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IDXX Idexx Laboratories Inc
Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.
-$1.2M net selling - trailing 90 days
0 buyers - 1 unique sellers
Historical context: most recent complete month (2026-09) is the 23rd percentile of this ticker's monthly net P/S flow over 24 complete months. Lower percentiles are more selling; higher are more buying. P10–P90: -$6.4M to $0.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
Who is responsible
| Insider | Role | Net activity | Rows |
|---|---|---|---|
| Kingsley Lawrence D | — | -~$1.2M | 1 |
Transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| September 4, 2026 | Kingsley Lawrence D | — | S | -2203 | 532.0826 | ~$1.2M |
| March 3, 2026 | Hunt Nimrata | Executive Vice President | S | -1758 | 634.5718 | ~$1.1M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | 13 reported sale rows | 23326 | — | ~$15.3M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1669 | 652.4945 | ~$1.1M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1171 | 653.6763 | ~$0.8M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1111 | 654.6294 | ~$0.7M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1488 | 655.8498 | ~$1.0M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1343 | 656.8451 | ~$0.9M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1281 | 650.6695 | ~$0.8M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -3660 | 658.9166 | ~$2.4M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -2859 | 659.7495 | ~$1.9M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1200 | 661.0976 | ~$0.8M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1000 | 662.1567 | ~$0.7M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -2589 | 663.0439 | ~$1.7M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -2860 | 657.8438 | ~$1.9M |
| February 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | S | -1095 | 651.4866 | ~$0.7M |
| February 26, 2026 | Hunt Nimrata | Executive Vice President | S | -2693 | 661.5413 | ~$1.8M |
| February 17, 2026 | Vandebroek Sophie V. | — | 2 reported sale rows | 1464 | — | ~$0.9M |
| February 17, 2026 | Vandebroek Sophie V. | — | S | -519 | 628.56 | ~$0.3M |
| February 17, 2026 | Vandebroek Sophie V. | — | S | -945 | 628.646 | ~$0.6M |
| February 17, 2026 | Erickson Michael G | Executive Vice President | 6 reported sale rows | 5371 | — | ~$3.4M |
| February 17, 2026 | Erickson Michael G | Executive Vice President | S | -456 | 623.7582 | ~$0.3M |
| February 17, 2026 | Erickson Michael G | Executive Vice President | S | -40 | 629.8625 | ~$25K |
| February 17, 2026 | Erickson Michael G | Executive Vice President | S | -689 | 629.0906 | ~$0.4M |
| February 17, 2026 | Erickson Michael G | Executive Vice President | S | -2694 | 628.2208 | ~$1.7M |
| February 17, 2026 | Erickson Michael G | Executive Vice President | S | -1288 | 626.2564 | ~$0.8M |
| February 17, 2026 | Erickson Michael G | Executive Vice President | S | -204 | 625.2423 | ~$0.1M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | 8 reported sale rows | 11345 | — | ~$7.3M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | S | -2809 | 649.2599 | ~$1.8M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | S | -2782 | 646.2259 | ~$1.8M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | S | -1130 | 642.9974 | ~$0.7M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | S | -397 | 644.016 | ~$0.3M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | S | -2161 | 645.2512 | ~$1.4M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | S | -1060 | 647.2066 | ~$0.7M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | S | -966 | 648.7792 | ~$0.6M |
| February 10, 2026 | FENNELL GEORGE | Executive Vice President | S | -40 | 650.32 | ~$26K |
| November 7, 2025 | Hunt Nimrata | Executive Vice President | 4 reported sale rows | 9425 | — | ~$6.6M |
| November 7, 2025 | Hunt Nimrata | Executive Vice President | S | -1468 | 704.8659 | ~$1.0M |
| November 7, 2025 | Hunt Nimrata | Executive Vice President | S | -1378 | 705.5448 | ~$1.0M |
| November 7, 2025 | Hunt Nimrata | Executive Vice President | S | -5114 | 702.2017 | ~$3.6M |
| November 7, 2025 | Hunt Nimrata | Executive Vice President | S | -1465 | 703.7339 | ~$1.0M |
| August 22, 2025 | SZOSTAK M ANNE | — | S | -2187 | 647.3252 | ~$1.4M |
| August 12, 2025 | Erickson Michael G | Executive Vice President | 2 reported sale rows | 405.892 | — | ~$0.3M |
| August 12, 2025 | Erickson Michael G | Executive Vice President | S | -318 | 649.99 | ~$0.2M |
| August 12, 2025 | Erickson Michael G | Executive Vice President | S | -87.892 | 649.8507 | ~$57K |
| August 11, 2025 | Hunt Nimrata | Executive Vice President | S | -1200 | 656.5335 | ~$0.8M |
| August 8, 2025 | Underberg Sharon E. | EVP, GC & Corporate Secretary | S | -5450 | 651.6 | ~$3.6M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | 10 reported sale rows | 29260 | — | ~$18.5M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -6056 | 630.5935 | ~$3.8M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -3000 | 632.563 | ~$1.9M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -3526 | 635.1268 | ~$2.2M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -1822 | 636.1517 | ~$1.2M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -880 | 636.8083 | ~$0.6M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -660 | 639.3718 | ~$0.4M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -1095 | 626.9024 | ~$0.7M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -1525 | 628.272 | ~$1.0M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -7299 | 631.6065 | ~$4.6M |
| August 6, 2025 | MAZELSKY JONATHAN JAY | President and CEO | S | -3397 | 629.8228 | ~$2.1M |
| August 6, 2025 | Lane Michael | Executive Vice President | 3 reported sale rows | 8411 | — | ~$5.3M |
| August 6, 2025 | Lane Michael | Executive Vice President | S | -5631 | 627.5634 | ~$3.5M |
| August 6, 2025 | Lane Michael | Executive Vice President | S | -2480 | 627.9911 | ~$1.6M |
| August 6, 2025 | Lane Michael | Executive Vice President | S | -300 | 628.8866 | ~$0.2M |
| August 6, 2025 | Hunt Nimrata | Executive Vice President | 3 reported sale rows | 7143 | — | ~$4.5M |
| August 6, 2025 | Hunt Nimrata | Executive Vice President | S | -1218 | 630.6891 | ~$0.8M |
| August 6, 2025 | Hunt Nimrata | Executive Vice President | S | -3018 | 629.865 | ~$1.9M |
| August 6, 2025 | Hunt Nimrata | Executive Vice President | S | -2907 | 630.9087 | ~$1.8M |
| May 21, 2025 | SZOSTAK M ANNE | — | 2 reported sale rows | 2306 | — | ~$1.2M |
| May 21, 2025 | SZOSTAK M ANNE | — | S | -1260 | 512.3371 | ~$0.6M |
| May 21, 2025 | SZOSTAK M ANNE | — | S | -1046 | 513.74 | ~$0.5M |
| May 13, 2025 | JUNIUS DANIEL M | — | S | -2683 | 506.4097 | ~$1.4M |
| May 9, 2025 | Vandebroek Sophie V. | — | S | -1279 | 491.3411 | ~$0.6M |
| February 10, 2025 | FENNELL GEORGE | Executive Vice President | S | -9986 | 462.5337 | ~$4.6M |
| February 7, 2025 | SZOSTAK M ANNE | — | S | -3000 | 465.945 | ~$1.4M |
| November 27, 2024 | Vandebroek Sophie V. | — | S | -344 | 420.435 | ~$0.1M |
| September 6, 2024 | SZOSTAK M ANNE | — | S | -500 | 469.3723 | ~$0.2M |