IDEXX LABORATORIES INC /DE — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Hunt Nimrata | Executive Vice President | Sale | 5,114 | $702.20 | $3,591,051 | 25,460 | Nov 7, 2025 |
| HOOLEY JOSEPH L | — | Award / Grant | 39 | $628.54 | $24,513 | 39 | Oct 30, 2025 |
| Smith Martin Alexander | Executive Vice President | Option Exercise | 18 | — | — | 1,439 | Sep 1, 2025 |
| SZOSTAK M ANNE | — | Sale | 2,187 | $647.33 | $1,415,711 | 262 | Aug 22, 2025 |
| MAZELSKY JONATHAN JAY | President and CEO | Gift | 1,051 | — | — | 82,443 | Aug 15, 2025 |
| Erickson Michael G | Executive Vice President | Sale | 318 | $649.99 | $206,697 | 11,375 | Aug 12, 2025 |
| Hunt Nimrata | Executive Vice President | Option Exercise | 483 | $206.94 | $99,952 | 17,850 | Aug 12, 2025 |
| Underberg Sharon E. | EVP, GC & Corporate Secretary | Option Exercise | 183 | $544.08 | $99,567 | 6,339 | Aug 8, 2025 |
| MAZELSKY JONATHAN JAY | President and CEO | Option Exercise | 183 | $598.49 | $109,524 | 83,494 | Aug 8, 2025 |
| Emerson Andrew | EVP, CFO and Treasurer | Tax Withholding | 402 | $650.06 | $261,324 | 3,871 | Aug 7, 2025 |
| Hunt Nimrata | Executive Vice President | Option Exercise | 5,711 | $206.94 | $1,181,834 | 25,150 | Aug 6, 2025 |
| MAZELSKY JONATHAN JAY | President and CEO | Sale | 7,299 | $631.61 | $4,610,121 | 93,199 | Aug 6, 2025 |
| Lane Michael | Executive Vice President | Sale | 5,631 | $627.56 | $3,533,790 | 9,912 | Aug 6, 2025 |
| Johnson Michael Perkins | Executive Vice President | Option Exercise | 3,382 | — | — | 3,864 | Jun 1, 2025 |
| SZOSTAK M ANNE | — | Sale | 1,260 | $512.34 | $645,548 | 1,801 | May 21, 2025 |
| JUNIUS DANIEL M | — | Option Exercise | 1,404 | $245.79 | $345,089 | 4,708 | May 13, 2025 |
| Vandebroek Sophie V. | — | Option Exercise | 1,279 | $283.59 | $362,712 | 2,446 | May 9, 2025 |
| Vandebroek Sophie V. | — | Option Exercise | 262 | — | — | 1,167 | May 6, 2025 |
| SZOSTAK M ANNE | — | Option Exercise | 262 | — | — | 262 | May 6, 2025 |
| Kingsley Lawrence D | — | Option Exercise | 84 | — | — | 9,229 | May 6, 2025 |
| JUNIUS DANIEL M | — | Option Exercise | 262 | — | — | 3,304 | May 6, 2025 |
| ESSIG STUART | — | Option Exercise | 262 | — | — | 2,236 | May 6, 2025 |
| MCKEON BRIAN P | EVP, CFO and Treasurer | Tax Withholding | 569 | $444.53 | $252,938 | 31,550 | Feb 14, 2025 |
| Underberg Sharon E. | EVP, GC & Corporate Secretary | Tax Withholding | 219 | $444.53 | $97,352 | 6,127 | Feb 14, 2025 |
| Smith Martin Alexander | Executive Vice President | Tax Withholding | 374 | $444.53 | $166,254 | 1,392 | Feb 14, 2025 |
| Schreck Michael | Executive Vice President | Tax Withholding | 441 | $444.53 | $196,038 | 1,956 | Feb 14, 2025 |
| MAZELSKY JONATHAN JAY | President and CEO | Option Exercise | 958 | — | — | 83,405 | Feb 14, 2025 |
| Lane Michael | Executive Vice President | Option Exercise | 160 | — | — | 6,650 | Feb 14, 2025 |
| Johnson Michael Perkins | Executive Vice President | Tax Withholding | 118 | $444.53 | $52,455 | 467 | Feb 14, 2025 |
| Hunt Nimrata | Executive Vice President | Option Exercise | 204 | — | — | 12,087 | Feb 14, 2025 |
| FENNELL GEORGE | Executive Vice President | Tax Withholding | 133 | $444.53 | $59,122 | 8,347 | Feb 14, 2025 |
| Erickson Michael G | Executive Vice President | Tax Withholding | 177 | $444.53 | $78,682 | 21,216 | Feb 14, 2025 |
| Erickson Michael G | Executive Vice President | Option Exercise | 1,544 | $67.85 | $104,760 | 20,836 | Feb 11, 2025 |
| FENNELL GEORGE | Executive Vice President | Option Exercise | 1,256 | $79.54 | $99,902 | 8,176 | Feb 10, 2025 |
| SZOSTAK M ANNE | — | Sale | 3,000 | $465.95 | $1,397,850 | 3,061 | Feb 7, 2025 |
| Vandebroek Sophie V. | — | Gift | 224 | — | — | 1,249 | Nov 27, 2024 |
| AYERS JONATHAN W | — | Gift | 302,179 | — | — | — | Sep 6, 2024 |
| SZOSTAK M ANNE | — | Gift | 500 | — | — | 6,061 | Sep 6, 2024 |
| Smith Martin Alexander | Executive Vice President | Tax Withholding | 5 | $481.33 | $2,407 | 510 | Sep 1, 2024 |
| Schreck Michael | Executive Vice President | Tax Withholding | 48 | $481.33 | $23,104 | 913 | Sep 1, 2024 |
| MCKEON BRIAN P | EVP, CFO and Treasurer | Tax Withholding | 117 | $455.08 | $53,244 | 30,932 | Aug 5, 2024 |
| MAZELSKY JONATHAN JAY | President and CEO | Option Exercise | 384 | — | — | 81,903 | Aug 5, 2024 |
| Claflin Bruce L. | — | Sale | 200 | $540.80 | $108,160 | 161 | May 17, 2024 |
| SZOSTAK M ANNE | — | Gift | 257 | — | — | — | May 8, 2024 |
| Vandebroek Sophie V. | — | Option Exercise | 257 | — | — | 1,473 | May 6, 2024 |
| Kingsley Lawrence D | — | Option Exercise | 82 | — | — | 8,883 | May 6, 2024 |
| ESSIG STUART | — | Option Exercise | 257 | — | — | 1,974 | May 6, 2024 |
| COLLINS Asha | — | Option Exercise | 257 | — | — | 779 | May 6, 2024 |
| Britt Irene Chang | — | Option Exercise | 208 | — | — | 208 | May 6, 2024 |
| AYERS JONATHAN W | — | Option Exercise | 257 | — | — | 265,651 | May 6, 2024 |