| $385M | ||
| $350M | ||
| $215M | ||
| $100M | ||
| $88M | ||
| $82M |
Buys | $0 | 0 | 0 |
Sells | $73,954,467 | 17 | 100 |
| JUNIUS DANIEL M | director | 0 | $0 | 1 | $1.36M | $-1.36M |
| Vandebroek Sophie V. | director | 0 | $0 | 2 | $1.55M | $-1.55M |
| SZOSTAK M ANNE | director | 0 | $0 | 2 | $2.6M | $-2.6M |
| Underberg Sharon E. | EVP, GC & Corporate Secretary | 0 | $0 | 1 | $3.55M | $-3.55M |
| Erickson Michael G | Executive Vice President | 0 | $0 | 2 | $3.63M | $-3.63M |
| Lane Michael | Executive Vice President | 0 | $0 | 1 | $5.28M | $-5.28M |
| FENNELL GEORGE | Executive Vice President | 0 | $0 | 1 | $7.34M | $-7.34M |
| Hunt Nimrata | Executive Vice President | 0 | $0 | 5 | $14.82M | $-14.82M |
| MAZELSKY JONATHAN JAY | President and CEO | 0 | $0 | 2 | $33.83M | $-33.83M |
IDEXX Laboratories, Inc. develops, manufactures, and distributes products and services primarily for the companion animal veterinary, livestock and poultry, dairy, and water testing markets worldwide. The company operates through CAG; Water Quality Products; LPD; and Other segments. It provides point-of-care veterinary diagnostic products, including instruments, consumables, and rapid assay test kits; veterinary reference laboratory diagnostic and consulting services; practice management and diagnostic imaging systems and services for veterinarians; and health monitoring, biological materials testing, and laboratory animal diagnostic instruments and services for biomedical research community. The company also offers diagnostic and health-monitoring products for livestock, poultry, and dairy; products that test water for various microbiological contaminants; and point-of-care electrolytes and blood gas analyzers and SARS-CoV-2 RT-PCR that are used in the human point-of-care medical diagnostics market; in-clinic chemistry, blood and urine chemistry, hematology, and SediVue Dx analyzers; SNAP rapid assays test kits. In addition, it provides Colilert, Colilert-18, and Colisure tests, which detect the presence of total coliforms and E. coli in water; Enterolert, Pseudalert, Filta-Max and Filta-Max xpress, Legiolert, and Quanti-Tray products; veterinary software and services for independent veterinary clinics and corporate groups. The company markets its products through marketing, customer service, sales, and technical service groups, as well as through independent distributors and other resellers. IDEXX Laboratories, Inc. was incorporated in 1983 and is headquartered in Westbrook, Maine.
Over the last 12 months, insiders at IDEXX Laboratories, Inc. have bought $0 and sold $73.95M worth of IDEXX Laboratories, Inc. stock.
On average, over the past 5 years, insiders at IDEXX Laboratories, Inc. have bought $0 and sold $53.88M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 750 shares for transaction amount of $199,808 was made by Kingsley Lawrence D (director) on 2019‑08‑06.
