IDXX Insider Trading

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Insider Ownership Percentage: 0.79%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $71,967,476.48

IDEXX Laboratories Insider Trading History Chart

IDEXX Laboratories Share Price & Price History

^$577.48

▲ +14.357 (2.55%)

As of 05/5/2026 01:12 PM ET

Days: 30 | 90 | 365

IDEXX Laboratories Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
3/3/2026	Nimrata Hunt	EVP	Sell	1,758	$634.57	$1,115,574.06	18,141
2/26/2026	Jonathan Jay Mazelsky	CEO	Sell	23,326	$657.55	$15,338,011.30	83,606
2/26/2026	Nimrata Hunt	EVP	Sell	2,693	$661.54	$1,781,527.22	19,899
2/17/2026	Michael G. Erickson	EVP	Sell	5,371	$627.38	$3,369,657.98	12,693
2/17/2026	Sophie V Vandebroek	Director	Sell	1,464	$628.62	$920,299.68	648
2/10/2026	George Fennell	EVP	Sell	11,345	$646.72	$7,337,038.40	9,823
11/7/2025	Nimrata Hunt	EVP	Sell	9,425	$703.34	$6,628,979.50	21,149
8/22/2025	M. Anne Szostak	Director	Sell	2,187	$647.33	$1,415,710.71	262
8/12/2025	Michael G. Erickson	EVP	Sell	406	$649.96	$263,883.76	11,287
8/11/2025	Nimrata Hunt	EVP	Sell	1,200	$656.53	$787,836.00	16,807
8/8/2025	Sharon E. Underberg	EVP	Sell	5,450	$651.60	$3,551,220.00	6,156
8/6/2025	Jonathan Jay Mazelsky	CEO	Sell	29,260	$631.98	$18,491,734.80	83,311
8/6/2025	Michael Lane	EVP	Sell	8,411	$627.74	$5,279,921.14	7,132
8/6/2025	Nimrata Hunt	EVP	Sell	7,143	$630.43	$4,503,161.49	18,007
5/21/2025	M. Anne Szostak	Director	Sell	1,046	$513.74	$537,372.04	262
5/21/2025	M. Anne Szostak	Director	Sell	1,260	$512.34	$645,548.40	1,801
2/10/2025	George Fennell	EVP	Sell	9,986	$462.53	$4,618,824.58	8,176
2/7/2025	M. Anne Szostak	Director	Sell	3,000	$465.94	$1,397,820.00	3,061
11/27/2024	Sophie V Vandebroek	Director	Sell	344	$420.44	$144,631.36	905
5/17/2024	Bruce L. Claflin	Director	Sell	200	$540.80	$108,160.00	161
2/8/2024	George Fennell	SVP	Sell	8,198	$573.87	$4,704,586.26	6,712
2/7/2024	Brian P. Mckeon	CFO	Sell	23,326	$570.01	$13,296,053.26	29,718
2/7/2024	Jonathan Jay Mazelsky	CEO	Sell	12,000	$572.61	$6,871,320.00	79,247
12/7/2023	James F Polewaczyk	EVP	Sell	11,636	$521.79	$6,071,548.44	10,050
12/4/2023	Jonathan Jay Mazelsky	CEO	Sell	7,128	$513.05	$3,657,020.40	79,233
8/31/2023	Jonathan Jay Mazelsky	CEO	Sell	13,424	$512.01	$6,873,222.24	72,925
8/29/2023	James F Polewaczyk	EVP	Sell	22,909	$510.56	$11,696,419.04	10,038
8/3/2023	Michael Lane	EVP	Sell	16,027	$510.00	$8,173,770.00	4,034
5/18/2023	Jonathan W Ayers	Director	Sell	10,000	$489.23	$4,892,300.00	137,039
5/5/2023	Michael Lane	EVP	Sell	1,000	$484.00	$484,000.00	4,022

SEC Filings (Institutional Ownership Changes) for IDEXX Laboratories (NASDAQ:IDXX)

87.84% of IDEXX Laboratories stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

