WATCongressional Stock Trades
Waters Corp
Laboratory Analytical Instruments
Congressional stock trades in Waters Corp (WAT) from House and Senate STOCK Act filings. See which members of Congress bought or sold, disclosed amounts, and filing dates.
Total Trades
12
Politicians Trading
6
Last Traded
Aug 13, 2026
Trading History
| Politician | Notified | Traded | Type | Amount | Change |
|---|---|---|---|---|---|
| Debbie DingellD | Feb 23, 2026 | Feb 10, 2026 | Exchange | $1,001 - $15,000 | +40.63% |
| Gilbert Ray Cisneros, Jr.D | Oct 10, 2025 | Sep 30, 2025 | Buy | $1,001 - $15,000 | +53.40% |
| Gilbert Ray Cisneros, Jr.D | Sep 12, 2025 | Aug 26, 2025 | Buy | $1,001 - $15,000 | +55.30% |
| Gilbert Ray Cisneros, Jr.D | Sep 12, 2025 | Aug 13, 2025 | Buy | $1,001 - $15,000 | +54.94% |
| Gilbert Ray Cisneros, Jr.D | Sep 12, 2025 | Aug 12, 2025 | Buy | $1,001 - $15,000 | +61.07% |
Price History
About Waters Corp
Water sells liquid chromatography, mass spectrometry, and thermal analysis tools. These analytical instruments provide essential information on various products, such as their molecular structures and physical properties, to help clients enhance the health and well-being of end users. As a percentage of sales in 2024, Waters generated 58% from biopharmaceutical customers, 31% from industrial clients, and 11% from academic/government institutions. In early 2026, Waters plans to merge with BD's life science and diagnostics business, which will substantially change those concentrations. Waters will wind up with more concentration in diagnostics (versus none now) and discovery-related life science tools.
6 members of Congress have disclosed 12 trades in Waters Corp (WAT). Most active: Gilbert Ray Cisneros, Jr. (4), Kevin Hern (2), Lisa C. McClain (2).
Across all disclosures, members of Congress reported 7 purchases and 3 sales of Waters Corp (WAT). The most recent trade was on Aug 13, 2026.
Julia Letlow disclosed buying Waters Corp (WAT) on Dec 8, 2025, valued at $1,001 - $15,000.
Kevin Hern disclosed selling Waters Corp (WAT) on Aug 13, 2026, valued at $1,001 - $15,000.
From House and Senate periodic transaction reports filed under the STOCK Act. Members of Congress must disclose trades within 45 days, and amounts are reported as ranges, not exact values.