Waters Corporation (WAT) Insider Trading
Over the last 3 months, WAT insiders made 0 open-market buys and 1 sale, a net sale of -$1.4M (SEC Form 4). Over the last 6 months, 919 institutions increased and 601 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
1
Net (3m)
-$1.4M
Insider trades by month Buys Sells
Mar
Aug
Mar
May
Mar
Aug
Context3-month price +7.5%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 7, 2026 | KUEBLER CHRISTOPHER Adirector | Sell | 3,626 | $397.94 |
| Aug 7, 2026 | KUEBLER CHRISTOPHER Adirector | Option | 3,626 | $136.43 |
| Jul 2, 2026 | Knight Heatherdirector | Grant | 63 | — |
| Jul 2, 2026 | Jiang Weidirector | Grant | 67 | — |
| Jun 25, 2026 | Carpio Robert L IIIofficer: SVP Waters Analytical Sciences | Tax | 189 | $369.18 |
| May 14, 2026 | Chaubal Amolofficer: SVP & Chief Financial Officer | Tax | 239 | $352.21 |
| Apr 7, 2026 | Bennett Jianqingofficer: SVP Waters Adv. Diagnostics | Tax | 302 | $304.09 |
| Apr 2, 2026 | Jiang Weidirector | Grant | 64 | — |
| Apr 2, 2026 | Knight Heatherdirector | Grant | 68 | — |
| Mar 10, 2026 | FEARON RICHARD Hdirector | Buy | 1,000 | $306.34 |
| Feb 27, 2026 | Huang Pearl Sdirector | Grant | 23 | — |
| Feb 27, 2026 | Knight Heatherdirector | Grant | 23 | — |
| Feb 27, 2026 | Fraser Clairedirector | Grant | 877 | $319.44 |
| Feb 27, 2026 | Huang Pearl Sdirector | Grant | 57 | $319.44 |
| Feb 27, 2026 | FEARON RICHARD Hdirector | Grant | 23 | — |
| Feb 27, 2026 | Carpio Robert L IIIofficer: SVP Waters Analytical Sciences | Grant | 4,884 | $319.44 |
| Feb 27, 2026 | Bennett Jianqingofficer: SVP Waters Adv. Diagnostics | Grant | 4,826 | $319.44 |
| Feb 27, 2026 | Chaubal Amolofficer: SVP & Chief Financial Officer | Grant | 7,125 | $319.44 |
| Feb 27, 2026 | Ornskov Flemmingdirector | Grant | 57 | $319.44 |
| Feb 27, 2026 | Fraser Clairedirector | Grant | 358 | — |
| Feb 27, 2026 | FEARON RICHARD Hdirector | Grant | 57 | $319.44 |
| Feb 27, 2026 | Ornskov Flemmingdirector | Grant | 336 | — |
| Feb 27, 2026 | Brennan Daniel J.director | Grant | 23 | — |
| Feb 27, 2026 | Jiang Weidirector | Grant | 23 | — |
| Feb 27, 2026 | BADDOUR LINDAdirector | Grant | 57 | $319.44 |
| Feb 27, 2026 | Knight Heatherdirector | Grant | 57 | $319.44 |
| Feb 27, 2026 | Vergnano Markdirector | Grant | 23 | — |
| Feb 27, 2026 | KUEBLER CHRISTOPHER Adirector | Grant | 23 | — |
| Feb 27, 2026 | Bennett Jianqingofficer: SVP Waters Adv. Diagnostics | Grant | 986 | — |
| Feb 27, 2026 | Chaubal Amolofficer: SVP & Chief Financial Officer | Grant | 1,455 | — |
Source: WAT SEC Form 4 filings, latest Aug 7, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their WAT positions over the last 6 months (SEC Form 13F).
Increased
919
New positions
626
Reduced
601
Sold out
139
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 8.5M | May 13, 2026 |
| BlackRock, Inc. | Reduced | 8.5M | Aug 7, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 6.4M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 6.4M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 4.8M | May 8, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 4.7M | Aug 13, 2026 |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | Increased | 4.7M | May 15, 2026 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Increased | 4.6M | May 14, 2026 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | 4.6M | Aug 3, 2026 |
| STATE STREET CORP | Increased | 4.4M | Aug 7, 2026 |
| STATE STREET CORP | Increased | 4.4M | May 15, 2026 |
| T. Rowe Price Investment Management, Inc. | Reduced | 3.8M | Aug 14, 2026 |
| Invesco Ltd. | Increased | 3.5M | Aug 14, 2026 |
| FUNDSMITH LLP | Reduced | 3.2M | May 15, 2026 |
| ALLIANCEBERNSTEIN L.P. | Increased | 2.7M | Aug 14, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.