Waters Corporation (WAT)Rep. Debbie Dingell (MI06) disclosed an exchange $1K–$15K

$1,001–$15,000

Reported range · official band, not an exact amount

13 days

Disclosure lag

Traded

Feb 10, 2026

Disclosed

Feb 23, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Oct 23, 2024CongressDisclosed purchase of WAT — reported range $1,001 - $15,000
2. Nov 19, 2024CongressDisclosed sale of WAT — reported range $1,001 - $15,000
3. Dec 8, 2025CongressDisclosed purchase of WAT — reported range $1,001 - $15,000
4. Feb 9, 2026Company filing · Form 8-K · Material agreement, Acquisition or saleCompleted buying or selling a business or assets, and changed a top executive or board member (and 3 more items)“Appointment of New Director In connection with the closing of the Transactions and in accordance with the terms of the Merger Agreement, the board of directors (the “Board”) of Waters increased the size of the Board from 10 to 11 members and appointed Claire M. Fraser, Ph.D. to the Board, effective February 9, 2026, to fill the vacancy so created.”
5. Feb 9, 2026Company filing · Form 8-K · ResultsReported its results

What came next

1. Feb 13, 2026CongressDisclosed partial sale of WAT — reported range $1,001 - $15,000
2. Mar 6, 2026Insider · First insider buy since May 2024Director purchased ~$306K of WAT shares in the open market
3. Mar 10, 2026CongressDisclosed partial sale of WAT — reported range $1,001 - $15,000
4. Mar 16, 2026Insider · Their first buy on recordDirector purchased ~$145K of WAT shares in the open market
5. Mar 18, 2026CongressDisclosed purchase of WAT — reported range $1,001 - $15,000
6. Mar 23, 2026Company filing · Form 8-K · Material agreement, New debtSigned an important agreement, and took on new debt or obligations (and 1 more item)
7. Mar 27, 20265% stakeThe Vanguard Group reported a passive stake (13G)
8. Apr 24, 20265% stakeBlackRock, Inc. reported a passive stake (13G) of 7.8%
9. Apr 30, 20265% stakeVanguard Capital Management reported a passive stake (13G) of 7.5%
10. May 5, 2026Company filing · Form 8-K · ResultsReported its results
11. May 15, 20265% stakeFundsmith LLP reported a passive stake (13G) of 4.4%

How to read House Clerk periodic transaction report

The STOCK Act is a 2012 US law that requires members of Congress, and some senior staff, to publicly report their stock trades, and those of their spouse and dependent children, within 45 days.

Full guide: What is the STOCK Act?

What else is on file for Waters Corporation

For Waters Corporation, OQRO holds 1 insider filing (SEC Form 4 or Form 144), 1 Congress trade report and 23 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its WAT page.

Other recent filings by Rep. Debbie Dingell (MI06)

• House Clerk periodic transaction report at Versant Media Group, Inc. (VSNT)Jan 12, 2026
• House Clerk periodic transaction report at Solstice Advanced Materials (SOLS)Dec 6, 2025
• House Clerk periodic transaction report at Solstice Advanced Materials (SOLS)Dec 6, 2025
• House Clerk periodic transaction report at Apple (AAPL)Dec 6, 2025
• House Clerk periodic transaction report at Honeywell (HON)Dec 6, 2025

The full history of Rep. Debbie Dingell (MI06) is on the profile page.

How this filing works

• The STOCK Act

Other disclosures at Waters Corporation

• House Clerk periodic transaction reportSep 1, 2026
• SEC Form 13F-HRAug 18, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026

Everything OQRO holds on this company is on its WAT page.