United States Healthcare Equipment & Supplies

IDEXX Laboratories Inc (IDXX)

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IDEXX Laboratories Inc. has seen consistent insider selling activity over the past 90 days, primarily involving senior leadership. Notably, CEO Jonathan Mazelsky and other executives executed multiple sell transactions following the company's recent earnings report. These sales reflect ongoing divestment by key insiders, occurring against a backdrop of relatively stable stock performance.
Ticker: IDXX Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for IDEXX Laboratories Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Proposed sale 20 May 2026
Value US$871,669.27 | Price 308.52 | Shares 58,274
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-20 2026-05-20 PrS Proposed sale
2.5
Margaret Anne Szostak

Director

Non-Executive Director
58,274
308.52
US$871,669 		58,274 308.52 US$871,669
2026-03-05 2026-03-03 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
51,600 +25.0%
318.76
US$3,385,349 		51,600 +25.0% 318.76 US$3,385,349
2026-03-03 2026-03-03 PrS Proposed sale
3.0
NIMRATA K HUNT

Officer

Officer
94,145
129.75
US$4,972,802 		94,145 129.75 US$4,972,802
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
2,589 -3.0%
663.04
US$1,716,621 		2,589 -3.0% 663.04 US$1,716,621
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,000 -1.1%
662.16
US$662,157 		1,000 -1.1% 662.16 US$662,157
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,200 -1.4%
661.10
US$793,317 		1,200 -1.4% 661.10 US$793,317
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
2,859 -3.1%
659.75
US$1,886,224 		2,859 -3.1% 659.75 US$1,886,224
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
3,660 -3.9%
658.92
US$2,411,635 		3,660 -3.9% 658.92 US$2,411,635
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
2,860 -2.9%
657.84
US$1,881,433 		2,860 -2.9% 657.84 US$1,881,433
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,343 -1.4%
656.85
US$882,143 		1,343 -1.4% 656.85 US$882,143
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,488 -1.5%
655.85
US$975,905 		1,488 -1.5% 655.85 US$975,905
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,111 -1.1%
654.63
US$727,293 		1,111 -1.1% 654.63 US$727,293
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,171 -1.1%
653.68
US$765,455 		1,171 -1.1% 653.68 US$765,455
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,669 -1.6%
652.49
US$1,089,013 		1,669 -1.6% 652.49 US$1,089,013
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,095 -1.0%
651.49
US$713,378 		1,095 -1.0% 651.49 US$713,378
2026-03-02 2026-02-26 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,281 -1.2%
650.67
US$833,508 		1,281 -1.2% 650.67 US$833,508
2026-02-27 2026-02-26 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
2,693 -11.9%
661.54
US$1,781,531 		2,693 -11.9% 661.54 US$1,781,531
2026-02-26 2026-02-26 PrS Proposed sale
3.1
JONATHAN J MAZELSKY

Officer; Director

Executive Director
23,326
657.55
US$15,338,081 		23,326 657.55 US$15,338,081
2026-02-25 2026-02-25 PrS Proposed sale
3.0
NIMRATA K HUNT

Officer

Officer
2,693
661.54
US$1,781,531 		2,693 661.54 US$1,781,531
2026-02-19 2026-02-17 S Sale
3.3
Erickson Michael G

Executive Vice President

Officer
40 -0.3%
629.86
US$25,194 		40 -0.3% 629.86 US$25,194
2026-02-19 2026-02-17 S Sale
3.3
Erickson Michael G

Executive Vice President

Officer
689 -5.1%
629.09
US$433,443 		689 -5.1% 629.09 US$433,443
2026-02-19 2026-02-17 S Sale
3.3
Erickson Michael G

Executive Vice President

Officer
2,694 -16.7%
628.22
US$1,692,427 		2,694 -16.7% 628.22 US$1,692,427
2026-02-19 2026-02-17 S Sale
3.3
Erickson Michael G

Executive Vice President

Officer
1,288 -7.4%
626.26
US$806,618 		1,288 -7.4% 626.26 US$806,618
2026-02-19 2026-02-17 S Sale
3.3
Erickson Michael G

Executive Vice President

Officer
204 -1.2%
625.24
US$127,549 		204 -1.2% 625.24 US$127,549
2026-02-19 2026-02-17 S Sale
3.3
Erickson Michael G

