Waters Corp
WAT- Exchange
- NYSE
- Industry
- Laboratory Analytical Instruments
- SEC CIK
- 0001000697
No open-market purchases or sales by Waters Corp insiders were filed in the last 90 days; 1,188 institutions reported holding it in 13F filings for Q2 2026, worth $37.3B in total; 3 superinvestors hold it, including Fundsmith and Viking Global Investors.
Holders of 5% or more of WAT
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Waters Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 7.80%7.64M shares | −1.20 ppfrom 9.00% | Nov 7, 20243 filings | Apr 24, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 7.49%7.35M shares | New | Apr 30, 20261 filing | Apr 30, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
32 Schedule 13D and 13G filings on Waters Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 15, 20266:53 AM ET | Fundsmith LLPSuperinvestorFundsmith | 13G/A | 4.40%4.31M shares | –Below 5% | Mar 31, 2026 | SEC |
| Apr 30, 20262:33 PM ET | Vanguard Capital Management LLC | 13G | 7.49%7.35M shares | New | Mar 31, 2026 | SEC |
| Apr 24, 20264:11 PM ET | BlackRock, Inc. | 13G/A | 7.80%7.64M shares | −1.20 ppfrom 9.00% | Mar 31, 2026 | SEC |
| Mar 27, 20262:13 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −12.86 ppfrom 12.86%Below 5% | Mar 13, 2026 | SEC |
| Nov 14, 202512:12 PM ET | Alliancebernstein L.P. | 13G/A | 3.50%2.08M shares | −3.30 ppfrom 6.80%Below 5% | Sep 30, 2025 | SEC |
| Oct 31, 202511:42 AM ET | Vanguard Group Inc | 13G/A | 12.86%7.66M shares | – | Sep 30, 2025 | SEC |
| Aug 13, 20253:50 PM ET | Alliancebernstein L.P. | 13G/A | 6.80%4.03M shares | +1.60 ppfrom 5.20% | Jun 30, 2025 | SEC |
| May 14, 20255:30 PM ET | Alliancebernstein L.P. | 13G | 5.20%3.07M shares | New | Mar 31, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 9.00%5.35M shares | – | Mar 31, 2025 | SEC |
| Nov 12, 2024 | Massachusetts Financial Services Co | 13G/AOld format | – | – | – | SEC |
| Nov 7, 2024 | BlackRock, Inc. | 13G/AOld format | – | – | – | SEC |
| Jun 10, 2024 | Bank of New York Mellon Corp | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2024 | Fundsmith LLPSuperinvestorFundsmith | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | Massachusetts Financial Services Co | 13GOld format | – | – | – | SEC |
| Jan 24, 20245:23 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 24, 2024 | Bank of New York Mellon Corp | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Fundsmith LLPSuperinvestorFundsmith | 13GOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 27, 2023 | Bank of New York Mellon Corp | 13G/AOld format | – | – | – | SEC |
| Jan 24, 20231:56 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Apr 8, 20229:57 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2022 | Fundsmith LLPSuperinvestorFundsmith | 13GOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 2, 2022 | Massachusetts Financial Services Co | 13G/AOld format | – | – | – | SEC |
| Feb 1, 20225:14 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 1, 2022 | Bank of New York Mellon Corp | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Fundsmith LLPSuperinvestorFundsmith | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | Massachusetts Financial Services Co | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 1, 20218:23 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 1, 2021 | Bank of New York Mellon Corp | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
7 notices from officers, directors and other affiliates planning to sell Waters Corp shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Aug 6, 202610:40 AM ET | Kuebler Christopher ADirector | 3.63K | $1.44M | Aug 6, 2026 | Fidelity Brokerage Services LLC | SEC |
| May 15, 202412:12 PM ET | Kuebler Christopher ADirector | 4.00K | $1.45M | May 15, 2024 | Fidelity Brokerage Services LLC | SEC |
| Mar 13, 202410:36 AM ET | Baddour LindaDirector | 500 | $177.8K | Mar 13, 2024 | Fidelity Brokerage Services LLC | SEC |
| Dec 15, 20234:48 PM ET | Pratt Jonathan MFormer officer | 2.12K | $678.8K | Dec 15, 2023 | Fidelity Brokerage Services LLC | SEC |
| Dec 8, 202312:51 PM ET | Pratt Jonathan MFormer officer | 2.16K | $633.0K | Dec 8, 2023 | Fidelity Brokerage Services LLC | SEC |
| Nov 15, 20231:54 PM ET | Pratt Jonathan MFormer officer | 8.76K | $2.34M | Nov 15, 2023 | Fidelity Brokerage Services LLC | SEC |
| Aug 4, 202310:13 AM ET | Kuebler Christopher ADirector | 4.00K | $1.17M | Aug 4, 2023 | Fidelity Brokerage Services LLC | SEC |