List of insiders holdings for IDEXX LABORATORIES INC: 
 - Shares directly owned by the insider.
 - Shares indirectly owned by the insider.
 - Total shares owned by the insider (sum of shares directly and indirectly owned).
 - Total market value if available.
 - Shares are not adjusted for stock split.
 
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
 - Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time  | Shares Owned Directly Indirectly  | Total Shares Owned  | Filing | 
| 1 | AYERS JONATHAN W Director  | 2024-09-09 16:20:19 | 35,651 122,605  | 158,256 | Form 4 | 
| 2 | MAZELSKY JONATHAN JAY President and CEO  | 2025-09-04 18:20:02 | 82,443 0  | 82,443 | Form 4 | 
| 3 | Williams Michael J PhD Executive Vice President  | 2016-08-15 18:05:05 | 59,113 0  | 59,113 | Form 4 | 
| 4 | MCKEON BRIAN P EVP, CFO and Treasurer  | 2025-02-18 21:44:17 | 33,362 18,050  | 51,412 | Form 4 | 
| 5 | FRATONI S SAM Corporate Vice President  | 2009-02-02 11:34:41 | 49,056 2,100  | 51,156 | Form 5 | 
| 6 | BROWN WILLIAM E III Executive Vice President  | 2013-02-19 19:22:11 | 50,060 0  | 50,060 | Form 4 | 
| 7 | MOODY JAMES L JR Director  | 2005-05-03 16:23:31 | 48,716 0  | 48,716 | Form 4 | 
| 8 | MURRAY ROBERT J Director  | 2015-05-08 13:57:21 | 36,347 9,587  | 45,934 | Form 4 | 
| 9 | RAINES MERILEE Executive VP & CFO  | 2013-02-27 11:59:56 | 44,612 0  | 44,612 | Form 4 | 
| 10 | Dupree Thomas J Corporate Vice President  | 2011-02-22 17:24:54 | 43,564 0  | 43,564 | Form 4 | 
| 11 | HULSY ROBERT S Corporate Vice President  | 2007-03-20 09:58:06 | 39,740 0  | 39,740 | Form 4 | 
| 12 | POWERS JOHNNY D Executive Vice President  | 2015-12-08 18:11:00 | 38,557 0  | 38,557 | Form 4 | 
| 13 | GOODSPEED WILLIAM B. Corporate Vice President  | 2011-04-28 16:17:58 | 34,720 0  | 34,720 | Form 4 | 
| 14 | END WILLIAM T Director  | 2018-05-11 18:59:53 | 31,786 0  | 31,786 | Form 4 | 
| 15 | Kerr Irene C Corporate Vice President  | 2008-02-19 17:29:50 | 28,421 0  | 28,421 | Form 4 | 
| 16 | WALLEN WILLIAM C Senior VP & CSO  | 2010-02-17 16:01:16 | 28,198 0  | 28,198 | Form 4 | 
| 17 | CRAIG THOMAS Director  | 2017-05-01 18:02:19 | 24,471 0  | 24,471 | Form 4 | 
| 18 | TWIGGE GIOVANI Senior Vice President  | 2022-02-25 17:01:30 | 24,113 0  | 24,113 | Form 4 | 
| 19 | TONELLI QUENTIN J Corporate Vice President  | 2007-05-24 14:04:56 | 23,819 0  | 23,819 | Form 4 | 
| 20 | Meyaard Daniel V Corporate Vice President  | 2013-02-19 19:27:03 | 22,000 0  | 22,000 | Form 4 | 
| 21 | DEADY CONAN R Corp VP and General Counsel  | 2013-03-07 17:31:53 | 19,007 0  | 19,007 | Form 4 | 
| 22 | Hunt Nimrata Executive Vice President  | 2025-08-13 17:17:04 | 18,033 160  | 18,193 | Form 4 | 
| 23 | NAQUI ALI Corporate Vice President  | 2013-05-13 16:19:23 | 17,513 0  | 17,513 | Form 4 | 
| 24 | Turner Kathy V Senior Vice President  | 2023-02-17 17:04:54 | 14,842 100  | 14,942 | Form 4 | 
| 25 | HENDERSON REBECCA M Director  | 2021-02-25 19:35:26 | 14,696 0  | 14,696 | Form 4 | 
