IDEXX Laboratories Inc
IDXX- Exchange
- Nasdaq
- Industry
- In Vitro & In Vivo Diagnostic Substances
- SEC CIK
- 0000874716
In the last 90 days, IDEXX Laboratories Inc insiders filed 0 open-market purchases and 1 sale; 1,306 institutions reported holding it in 13F filings for Q2 2026, worth $39.1B in total; 3 superinvestors hold it, including Fundsmith and Weitz Investment Management.
Holders of 5% or more of IDXX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of IDEXX Laboratories Inc, 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 | 9.40%7.60M shares | – | Apr 17, 20251 filing | Apr 17, 2025 | SEC |
| Vanguard Capital Management LLC | 13G | 7.51%5.98M 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
20 Schedule 13D and 13G filings on IDEXX Laboratories Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Apr 30, 202610:29 AM ET | Vanguard Capital Management LLC | 13G | 7.51%5.98M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 20269:52 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 9.40%7.60M shares | – | Mar 31, 2025 | SEC |
| Nov 12, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Nov 4, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 24, 20249:46 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Dec 8, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Fundsmith LLPSuperinvestorFundsmith | 13GOld format | – | – | – | SEC |
| Feb 14, 2023 | Fundsmith LLPSuperinvestorFundsmith | 13GOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20238:52 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 20, 20233:00 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 27, 202211:00 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 25, 20223:03 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Sep 9, 20214:20 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Fundsmith LLPSuperinvestorFundsmith | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 29, 20219:56 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
17 notices from officers, directors and other affiliates planning to sell IDEXX Laboratories Inc shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Mar 6, 20245:56 PM ET | Polewaczyk James FOfficer | 8.10K | $4.66M | Mar 6, 2024 | MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICES | SEC |
| Mar 5, 20245:36 PM ET | Vandebroek Sophie V.Director | 1.40K | $790.4K | Mar 5, 2024 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Feb 8, 20245:26 PM ET | Fennell GeorgeOfficer | 8.20K | $4.32M | Feb 8, 2024 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Feb 7, 20247:01 PM ET | Mazelsky Jonathan JayOfficer | 12.0K | $6.18M | Feb 7, 2024 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Feb 7, 20246:17 PM ET | McKeon Brian POfficer | 23.3K | $12.0M | Feb 7, 2024 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Dec 7, 20235:01 PM ET | Polewaczyk James FOfficer | 11.6K | $5.62M | Dec 7, 2023 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Dec 4, 20235:02 PM ET | Mazelsky Jonathan JayOfficer | 7.13K | $3.36M | Dec 4, 2023 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Aug 31, 20236:02 PM ET | Mazelsky Jonathan JayOfficer | 13.4K | $6.87M | Aug 31, 2023 | ETRADE FINANCIAL CORPORATION | SEC |
| Aug 29, 20235:25 PM ET | Polewaczyk James FOfficer | 22.9K | $11.6M | Aug 29, 2023 | ETRADE FINANCIAL CORPORATION | SEC |
| Aug 3, 20235:57 PM ET | Lane MichaelOfficer | 16.0K | $8.17M | Aug 3, 2023 | ETRADE FINANCIAL CORPORATION | SEC |
| May 19, 20235:02 PM ET | Ayers Jonathan WDirector | 10.0K | $4.92M | May 19, 2023 | ETRADE FINANCIAL CORPORATION | SEC |
| May 18, 20237:55 PM ET | Ayers Jonathan WDirector | 10.0K | $4.89M | May 18, 2023 | ETRADE FINANCIAL COPORATION | SEC |
| May 16, 20236:43 PM ET | Turner Kathy VOfficer | 2.51K | $1.24M | May 16, 2023 | ETRADE FINANCIAL CORPORATION | SEC |
| May 10, 20237:20 PM ET | Turner Kathy VOfficer | 4.27K | $2.08M | May 10, 2023 | ETRADE FINANCIAL CORPORATION | SEC |
| May 5, 20235:38 PM ET | Lane MichaelOfficer | 1.00K | $484.0K | May 5, 2023 | ETRADE FINANCIAL CORPORATION | SEC |
| May 5, 20234:53 PM ET | Margaret Anne SzostakDirector | 2.00K | $957.7K | May 5, 2023 | Goldman Sachs & Co. LLC | SEC |
| May 4, 20235:57 PM ET | Vandebroek Sophie V.Officer | 2.19K | $1.03M | May 4, 2023 | ETRADE FINANCIAL CORPORATION | SEC |