Jay Mazelsky

Insider profile

Currently holds a position at IDEXX Laboratories, Inc.

Performance

Overall performance
3.1
Performance over holding periods
3.1
30 days 90 days 120 days
Average return 5% 8.2% 15.1%
Success rate 61% 68% 82%
Transactions
63 0% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance

Positions

Position Company Period
President, Chief Executive Officer, Director IDEXX Laboratories, Inc. Oct. 23, 2019 -
Interim President, Chief Executive Officer IDEXX Laboratories, Inc. June 28, 2019 - Oct. 23, 2019
Executive Vice President IDEXX Laboratories, Inc. Aug. 1, 2012 - June 28, 2019
Jay Mazelsky's trades of IDEXX Laboratories, Inc.'s stock


• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Transaction date
Sale
Price
705.59
Quantity 240 -0.3%
Value US$169,342
Transaction date
Proposed sale
Price
703.19
Quantity 25,140
Value US$17,678,197
Transaction date
Proposed sale
Price
657.55
Quantity 23,326
Value US$15,338,081
Transaction date
Proposed sale
Price
631.98
Quantity 29,260
Value US$18,491,641
Transaction date
Proposed sale
Price
515.08
Quantity 12,000
Value US$6,180,960
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-11-05 2026-11-04
S Sale
1,292 +6.9%
402.01
US$3,576,628 		1,292 +6.9% 402.01 US$3,576,628
2026-11-05 2026-11-04
S Sale
36,760 +40.7%
108.27
US$1,818,134 		36,760 +40.7% 108.27 US$1,818,134
2026-11-05 2026-11-04
S Sale
10,466 -27.6%
497.06
US$2,743,860 		10,466 -27.6% 497.06 US$2,743,860
2026-11-05 2026-11-04
S Sale
1,300 -1.5%
709.00
US$921,702 		1,300 -1.5% 709.00 US$921,702
2026-11-05 2026-11-04
S Sale
1,840 -2.1%
707.84
US$1,302,434 		1,840 -2.1% 707.84 US$1,302,434
2026-11-05 2026-11-04
S Sale
840 -0.9%
707.00
US$593,880 		840 -0.9% 707.00 US$593,880
2026-11-05 2026-11-04
S Sale
240 -0.3%
705.59
US$169,342 		240 -0.3% 705.59 US$169,342
2026-11-05 2026-11-04
S Sale
3,950 -4.2%
703.45
US$2,778,624 		3,950 -4.2% 703.45 US$2,778,624
2026-11-05 2026-11-04
S Sale
2,136 -2.2%
702.21
US$1,499,922 		2,136 -2.2% 702.21 US$1,499,922
2026-11-05 2026-11-04
S Sale
4,540 -4.5%
701.36
US$3,184,158 		4,540 -4.5% 701.36 US$3,184,158
2026-11-05 2026-11-04
S Sale
1,667 -1.6%
700.33
US$1,167,442 		1,667 -1.6% 700.33 US$1,167,442
2026-11-05 2026-11-04
S Sale
4,075 -3.8%
699.33
US$2,849,761 		4,075 -3.8% 699.33 US$2,849,761
2026-11-05 2026-11-04
S Sale
1,945 -1.8%
698.26
US$1,358,121 		1,945 -1.8% 698.26 US$1,358,121
2026-11-04 2026-11-04
PrS Proposed sale
25,140
703.19
US$17,678,197 		25,140 703.19 US$17,678,197
2026-03-02 2026-02-26
S Sale
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
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
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
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
3,660 -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
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
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
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
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
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
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
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
1,281 -1.2%
650.67
US$833,508 		1,281 -1.2% 650.67 US$833,508
2026-02-26 2026-02-26
PrS Proposed sale
23,326
657.55
US$15,338,081 		23,326 657.55 US$15,338,081
2025-08-08 2025-08-06
S Sale
660 -0.8%
639.37
US$421,985 		660 -0.8% 639.37 US$421,985
2025-08-08 2025-08-06
S Sale
880 -1.0%
636.81
US$560,391 		880 -1.0% 636.81 US$560,391
2025-08-08 2025-08-06
S Sale
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
3,526 -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
3,000 -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
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
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
3,397 -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
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
1,095 -1.0%
626.90
US$686,458 		1,095 -1.0% 626.90 US$686,458
2025-08-06 2025-08-06
PrS Proposed sale
29,260
631.98
US$18,491,641 		29,260 631.98 US$18,491,641
2024-02-09 2024-02-07
S Sale
705 -0.9%
575.48
US$405,711 		705 -0.9% 575.48 US$405,711
2024-02-09 2024-02-07
S Sale
1,353 -1.7%
574.75
US$777,639 		1,353 -1.7% 574.75 US$777,639
2024-02-09 2024-02-07
S Sale
462 -0.6%
573.19
US$264,814 		462 -0.6% 573.19 US$264,814
2024-02-09 2024-02-07
S Sale
4,124 -4.8%
572.53
US$2,361,094 		4,124 -4.8% 572.53 US$2,361,094
2024-02-09 2024-02-07
S Sale
5,356 -5.9%
571.71
US$3,062,061 		5,356 -5.9% 571.71 US$3,062,061
2024-02-07 2024-02-07
PrS Proposed sale
12,000
515.08
US$6,180,960 		12,000 515.08 US$6,180,960

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