IDEXX Laboratories
Provides veterinary diagnostics, reference laboratories, and practice software for connected clinical workflows.
$554.99
After-hours close+0.51 (+0.09%)
At close$554.48(+1.72%)
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Breakdown13F · Form 4
Institutions 173.16%Insiders 0.21%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 78.88M · Float 78.58M · 99.6% free float
Institutions13F, as of Jun 30, 2026
1,323 holders · 136.59M shares · 121 new positions · 591 increased · 508 reduced · 134 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 8.17M | 10.36% | −195.4K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 5.15M | 6.53% | −30.3K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 3.90M | 4.94% | −14.3K | Aug 13, 2026 |
| State Street Corp | 3.75M | 4.75% | +74.5K | Aug 7, 2026 |
| Invesco Ltd. | 3.61M | 4.58% | +1.94M | Aug 14, 2026 |
| Geode Capital Management, LLC | 2.56M | 3.25% | −98.1K | Aug 12, 2026 |
| Bamco Inc /NY/ | 1.98M | 2.51% | +343.4K | Aug 14, 2026 |
| Morgan Stanley | 1.36M | 1.72% | +40.1K | Aug 13, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 9.40% | 7.60M | 13G | Apr 17, 2025 ↗ |
| Vanguard Capital Management | 7.51% | 5.98M | 13G | Apr 30, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Jonathan Jay Mazelsky | director, officer: President and CEO | 83.8K | 0.11% | Mar 2, 2026 |
| Nimrata Hunt | officer: Executive Vice President | 18.1K | 0.02% | Mar 5, 2026 |
| Michael G. Erickson | officer: Executive Vice President | 13.4K | 0.02% | Feb 19, 2026 |
| George Fennell | officer: Executive Vice President | 10.4K | 0.01% | Jun 2, 2026 |
| Lawrence D. Kingsley | director | 9.5K | 0.01% | May 11, 2026 |
| Michael Lane | officer: Executive Vice President | 7.4K | 0.01% | Feb 17, 2026 |
| Sharon E. Underberg | officer: EVP, GC & Corporate Secretary | 7.1K | 0.01% | Mar 5, 2026 |
| Andrew Emerson | officer: EVP, CFO and Treasurer | 4.4K | 0.01% | Aug 24, 2026 |
| Daniel M. Junius | director | 3.6K | 0.00% | May 11, 2026 |
| Michael Perkins Johnson | officer: Executive Vice President | 2.6K | 0.00% | Feb 17, 2026 |
35 people have not refiled in the last 18 months (991.3K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Mar 3, 2026 | Nimrata Huntofficer: Executive Vice President | Sale | 1,758 | $634.57 | 18,141 |
| Feb 26, 2026 | Jonathan Jay Mazelskydirector, officer: President and CEO | Sale · 13 lots | 23,326 | $657.55 | 83,606 |
| Feb 26, 2026 | Nimrata Huntofficer: Executive Vice President | Sale | 2,693 | $661.54 | 19,899 |
| Feb 17, 2026 | Sophie V. Vandebroekdirector | Sale · 2 lots | 1,464 | $628.62 | 648 |
| Feb 17, 2026 | Michael G. Ericksonofficer: Executive Vice President | Sale · 6 lots | 5,371 | $627.38 | 12,693 |
| Feb 10, 2026 | George Fennellofficer: Executive Vice President | Sale · 8 lots | 11,345 | $646.72 | 9,823 |
| Nov 7, 2025 | Nimrata Huntofficer: Executive Vice President | Sale · 4 lots | 9,425 | $703.34 | 21,149 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. Ro Khanna · CA17 | Purchase | $1,001 – $15,000 | Spouse | Apr 13, 2026 | May 13, 2026 ↗ |