 1958 by James Waters, the company began as a five-person "research boutique" in the basement of the Framingham, Massachusetts police station, building custom instruments like nerve gas detectors before becoming a leader in chromatography.
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| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Salice Thomas PDirector · 1 transaction | -8.1% | 166.1Kas of Jan 2022 | 301 | — | — |
| Conard EdwardDirector · 6 transactions | +5% | 74.5Kas of Apr 2023 | 8.6K | — | 5.1K |
| Batra UditPresident and CEO, Director · 13 transactions | +181.1% | 33.1K | 41.7K | — | — |
| Kuebler Christopher ADirector · 14 transactions | +29.4% | 17.8K | 17.4K | — | 12.0K |
| Chaubal AmolSVP & Chief Financial Officer · 12 transactions | +208.6% | 7.6K | 7.5K | — | — |
| Welch Daniel J.SVP Global Operations · 2 transactions | +15.4% | 7.2Kas of Feb 2022 | — | — | — |
| Bennett JianqingSVP Waters Adv. Diagnostics · 12 transactions | +93.1% | 6.5K | 5.6K | — | — |
| Hendrickson Gary EDirector · 10 transactions | +319.5% | 6.5Kas of May 2022 | 6.3K | — | 6.0K |
| Pratt Jonathan MSVP Waters Division · 9 transactions | +94.9% | 6.0Kas of Oct 2023 | 3.4K | — | — |
| Ornskov FlemmingDirector · 6 transactions | +57.1% | 5.3K | 1.9K | — | — |
| Vergnano MarkDirector · 2 transactions | — | 4.5K | 330 | — | — |
| Vergnano Mark PDirector · 5 transactions | — | 4.2Kas of Jan 2025 | 1.0K | 3.2K | — |
| Jiang WeiDirector · 15 transactions | +2284.6% | 3.5K | 2.1K | 500 | — |
| Carpio Robert L IIISVP Waters Analytical Sciences · 6 transactions | — | 3.4K | 3.8K | — | — |
| Aleman Keeley ASVP General Counsel & Corp Sec · 6 transactions | +21.8% | 3.4Kas of Mar 2022 | 850 | — | — |
| Fearon Richard HDirector · 7 transactions | — | 3.3K | 1.3K | 2.0K | — |
| Silveira Michael FVP, Corporate Controller · 3 transactions | +23.1% | 3.3Kas of May 2022 | 973 | — | — |
| Huang Pearl SDirector · 9 transactions | +646.3% | 3.3K | 1.8K | — | — |
| Baddour LindaDirector · 7 transactions | -5.2% | 2.9K | 1.6K | — | 500 |
| Brennan Daniel J.Director · 6 transactions | — | 1.4K | 1.4K | — | — |
| Hyde BelindaSVP, Global Human Resources · 1 transaction | -7% | 1.2Kas of Feb 2022 | — | — | — |
| Knight HeatherDirector · 11 transactions | — | 1.2K | 1.2K | — | — |
| Fraser ClaireDirector · 1 transaction | — | 489 | 358 | — | — |
| Ballbach John MDirector · 2 transactions | — | 379as of Jan 2022 | 379 | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -17.8K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.