IDEXX Laboratories Insider Trades
NASDAQ: IDXXHealth CareBiotechnology: In Vitro & In Vivo Diagnostic SubstancesUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Last 12 months
- Purchases
- 0 · $0
- Sales
- 24 · $23.70M
- Shares bought / sold
- 0 / 36.81K
- Net activity
- Net selling $23.7 million
IDEXX Laboratories insider activity
Over the last 12 months, IDEXX Laboratories insiders reported 100 transactions on SEC Form 4: 0 open-market purchases and 24 sales. Insiders bought $0 and sold $23.7 million worth of stock, for net insider selling of $23.7 million. The largest seller was MAZELSKY JONATHAN JAY, with $15.3 million in reported sales.
The most recent filing shows Kingsley Lawrence D (Director) reporting a transaction in 2,203 shares at $114.17 on Sep 4, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put IDXX's ownership changes in context.
Summary generated from market data by MetaCap's automated system. Methodology
IDXX insider transactions
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Sep 4, 2026 | Kingsley Lawrence DDirector | Sale | 2,203 | $1.17M | Form 4 |
| Sep 4, 2026 | Kingsley Lawrence DDirector | Option exercise | 2,203 | $251.52K | Form 4 |
| Aug 20, 2026 | Emerson AndrewEVP, CFO and Treasurer | Tax withholding | 86 | — | Form 4 |
| Aug 20, 2026 | Emerson AndrewEVP, CFO and Treasurer | Option exercise | 265 | $47.24K | Form 4 |
| Jul 30, 2026 | HOOLEY JOSEPH LDirector | Award | 49 | $27.38K | Form 4 |
| Jun 1, 2026 | FENNELL GEORGEExecutive Vice President | Tax withholding | 284 | $160.97K | Form 4 |
| Jun 1, 2026 | FENNELL GEORGEExecutive Vice President | Option exercise | 639 | — | Form 4 |
| May 7, 2026 | JUNIUS DANIEL MDirector | Option exercise | 257 | — | Form 4 |
| May 7, 2026 | SZOSTAK M ANNEDirector | Option exercise | 257 | — | Form 4 |
| May 7, 2026 | Vandebroek Sophie V.Director | Option exercise | 257 | — | Form 4 |
| May 7, 2026 | HOOLEY JOSEPH LDirector | Option exercise | 158 | — | Form 4 |
| May 7, 2026 | Kingsley Lawrence DDirector | Option exercise | 82 | — | Form 4 |
| May 7, 2026 | Kingsley Lawrence DDirector | Option exercise | 257 | — | Form 4 |
| May 7, 2026 | Peacock KarenDirector | Option exercise | 101 | — | Form 4 |
| Apr 30, 2026 | HOOLEY JOSEPH LDirector | Award | 43 | $24.11K | Form 4 |
| Mar 3, 2026 | Underberg Sharon E.EVP, GC & Corporate Secretary | Option exercise | 197 | $99.59K | Form 4 |
| Mar 3, 2026 | Hunt NimrataExecutive Vice President | Sale | 1,758 | $1.12M | Form 4 |
| Feb 27, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Option exercise | 197 | $99.59K | Form 4 |
| Feb 26, 2026 | Hunt NimrataExecutive Vice President | Sale | 2,693 | $1.78M | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 2,589 | $1.72M | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,000 | $662.16K | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,200 | $793.32K | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 2,859 | $1.89M | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 3,660 | $2.41M | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 2,860 | $1.88M | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,343 | $882.14K | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,488 | $975.90K | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,111 | $727.29K | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,171 | $765.45K | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,669 | $1.09M | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,095 | $713.38K | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Sale | 1,281 | $833.51K | Form 4 |
| Feb 26, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Option exercise | 23,326 | $3.30M | Form 4 |
| Feb 19, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 197 | $99.59K | Form 4 |
| Feb 19, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 183 | $99.57K | Form 4 |
| Feb 19, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 483 | $99.95K | Form 4 |
| Feb 19, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 817 | $145.64K | Form 4 |
| Feb 19, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 719 | $101.81K | Form 4 |
| Feb 17, 2026 | Vandebroek Sophie V.Director | Sale | 519 | $326.22K | Form 4 |
| Feb 17, 2026 | Vandebroek Sophie V.Director | Sale | 945 | $594.07K | Form 4 |
| Feb 17, 2026 | Vandebroek Sophie V.Director | Option exercise | 945 | $315.54K | Form 4 |
| Feb 17, 2026 | Erickson Michael GExecutive Vice President | Sale | 40 | $25.19K | Form 4 |
| Feb 17, 2026 | Erickson Michael GExecutive Vice President | Sale | 689 | $433.44K | Form 4 |
| Feb 17, 2026 | Erickson Michael GExecutive Vice President | Sale | 2,694 | $1.69M | Form 4 |
| Feb 17, 2026 | Erickson Michael GExecutive Vice President | Sale | 1,288 | $806.62K | Form 4 |
| Feb 17, 2026 | Erickson Michael GExecutive Vice President | Sale | 204 | $127.55K | Form 4 |
| Feb 17, 2026 | Erickson Michael GExecutive Vice President | Sale | 456 | $284.43K | Form 4 |
| Feb 17, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 4,180 | $745.13K | Form 4 |