Executive Vice President

Officer
456 -2.5%
623.76
US$284,434 		456 -2.5% 623.76 US$284,434
2026-02-19 2026-02-17 S Sale
3.2
Vandebroek Sophie V.
Non-Executive Director
519 -44.5%
628.56
US$326,223 		519 -44.5% 628.56 US$326,223
2026-02-19 2026-02-17 S Sale
3.2
Vandebroek Sophie V.
Non-Executive Director
945 -44.7%
628.65
US$594,070 		945 -44.7% 628.65 US$594,070
2026-02-17 2026-02-17 PrS Proposed sale
3.3
MICHAEL G ERICKSON

Officer

Officer
5,371
627.38
US$3,369,667 		5,371 627.38 US$3,369,667
2026-02-17 2026-02-17 PrS Proposed sale
3.2
SOPHIE V VANDEBROEK

Director

Non-Executive Director
1,464
628.62
US$920,293 		1,464 628.62 US$920,293
2026-02-11 2026-02-10 S Sale
3.5
FENNELL GEORGE

Executive Vice President

Officer
40 -0.4%
650.32
US$26,013 		40 -0.4% 650.32 US$26,013
2026-02-11 2026-02-10 S Sale
3.5
FENNELL GEORGE

Executive Vice President

Officer
2,809 -22.2%
649.26
US$1,823,771 		2,809 -22.2% 649.26 US$1,823,771
2026-02-11 2026-02-10 S Sale
3.5
FENNELL GEORGE

Executive Vice President

Officer
966 -7.1%
648.78
US$626,721 		966 -7.1% 648.78 US$626,721
2026-02-11 2026-02-10 S Sale
3.5
FENNELL GEORGE

Executive Vice President

Officer
1,060 -7.2%
647.21
US$686,039 		1,060 -7.2% 647.21 US$686,039
2026-02-11 2026-02-10 S Sale
3.5
FENNELL GEORGE

Executive Vice President

Officer
2,782 -15.9%
646.23
US$1,797,800 		2,782 -15.9% 646.23 US$1,797,800
2026-02-11 2026-02-10 S Sale
3.5
FENNELL GEORGE

Executive Vice President

Officer
2,161 -11.0%
645.25
US$1,394,388 		2,161 -11.0% 645.25 US$1,394,388
2026-02-11 2026-02-10 S Sale
3.5
FENNELL GEORGE

Executive Vice President

Officer
397 -2.0%
644.02
US$255,674 		397 -2.0% 644.02 US$255,674
2026-02-11 2026-02-10 S Sale
3.5
FENNELL GEORGE

Executive Vice President

Officer
1,130 -5.3%
643.00
US$726,587 		1,130 -5.3% 643.00 US$726,587
2026-02-10 2026-02-10 PrS Proposed sale
3.5
GEORGE FENNELL

Officer

Officer
11,345
646.72
US$7,336,994 		11,345 646.72 US$7,336,994
2025-11-10 2025-11-07 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
1,378 -6.1%
705.54
US$972,241 		1,378 -6.1% 705.54 US$972,241
2025-11-10 2025-11-07 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
1,468 -6.1%
704.87
US$1,034,743 		1,468 -6.1% 704.87 US$1,034,743
2025-11-10 2025-11-07 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
1,465 -5.8%
703.73
US$1,030,970 		1,465 -5.8% 703.73 US$1,030,970
2025-11-10 2025-11-07 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
5,114 -16.7%
702.20
US$3,591,059 		5,114 -16.7% 702.20 US$3,591,059
2025-11-07 2025-11-07 PrS Proposed sale
3.0
NIMRATA K HUNT

Officer

Officer
9,425
703.35
US$6,629,060 		9,425 703.35 US$6,629,060
2025-08-26 2025-08-22 S Sale
2.5
SZOSTAK M ANNE
Non-Executive Director
2,187 -89.3%
647.33
US$1,415,700 		2,187 -89.3% 647.33 US$1,415,700
2025-08-22 2025-08-22 PrS Proposed sale
2.5
MARGARET ANNE SZOSTAK

Director

Non-Executive Director
2,187
647.33
US$1,415,700 		2,187 647.33 US$1,415,700
2025-08-14 2025-08-12 S Sale
3.3
Erickson Michael G

Executive Vice President

Officer
88 -0.8%
649.85
US$57,117 		88 -0.8% 649.85 US$57,117
2025-08-14 2025-08-12 PlS Planned sale
3.3
Erickson Michael G

Executive Vice President

Officer
318 -2.7%
649.99
US$206,697 		318 -2.7% 649.99 US$206,697
2025-08-12 2025-08-12 PrS Proposed sale
3.3
MICHAEL G ERICKSON

Officer

Officer
407
649.96
US$264,534 		407 649.96 US$264,534
2025-08-13 2025-08-11 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
1,200 -6.7%
656.53
US$787,840 		1,200 -6.7% 656.53 US$787,840
2025-08-11 2025-08-11 PrS Proposed sale
3.0
NIMRATA K HUNT

Officer

Officer
1,200
656.53
US$787,840 		1,200 656.53 US$787,840
2025-08-12 2025-08-08 S Sale
1.0
Underberg Sharon E.

