IDXX Insider Transactions
1,072 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–100; provenance stays internal.
IDXX insiders transaction timeline
PurchaseSale
| Insider profile | Role | Date | Transaction | Shares | Price |
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| Hunt Nimrata | Executive Vice President | 2026-03-03 | Sale | 1,758.0 | $634.57 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 2,589.0 | $663.04 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,000.0 | $662.16 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,200.0 | $661.1 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 2,859.0 | $659.75 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 3,660.0 | $658.92 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 2,860.0 | $657.84 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,343.0 | $656.85 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,488.0 | $655.85 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,111.0 | $654.63 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,171.0 | $653.68 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,669.0 | $652.49 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,095.0 | $651.49 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2026-02-26 | Sale | 1,281.0 | $650.67 |
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| Hunt Nimrata | Executive Vice President | 2026-02-26 | Sale | 2,693.0 | $661.54 |
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| Erickson Michael G | Executive Vice President | 2026-02-17 | Sale | 40.0 | $629.86 |
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| Erickson Michael G | Executive Vice President | 2026-02-17 | Sale | 689.0 | $629.09 |
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| Erickson Michael G | Executive Vice President | 2026-02-17 | Sale | 2,694.0 | $628.22 |
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| Erickson Michael G | Executive Vice President | 2026-02-17 | Sale | 1,288.0 | $626.26 |
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| Erickson Michael G | Executive Vice President | 2026-02-17 | Sale | 204.0 | $625.24 |
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| Erickson Michael G | Executive Vice President | 2026-02-17 | Sale | 456.0 | $623.76 |
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| Vandebroek Sophie V. | Director | 2026-02-17 | Sale | 519.0 | $628.56 |
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| Vandebroek Sophie V. | Director | 2026-02-17 | Sale | 945.0 | $628.65 |
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| FENNELL GEORGE | Executive Vice President | 2026-02-10 | Sale | 40.0 | $650.32 |
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| FENNELL GEORGE | Executive Vice President | 2026-02-10 | Sale | 2,809.0 | $649.26 |
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| FENNELL GEORGE | Executive Vice President | 2026-02-10 | Sale | 966.0 | $648.78 |
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| FENNELL GEORGE | Executive Vice President | 2026-02-10 | Sale | 1,060.0 | $647.21 |
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| FENNELL GEORGE | Executive Vice President | 2026-02-10 | Sale | 2,782.0 | $646.23 |
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| FENNELL GEORGE | Executive Vice President | 2026-02-10 | Sale | 2,161.0 | $645.25 |
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| FENNELL GEORGE | Executive Vice President | 2026-02-10 | Sale | 397.0 | $644.02 |
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| FENNELL GEORGE | Executive Vice President | 2026-02-10 | Sale | 1,130.0 | $643.0 |
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| Hunt Nimrata | Executive Vice President | 2025-11-07 | Sale | 1,378.0 | $705.54 |
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| Hunt Nimrata | Executive Vice President | 2025-11-07 | Sale | 1,468.0 | $704.87 |
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| Hunt Nimrata | Executive Vice President | 2025-11-07 | Sale | 1,465.0 | $703.73 |
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| Hunt Nimrata | Executive Vice President | 2025-11-07 | Sale | 5,114.0 | $702.2 |
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| SZOSTAK M ANNE | Director | 2025-08-22 | Sale | 2,187.0 | $647.33 |
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| Erickson Michael G | Executive Vice President | 2025-08-12 | Sale | 87.89 | $649.85 |
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| Erickson Michael G | Executive Vice President | 2025-08-12 | Sale | 318.0 | $649.99 |
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| Hunt Nimrata | Executive Vice President | 2025-08-11 | Sale | 1,200.0 | $656.53 |
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| Underberg Sharon E. | EVP, GC & Corporate Secretary | 2025-08-08 | Sale | 5,450.0 | $651.6 |
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| Hunt Nimrata | Executive Vice President | 2025-08-06 | Sale | 1,218.0 | $630.69 |
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| Hunt Nimrata | Executive Vice President | 2025-08-06 | Sale | 2,907.0 | $630.91 |
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| Hunt Nimrata | Executive Vice President | 2025-08-06 | Sale | 3,018.0 | $629.87 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 660.0 | $639.37 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 880.0 | $636.81 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 1,822.0 | $636.15 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 3,526.0 | $635.13 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 3,000.0 | $632.56 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 7,299.0 | $631.61 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 6,056.0 | $630.59 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 3,397.0 | $629.82 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 1,525.0 | $628.27 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2025-08-06 | Sale | 1,095.0 | $626.9 |