| Feb 17, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 1,191 | $168.65K | Form 4 |
| Feb 14, 2026 | FENNELL GEORGEExecutive Vice President | Option exercise | 204 | — | Form 4 |
| Feb 14, 2026 | FENNELL GEORGEExecutive Vice President | Option exercise | 139 | — | Form 4 |
| Feb 14, 2026 | FENNELL GEORGEExecutive Vice President | Option exercise | 56 | — | Form 4 |
| Feb 14, 2026 | FENNELL GEORGEExecutive Vice President | Option exercise | 55 | — | Form 4 |
| Feb 14, 2026 | Johnson Michael PerkinsExecutive Vice President | Tax withholding | 178 | $112.02K | Form 4 |
| Feb 14, 2026 | Johnson Michael PerkinsExecutive Vice President | Option exercise | 218 | — | Form 4 |
| Feb 14, 2026 | Johnson Michael PerkinsExecutive Vice President | Option exercise | 179 | — | Form 4 |
| Feb 14, 2026 | Johnson Michael PerkinsExecutive Vice President | Option exercise | 176 | — | Form 4 |
| Feb 14, 2026 | Lane MichaelExecutive Vice President | Tax withholding | 221 | $139.09K | Form 4 |
| Feb 14, 2026 | Lane MichaelExecutive Vice President | Option exercise | 367 | — | Form 4 |
| Feb 14, 2026 | Lane MichaelExecutive Vice President | Option exercise | 301 | — | Form 4 |
| Feb 14, 2026 | Lane MichaelExecutive Vice President | Option exercise | 220 | — | Form 4 |
| Feb 14, 2026 | Lane MichaelExecutive Vice President | Option exercise | 204 | — | Form 4 |
| Feb 14, 2026 | Emerson AndrewEVP, CFO and Treasurer | Tax withholding | 123 | $77.41K | Form 4 |
| Feb 14, 2026 | Emerson AndrewEVP, CFO and Treasurer | Option exercise | 65 | — | Form 4 |
| Feb 14, 2026 | Emerson AndrewEVP, CFO and Treasurer | Option exercise | 194 | — | Form 4 |
| Feb 14, 2026 | Emerson AndrewEVP, CFO and Treasurer | Option exercise | 42 | — | Form 4 |
| Feb 14, 2026 | Emerson AndrewEVP, CFO and Treasurer | Option exercise | 94 | — | Form 4 |
| Feb 14, 2026 | Emerson AndrewEVP, CFO and Treasurer | Option exercise | 61 | — | Form 4 |
| Feb 14, 2026 | Erickson Michael GExecutive Vice President | Tax withholding | 974 | $612.99K | Form 4 |
| Feb 14, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 184 | — | Form 4 |
| Feb 14, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 1,508 | — | Form 4 |
| Feb 14, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 184 | — | Form 4 |
| Feb 14, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 301 | — | Form 4 |
| Feb 14, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 94 | — | Form 4 |
| Feb 14, 2026 | Erickson Michael GExecutive Vice President | Option exercise | 92 | — | Form 4 |
| Feb 14, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Tax withholding | 915 | $575.86K | Form 4 |
| Feb 14, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Option exercise | 1,099 | — | Form 4 |
| Feb 14, 2026 | MAZELSKY JONATHAN JAYPresident and CEO | Option exercise | 958 | — | Form 4 |
| Feb 14, 2026 | Hunt NimrataExecutive Vice President | Tax withholding | 1,154 | $726.27K | Form 4 |
| Feb 14, 2026 | Hunt NimrataExecutive Vice President | Option exercise | 367 | — | Form 4 |
| Feb 14, 2026 | Hunt NimrataExecutive Vice President | Option exercise | 1,508 | — | Form 4 |
| Feb 14, 2026 | Hunt NimrataExecutive Vice President | Option exercise | 301 | — | Form 4 |
| Feb 14, 2026 | Hunt NimrataExecutive Vice President | Option exercise | 207 | — | Form 4 |
| Feb 14, 2026 | Hunt NimrataExecutive Vice President | Option exercise | 204 | — | Form 4 |
| Feb 14, 2026 | Smith Martin AlexanderExecutive Vice President | Tax withholding | 302 | $190.06K | Form 4 |
| Feb 14, 2026 | Smith Martin AlexanderExecutive Vice President | Option exercise | 367 | — | Form 4 |
| Feb 14, 2026 | Smith Martin AlexanderExecutive Vice President | Option exercise | 301 | — | Form 4 |
| Feb 14, 2026 | Smith Martin AlexanderExecutive Vice President | Option exercise | 188 | — | Form 4 |
| Feb 14, 2026 | Smith Martin AlexanderExecutive Vice President | Option exercise | 148 | — | Form 4 |
| Feb 14, 2026 | Schreck MichaelExecutive Vice President | Tax withholding | 876 | $551.31K | Form 4 |
| Feb 14, 2026 | Schreck MichaelExecutive Vice President | Option exercise | 1,005 | — | Form 4 |
| Feb 14, 2026 | Schreck MichaelExecutive Vice President | Option exercise | 367 | — | Form 4 |
| Feb 14, 2026 | Schreck MichaelExecutive Vice President | Option exercise | 301 | — | Form 4 |
| Feb 14, 2026 | Schreck MichaelExecutive Vice President | Option exercise | 169 | — | Form 4 |
| Feb 14, 2026 | Schreck MichaelExecutive Vice President | Option exercise | 117 | — | Form 4 |
| Feb 14, 2026 | Underberg Sharon E.EVP, GC & Corporate Secretary | Tax withholding | 251 | $157.97K | Form 4 |
| Feb 14, 2026 | Underberg Sharon E.EVP, GC & Corporate Secretary | Option exercise | 265 | — | Form 4 |
| Feb 14, 2026 | Underberg Sharon E.EVP, GC & Corporate Secretary | Option exercise | 218 | — | Form 4 |
| Feb 14, 2026 | Underberg Sharon E.EVP, GC & Corporate Secretary | Option exercise | 176 | — | Form 4 |
| Feb 14, 2026 | Underberg Sharon E.EVP, GC & Corporate Secretary | Option exercise | 173 | — | Form 4 |
Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4