EVP, GC & Corporate Secretary

Officer
5,450 -47.0%
651.60
US$3,551,220 		5,450 -47.0% 651.60 US$3,551,220
2025-08-08 2025-08-08 PrS Proposed sale
1.0
SHARON E UNDERBERG

Officer

Officer
5,450
651.60
US$3,551,220 		5,450 651.60 US$3,551,220
2025-08-08 2025-08-06 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
1,218 -6.3%
630.69
US$768,179 		1,218 -6.3% 630.69 US$768,179
2025-08-08 2025-08-06 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
2,907 -13.1%
630.91
US$1,834,052 		2,907 -13.1% 630.91 US$1,834,052
2025-08-08 2025-08-06 S Sale
3.0
Hunt Nimrata

Executive Vice President

Officer
3,018 -12.0%
629.87
US$1,900,933 		3,018 -12.0% 629.87 US$1,900,933
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
660 -0.8%
639.37
US$421,985 		660 -0.8% 639.37 US$421,985
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
880 -1.0%
636.81
US$560,391 		880 -1.0% 636.81 US$560,391
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,822 -2.1%
636.15
US$1,159,068 		1,822 -2.1% 636.15 US$1,159,068
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
3,526 -3.9%
635.13
US$2,239,457 		3,526 -3.9% 635.13 US$2,239,457
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
3,000 -3.2%
632.56
US$1,897,689 		3,000 -3.2% 632.56 US$1,897,689
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
7,299 -7.3%
631.61
US$4,610,096 		7,299 -7.3% 631.61 US$4,610,096
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
6,056 -5.7%
630.59
US$3,818,874 		6,056 -5.7% 630.59 US$3,818,874
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
3,397 -3.1%
629.82
US$2,139,508 		3,397 -3.1% 629.82 US$2,139,508
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,525 -1.4%
628.27
US$958,115 		1,525 -1.4% 628.27 US$958,115
2025-08-08 2025-08-06 S Sale
3.1
MAZELSKY JONATHAN JAY

President and CEO

Executive Director
1,095 -1.0%
626.90
US$686,458 		1,095 -1.0% 626.90 US$686,458
2025-08-08 2025-08-06 S Sale
3.1
Lane Michael

Executive Vice President

Officer
300 -4.0%
628.89
US$188,666 		300 -4.0% 628.89 US$188,666
2025-08-08 2025-08-06 S Sale
3.1
Lane Michael

Executive Vice President

Officer
2,480 -25.0%
627.99
US$1,557,418 		2,480 -25.0% 627.99 US$1,557,418
2025-08-08 2025-08-06 S Sale
3.1
Lane Michael

Executive Vice President

Officer
5,631 -36.2%
627.56
US$3,533,810 		5,631 -36.2% 627.56 US$3,533,810
2025-08-06 2025-08-06 PrS Proposed sale
3.0
NIMRATA K HUNT

Officer

Officer
7,143
630.43
US$4,503,161 		7,143 630.43 US$4,503,161
2025-08-06 2025-08-06 PrS Proposed sale
3.1
JONATHAN J MAZELSKY

Officer; Director

Executive Director
29,260
631.98
US$18,491,641 		29,260 631.98 US$18,491,641
2025-08-06 2025-08-06 PrS Proposed sale
3.1
MICHAEL J LANE

Officer

Officer
8,411
627.74
US$5,279,893 		8,411 627.74 US$5,279,893
2025-05-23 2025-05-21 S Sale
2.5
SZOSTAK M ANNE
Non-Executive Director
1,260 -41.2%
512.34
US$645,545 		1,260 -41.2% 512.34 US$645,545
2025-05-23 2025-05-21 S Sale
2.5
SZOSTAK M ANNE
Non-Executive Director
1,046 -80.0%
513.74
US$537,372 		1,046 -80.0% 513.74 US$537,372
2025-05-21 2025-05-21 PrS Proposed sale
2.5
SZOSTAK M ANNE

Director

Non-Executive Director
1,046
517.16
US$540,949 		1,046 517.16 US$540,949
2025-05-21 2025-05-21 PrS Proposed sale
2.5
SZOSTAK M ANNE

Director

Non-Executive Director
1,260
517.16
US$651,621 		1,260 517.16 US$651,621
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