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| Lane Michael | Executive Vice President | 2025-08-06 | Sale | 300.0 | $628.89 |
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| Lane Michael | Executive Vice President | 2025-08-06 | Sale | 2,480.0 | $627.99 |
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| Lane Michael | Executive Vice President | 2025-08-06 | Sale | 5,631.0 | $627.56 |
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| SZOSTAK M ANNE | Director | 2025-05-21 | Sale | 1,260.0 | $512.34 |
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| SZOSTAK M ANNE | Director | 2025-05-21 | Sale | 1,046.0 | $513.74 |
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| JUNIUS DANIEL M | Director | 2025-05-13 | Sale | 2,683.0 | $506.41 |
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| Vandebroek Sophie V. | Director | 2025-05-09 | Sale | 1,279.0 | $491.34 |
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| FENNELL GEORGE | Executive Vice President | 2025-02-10 | Sale | 9,986.0 | $462.53 |
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| SZOSTAK M ANNE | Director | 2025-02-07 | Sale | 3,000.0 | $465.95 |
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| Vandebroek Sophie V. | Director | 2024-11-27 | Sale | 344.0 | $420.44 |
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| SZOSTAK M ANNE | Director | 2024-09-06 | Sale | 500.0 | $469.37 |
|---|
| Claflin Bruce L. | Director | 2024-05-17 | Sale | 200.0 | $540.8 |
|---|
| POLEWACZYK JAMES F | Executive Vice President | 2024-03-06 | Sale | 680.0 | $559.33 |
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| POLEWACZYK JAMES F | Executive Vice President | 2024-03-06 | Sale | 3,290.0 | $558.88 |
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| POLEWACZYK JAMES F | Executive Vice President | 2024-03-06 | Sale | 4,134.0 | $557.94 |
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| Vandebroek Sophie V. | Director | 2024-03-05 | Sale | 1,404.0 | $562.98 |
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| FENNELL GEORGE | SVP, Chief Revenue Officer | 2024-02-08 | Sale | 412.0 | $575.8 |
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| FENNELL GEORGE | SVP, Chief Revenue Officer | 2024-02-08 | Sale | 3,173.0 | $575.02 |
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| FENNELL GEORGE | SVP, Chief Revenue Officer | 2024-02-08 | Sale | 1,125.0 | $573.98 |
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| FENNELL GEORGE | SVP, Chief Revenue Officer | 2024-02-08 | Sale | 2,279.0 | $572.78 |
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| FENNELL GEORGE | SVP, Chief Revenue Officer | 2024-02-08 | Sale | 1,209.0 | $572.14 |
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| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 681.0 | $572.8 |
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| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 7,128.0 | $571.84 |
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| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 5,675.0 | $570.97 |
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| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 3,912.0 | $569.91 |
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| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 1,469.0 | $568.84 |
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| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 1,564.0 | $567.35 |
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| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 701.0 | $566.53 |
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| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 1,581.0 | $564.98 |
|---|
| MCKEON BRIAN P | EVP, CFO and Treasurer | 2024-02-07 | Sale | 615.0 | $563.82 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2024-02-07 | Sale | 705.0 | $575.48 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2024-02-07 | Sale | 1,353.0 | $574.75 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2024-02-07 | Sale | 462.0 | $573.19 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2024-02-07 | Sale | 4,124.0 | $572.53 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2024-02-07 | Sale | 5,356.0 | $571.71 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-12-07 | Sale | 3,940.0 | $523.56 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-12-07 | Sale | 1,202.0 | $522.31 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-12-07 | Sale | 3,378.0 | $521.0 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-12-07 | Sale | 3,116.0 | $520.19 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2023-12-04 | Sale | 1,324.0 | $513.51 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2023-12-04 | Sale | 5,804.0 | $512.95 |
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| MAZELSKY JONATHAN JAY | President and CEO | 2023-08-31 | Sale | 13,424.0 | $512.01 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-08-29 | Sale | 2,887.0 | $511.22 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-08-29 | Sale | 7,473.0 | $511.03 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-08-29 | Sale | 3,318.0 | $510.47 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-08-29 | Sale | 6,186.0 | $510.38 |
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| POLEWACZYK JAMES F | Executive Vice President | 2023-08-29 | Sale | 2,545.0 | $509.32 |
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