| 2026-03-03 | Sale | Hunt Nimrata | Executive Vice President | 1,758 0.0022% | $634.57 | $1.12M | -4.78% | |
| 2026-02-26 | Sale | MAZELSKY JONATHAN JAY | President and CEO | 23,326 0.0291% | $657.55 | $15.34M | -7.41% | |
| 2026-02-26 | Sale | Hunt Nimrata | Executive Vice President | 2,693 0.0034% | $661.54 | $1.78M | -7.41% | |
| 2026-02-17 | Sale | Erickson Michael G | Executive Vice President | 5,371 0.0067% | $627.38 | $3.37M | +1.14% | |
| 2026-02-17 | Sale | Vandebroek Sophie V. | director | 1,464 0.0018% | $628.62 | $920,293 | +1.14% | |
| 2026-02-10 | Sale | FENNELL GEORGE | Executive Vice President | 11,345 0.0142% | $646.72 | $7.34M | -1.94% | |
| 2025-11-07 | Sale | Hunt Nimrata | Executive Vice President | 9,425 0.0132% | $703.34 | $6.63M | -2.70% | |
| 2025-08-22 | Sale | SZOSTAK M ANNE | director | 2,187 0.0027% | $647.33 | $1.42M | +0.35% | |
| 2025-08-12 | Sale | Erickson Michael G | Executive Vice President | 405.89 0.0005% | $649.96 | $263,814 | -0.75% | |
| 2025-08-11 | Sale | Hunt Nimrata | Executive Vice President | 1,200 0.0015% | $656.53 | $787,840 | -0.69% | |
| 2025-08-08 | Sale | Underberg Sharon E. | EVP, GC & Corporate Secretary | 5,450 0.0067% | $651.60 | $3.55M | -1.56% | |
| 2025-08-06 | Sale | MAZELSKY JONATHAN JAY | President and CEO | 29,260 0.0358% | $631.98 | $18.49M | +3.88% | |
| 2025-08-06 | Sale | Hunt Nimrata | Executive Vice President | 7,143 0.0087% | $630.43 | $4.5M | +3.88% | |
| 2025-08-06 | Sale | Lane Michael | Executive Vice President | 8,411 0.0102% | $627.74 | $5.28M | +3.88% | |
| 2025-05-21 | Sale | SZOSTAK M ANNE | director | 2,306 0.0029% | $512.97 | $1.18M | +27.80% | |
| 2025-05-13 | Sale | JUNIUS DANIEL M | director | 2,683 0.0033% | $506.41 | $1.36M | +25.59% | |
| 2025-05-09 | Sale | Vandebroek Sophie V. | director | 1,279 0.0016% | $491.34 | $628,425 | +29.99% | |
| 2025-02-10 | Sale | FENNELL GEORGE | Executive Vice President | 9,986 0.0123% | $462.53 | $4.62M | +34.92% | |
| 2025-02-07 | Sale | SZOSTAK M ANNE | director | 3,000 0.0037% | $465.94 | $1.4M | +36.08% | |
| 2024-11-27 | Sale | Vandebroek Sophie V. | director | 344 0.0004% | $420.44 | $144,630 | +22.84% |
| MAZELSKY JONATHAN JAY | President and CEO | 83606 0.1047% | $47.97M | 0 | 13 | |
| Hunt Nimrata | Executive Vice President | 18141 0.0227% | $10.41M | 0 | 8 | |
| Erickson Michael G | Executive Vice President | 12693 0.0159% | $7.28M | 0 | 2 | |
| FENNELL GEORGE | Executive Vice President | 9823 0.0123% | $5.64M | 0 | 3 | |
| Lane Michael | Executive Vice President | 7132 0.0089% | $4.09M | 0 | 11 | |
| Underberg Sharon E. | EVP, GC & Corporate Secretary | 6156 0.0077% | $3.53M | 0 | 1 | |
| JUNIUS DANIEL M | director | 3304 0.0041% | $1.9M | 1 | 10 | +1.79% |
| Vandebroek Sophie V. | director | 648 0.0008% | $371,835.36 | 1 | 9 | +18.18% |
| SZOSTAK M ANNE | director | 262 0.0003% | $150,340.84 | 4 | 12 | +20.21% |
| AYERS JONATHAN W | director | 135547 0.1697% | $77.78M | 1 | 124 | +36.54% |
| Williams Michael J PhD | Executive Vice President | 41967 0.0526% | $24.08M | 0 | 19 | |
| FRATONI S SAM | Corporate Vice President | 41467 0.0519% | $23.79M | 0 | 13 | |
