IDXX (Idexx Laboratories Inc)
Insider Trading Activity
Every open-market purchase and sale reported by IDXX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-24 | Andrew Emerson | EVP, CFO and Treasurer | MIXED | — | — |
| 2026-08-03 | JOSEPH L HOOLEY | Director | A | — | — |
| 2026-06-02 | GEORGE FENNELL | Executive Vice President | MIXED | — | — |
| 2026-05-14 | Irene Chang Britt | Director | A | — | — |
| 2026-05-14 | Bruce L. Claflin | Director | A | — | — |
| 2026-05-14 | STUART ESSIG | Director | A | — | — |
| 2026-05-14 | JOSEPH L HOOLEY | Director | A | — | — |
| 2026-05-14 | DANIEL M JUNIUS | Director | A | — | — |
| 2026-05-14 | Lawrence D Kingsley | Director | A | — | — |
| 2026-05-14 | Karen Peacock | Director | A | — | — |
| 2026-05-14 | SAM SAMAD | Director | A | — | — |
| 2026-05-14 | Sophie V. Vandebroek | Director | A | — | — |
| 2026-05-11 | JOSEPH L HOOLEY | Director | M | — | — |
| 2026-05-11 | DANIEL M JUNIUS | Director | M | — | — |
| 2026-05-11 | Lawrence D Kingsley | Director | M | — | — |
| 2026-05-11 | Karen Peacock | Director | M | — | — |
| 2026-05-11 | M ANNE SZOSTAK | Director | M | — | — |
| 2026-05-11 | Sophie V. Vandebroek | Director | M | — | — |
| 2026-05-04 | JOSEPH L HOOLEY | Director | A | — | — |
| 2026-03-05 | Nimrata Hunt | Executive Vice President | Sell | — | — |
| 2026-03-05 | Sharon E. Underberg | EVP, GC & Corporate Secretary | M | — | — |
| 2026-03-03 | Michael G Erickson | Executive Vice President | A | — | — |
| 2026-03-02 | JONATHAN JAY MAZELSKY | President and CEO | MIXED | — | — |
| 2026-02-27 | Nimrata Hunt | Executive Vice President | Sell | — | — |
| 2026-02-19 | Sophie V. Vandebroek | Director | MIXED | — | — |
| 2026-02-19 | Michael G Erickson | Executive Vice President | MIXED | — | — |
| 2026-02-17 | Andrew Emerson | EVP, CFO and Treasurer | MIXED | — | — |
| 2026-02-17 | Michael G Erickson | Executive Vice President | MIXED | — | — |
| 2026-02-17 | GEORGE FENNELL | Executive Vice President | MIXED | — | — |
| 2026-02-17 | Nimrata Hunt | Executive Vice President | MIXED | — | — |
| 2026-02-17 | Michael Perkins Johnson | Executive Vice President | MIXED | — | — |
| 2026-02-17 | Michael Lane | Executive Vice President | MIXED | — | — |
| 2026-02-17 | JONATHAN JAY MAZELSKY | President and CEO | MIXED | — | — |
| 2026-02-17 | Michael Schreck | Executive Vice President | MIXED | — | — |
| 2026-02-17 | Martin Alexander Smith | Executive Vice President | MIXED | — | — |
| 2026-02-17 | Sharon E. Underberg | EVP, GC & Corporate Secretary | MIXED | — | — |
| 2026-02-11 | GEORGE FENNELL | Executive Vice President | MIXED | — | — |
| 2026-02-03 | JOSEPH L HOOLEY | Director | A | — | — |
| 2025-12-03 | Karen Peacock | Director | A | — | — |
| 2025-11-10 | Nimrata Hunt | Executive Vice President | MIXED | — | — |
| 2025-11-03 | JOSEPH L HOOLEY | Director | A | — | — |
| 2025-09-04 | JONATHAN JAY MAZELSKY | President and CEO | G | — | — |
| 2025-09-03 | JOSEPH L HOOLEY | Director | A | — | — |
| 2025-09-03 | Martin Alexander Smith | Executive Vice President | MIXED | — | — |
| 2025-08-26 | M ANNE SZOSTAK | Director | MIXED | — | — |
| 2025-08-14 | Michael G Erickson | Executive Vice President | Sell | — | — |
| 2025-08-13 | Nimrata Hunt | Executive Vice President | MIXED | — | — |
| 2025-08-12 | JONATHAN JAY MAZELSKY | President and CEO | M | — | — |
| 2025-08-12 | Sharon E. Underberg | EVP, GC & Corporate Secretary | MIXED | — | — |
| 2025-08-11 | Andrew Emerson | EVP, CFO and Treasurer | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | President and CEO | 104,556 | — |
| — | Corporate Vice President | 102,312 | — |
| — | Corporate Vice President | 94,332 | — |
| — | Director | 79,694 | — |
| — | Corporate Vice President | 60,948 | — |
| — | Executive Vice President | 59,113 | — |
| — | Corporate Vice President | 55,328 | — |
| — | Corporate Vice President | 54,534 | — |
| — | EVP, CFO and Treasurer | 49,599 | — |
| — | Executive VP & CFO | 39,332 | — |
| — | Senior VP & CSO | 38,660 | — |
| — | Director | 35,651 | — |
| — | Executive Vice President | 34,518 | — |
| — | Director | 31,786 | — |
| — | Executive Vice President | 26,441 | — |
| — | Corporate Vice President | 25,720 | — |
| — | Director | 24,471 | — |
| — | Senior Vice President | 20,329 | — |
| — | Executive Vice President | 18,300 | — |
| — | Director | 17,742 | — |
| — | Executive Vice President | 15,092 | — |
| — | Executive Vice President | 14,681 | — |
| — | Director | 14,552 | — |
| — | Director | 13,484 | — |
| — | Executive Vice President | 10,433 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the IDXX quote page; the site-wide leaderboard is on the insider transactions hub.