| 26 | FENNELL GEORGE Executive Vice President  | 2025-02-18 21:42:58 | 13,379 0  | 13,379 | Form 4 | 
| 27 | POLEWACZYK JAMES F Executive Vice President  | 2024-03-07 17:00:38 | 12,074 0  | 12,074 | Form 4 | 
| 28 | POLLOCK LOUIS W Senior Vice President  | 2004-01-30 17:00:29 | 11,577 0  | 11,577 | Form 4 | 
| 29 | Schreck Michael Executive Vice President  | 2025-02-18 21:43:47 | 11,319 0  | 11,319 | Form 4 | 
| 30 | Erickson Michael G Executive Vice President  | 2025-08-14 18:01:09 | 11,287 0  | 11,287 | Form 4 | 
| 31 | Kingsley Lawrence D Director  | 2025-05-08 19:01:17 | 10,360 0  | 10,360 | Form 4 | 
| 32 | Vandebroek Sophie V. Director  | 2025-05-13 17:00:17 | 1,167 8,173  | 9,340 | Form 4 | 
| 33 | BLANCHE WILLARD R JR CHIEF FINANCIAL OFFICER  | 2013-05-20 10:36:22 | 8,711 0  | 8,711 | Form 3 | 
| 34 | LABAUVE LAUREL E Vice President  | 2006-02-16 14:39:44 | 8,015 0  | 8,015 | Form 4 | 
| 35 | Lane Michael Executive Vice President  | 2025-08-08 20:37:18 | 7,132 592  | 7,724 | Form 4 | 
| 36 | DESOUZA ERROL B Director  | 2009-05-01 14:46:02 | 7,276 0  | 7,276 | Form 4 | 
| 37 | JOINER JENNIFER A Vice President  | 2006-02-16 14:14:45 | 6,412 0  | 6,412 | Form 4 | 
| 38 | Underberg Sharon E. EVP, GC & Corporate Secretary  | 2025-08-12 17:00:39 | 6,339 0  | 6,339 | Form 4 | 
| 39 | VUMBACCO JOSEPH V Director  | 2012-08-13 13:06:37 | 5,169 0  | 5,169 | Form 4 | 
| 40 | Studer Jacqueline CVP, Gen. Counsel & Secretary  | 2019-02-27 17:24:52 | 5,097 0  | 5,097 | Form 4 | 
| 41 | Fiarman Jeffrey EVP, GEN COUNSEL & SECRETARY  | 2014-06-03 16:50:54 | 4,268 0  | 4,268 | Form 4 | 
| 42 | Emerson Andrew EVP, CFO and Treasurer  | 2025-08-11 18:00:21 | 3,871 0  | 3,871 | Form 4 | 
| 43 | JOHNSON BARRY C Director  | 2016-08-16 18:00:21 | 3,560 0  | 3,560 | Form 4 | 
| 44 | JUNIUS DANIEL M Director  | 2025-05-14 17:00:15 | 3,304 0  | 3,304 | Form 4 | 
| 45 | ESSIG STUART Director  | 2025-05-08 19:00:53 | 3,093 0  | 3,093 | Form 4 | 
| 46 | CHADBOURNE JEFFERY D PRINCIPAL ACCOUNTING OFFICER  | 2013-05-20 10:34:23 | 2,512 0  | 2,512 | Form 3 | 
| 47 | Johnson Michael Perkins Executive Vice President  | 2025-06-03 17:00:38 | 2,365 0  | 2,365 | Form 4 | 
| 48 | COLLINS Asha Director  | 2024-05-08 19:01:21 | 1,650 0  | 1,650 | Form 4 | 
| 49 | Smith Martin Alexander Executive Vice President  | 2025-09-03 17:56:31 | 1,434 0  | 1,434 | Form 4 | 
| 50 | Claflin Bruce L. Director  | 2025-05-08 19:00:42 | 857 0  | 857 | Form 4 | 
| 51 | SAMAD SAM Director  | 2025-05-08 19:01:27 | 857 0  | 857 | Form 4 | 
| 52 | Britt Irene Chang Director  | 2025-05-08 19:00:32 | 857 0  | 857 | Form 4 | 
| 53 | GOOD MARY L PHD Director  | 2005-05-03 16:36:41 | 622 0  | 622 | Form 4 | 
| 54 | SZOSTAK M ANNE Director  | 2025-08-26 17:00:16 | 262 259  | 521 | Form 4 | 
| 55 | HOOLEY JOSEPH L Director  | 2025-11-03 17:00:14 | 39 0  | 39 | Form 4 | 
| 56 | Peacock Karen Director  | 2025-10-20 19:51:13 | 1 0  | 1 | Form 3/A |