| END WILLIAM T | director | 31786 0.0398% | $18.24M | 0 | 17 | |
| MCKEON BRIAN P | EVP, CFO and Treasurer | 29718 0.0372% | $17.05M | 1 | 18 | |
| CRAIG THOMAS | director | 24283 0.0304% | $13.93M | 1 | 13 | +17.86% |
| TONELLI QUENTIN J | Corporate Vice President | 21383 0.0268% | $12.27M | 0 | 14 | |
| WALLEN WILLIAM C | Senior VP & CSO | 18668 0.0234% | $10.71M | 2 | 13 | +14.74% |
| NAQUI ALI | Corporate Vice President | 17513 0.0219% | $10.05M | 0 | 17 | |
| TWIGGE GIOVANI | Senior Vice President | 17128 0.0215% | $9.83M | 0 | 18 | |
| HENDERSON REBECCA M | director | 14696 0.0184% | $8.43M | 1 | 17 | |
| HULSY ROBERT S | Corporate Vice President | 12352 0.0155% | $7.09M | 0 | 11 | |
| POLLOCK LOUIS W | Senior Vice President | 11577 0.0145% | $6.64M | 0 | 2 | |
| POLEWACZYK JAMES F | Executive Vice President | 10711 0.0134% | $6.15M | 0 | 8 | |
| RAINES MERILEE | Executive VP & CFO | 9800 0.0123% | $5.62M | 0 | 25 | |
| POWERS JOHNNY D | Executive Vice President | 9099 0.0114% | $5.22M | 0 | 4 | |
| Kingsley Lawrence D | director | 7778 0.0097% | $4.46M | 5 | 0 | +14.34% |
| Turner Kathy V | Senior Vice President | 7380 0.0092% | $4.23M | 0 | 14 | |
| BROWN WILLIAM E III | Executive Vice President | 7259 0.0091% | $4.17M | 0 | 1 | |
| Dupree Thomas J | Corporate Vice President | 5683 0.0071% | $3.26M | 0 | 2 | |
| GOODSPEED WILLIAM B. | Corporate Vice President | 4620 0.0058% | $2.65M | 0 | 1 | |
| Studer Jacqueline | CVP, Gen. Counsel & Secretary | 4389 0.0055% | $2.52M | 0 | 7 | |
| JOHNSON BARRY C | director | 3560 0.0045% | $2.04M | 0 | 3 | |
| MURRAY ROBERT J | director | 3500 0.0044% | $2.01M | 6 | 0 | +18.78% |
| DEADY CONAN R | Corp VP and General Counsel | 2225 0.0028% | $1.28M | 0 | 31 | |
| VUMBACCO JOSEPH V | director | 1000 0.0013% | $573,820.00 | 1 | 0 | +6.89% |
| Meyaard Daniel V | Corporate Vice President | 980 0.0012% | $562,343.60 | 1 | 0 | +22.71% |
| GOOD MARY L PHD | director | 276 0.0003% | $158,374.32 | 0 | 2 | |
| Claflin Bruce L. | director | 161 0.0002% | $92,385.02 | 2 | 4 | +4.5% |
| Increased Positions | 679 | +48.57% | 11M | +15.43% |
| Decreased Positions | 579 | -41.42% | 6M | -7.66% |
| New Positions | 186 | New | 6M | New |
| Sold Out Positions | 82 | Sold Out | 491,773 | Sold Out |
| Total Postitions | 1,498 | +7.15% | 78M | +7.77% |
| Vanguard Group Inc | $6.67M | 12.45% | 9.96M | +86,040 | +0.87% | 2025-09-30 |
| Blackrock, Inc. | $5.5M | 10.26% | 8.21M | -168,971 | -2.02% | 2025-09-30 |
| State Street Corp | $2.36M | 4.4% | 3.52M | -36,754 | -1.03% | 2025-09-30 |
| Fundsmith Llp | $1.75M | 3.26% | 2.61M | -28,832 | -1.09% | 2025-09-30 |
| Geode Capital Management, Llc | $1.67M | 3.12% | 2.5M | +33,386 | +1.35% | 2025-09-30 |
| Bank Of New York Mellon Corp | $1.38M | 2.57% | 2.06M | +605,290 | +41.7% | 2025-09-30 |
| Bamco Inc /Ny/ | $1.26M | 2.36% | 1.88M | -148,491 | -7.3% | 2025-09-30 |
| Morgan Stanley | $1.09M | 2.03% | 1.62M | -40,836 | -2.46% | 2025-09-30 |
| Invesco Ltd. | $884,563.00 | 1.65% | 1.32M | +161,782 | +13.96% | 2025-09-30 |
| Principal Financial Group Inc | $881,521.00 | 1.65% | 1.32M | +187,967 | +16.67% | 2025-09-30 |