IDEXX Laboratories Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
5/5/2026	Geneos Wealth Management Inc.	5,928	$3.33M	0.1%	+2,309.8%	0.007%
5/5/2026	Sanctuary Advisors LLC	14,364	$8.07M	0.0%	+12.8%	0.018%
5/5/2026	Checchi Capital Advisers LLC	702	$0.39M	0.0%	+22.7%	0.001%
5/4/2026	Retirement Planning Group LLC	486	$0.27M	0.0%	N/A	0.001%
5/4/2026	Empirical Financial Services LLC d.b.a. Empirical Wealth Management	692	$0.39M	0.0%	+12.7%	0.001%
5/4/2026	Bryn Mawr Trust Advisors LLC	10,268	$5.77M	0.3%	-0.7%	0.013%
5/4/2026	HBW Advisory Services LLC	1,823	$1.02M	0.1%	+2.9%	0.002%
5/4/2026	Principal Financial Group Inc.	881,189	$495.16M	0.3%	-9.1%	1.109%
5/4/2026	Chicago Partners Investment Group LLC	1,157	$0.67M	0.0%	+19.0%	0.001%
5/4/2026	J. Safra Sarasin Holding AG	3,980	$2.23M	0.0%	-1.6%	0.005%
5/4/2026	Procyon Advisors LLC	3,296	$1.85M	0.0%	+13.5%	0.004%
5/2/2026	LGT Fund Management Co Ltd.	1,870	$1.05M	0.0%	+112.5%	0.002%
5/2/2026	International Assets Investment Management LLC	640	$0.36M	0.0%	-3.6%	0.001%
5/2/2026	Trifecta Capital Advisors LLC	160	$90K	0.0%	-46.7%	0.000%
5/2/2026	Castleview Partners LLC	420	$0.24M	0.1%	-16.8%	0.001%
5/2/2026	Arlington Capital Management Inc.	479	$0.27M	0.2%	+4.8%	0.001%
5/2/2026	Diversify Wealth Management LLC	2,097	$1.16M	0.0%	+87.6%	0.003%
5/2/2026	Valmark Advisers Inc.	2,188	$1.23M	0.0%	+13.5%	0.003%
5/2/2026	Pittenger & Anderson Inc.	10,402	$5.85M	0.2%	-0.8%	0.013%
5/2/2026	Carnegie Investment Counsel	2,000	$1.12M	0.0%	+1.3%	0.003%
5/2/2026	UNIVEST FINANCIAL Corp	6,590	$3.70M	0.2%	+1.9%	0.008%
5/1/2026	Welch & Forbes LLC	168,181	$94.50M	1.2%	-0.1%	0.212%
5/1/2026	Seneca House Advisors	728	$0.41M	0.2%	-4.6%	0.001%
5/1/2026	Lincoln Capital LLC	2,990	$1.68M	0.3%	-1.2%	0.004%
5/1/2026	Commonwealth of Pennsylvania Public School Empls Retrmt SYS	18,601	$10.45M	0.1%	+0.1%	0.023%
5/1/2026	Citizens Financial Group Inc. RI	1,729	$0.97M	0.0%	-22.8%	0.002%
5/1/2026	Midwest Trust Co	18,024	$10.13M	0.1%	+1.5%	0.023%
5/1/2026	Fifth Third Bancorp	23,848	$13.40M	0.0%	+217.3%	0.030%
5/1/2026	Vantage Investment Partners LLC	54,067	$30.38M	2.1%	-0.1%	0.068%
5/1/2026	American Trust	1,472	$0.83M	0.1%	-21.9%	0.002%
5/1/2026	Sachetta LLC	304	$0.17M	0.1%	+1,588.9%	0.000%
5/1/2026	WealthShield Partners LLC	2,606	$1.46M	0.2%	-1.3%	0.003%
5/1/2026	Simplicity Wealth LLC	556	$0.31M	0.0%	+28.1%	0.001%
5/1/2026	Candriam S.C.A.	64,015	$35.97M	0.2%	+26.6%	0.081%
5/1/2026	Conning Inc.	372	$0.21M	0.0%	-9.9%	0.000%
5/1/2026	Sequoia Financial Advisors LLC	4,701	$2.64M	0.0%	+18.0%	0.006%
5/1/2026	Villere ST Denis J & Co. LLC	38,736	$21.77M	2.4%	-1.0%	0.049%
5/1/2026	Kornitzer Capital Management Inc. KS	12,719	$7.15M	0.2%	-24.0%	0.016%
4/30/2026	Ramsay Stattman Vela & Price Inc.	4,011	$2.25M	0.4%	-0.7%	0.005%
4/30/2026	Main Street Research LLC	447	$0.25M	0.0%	N/A	0.001%
4/30/2026	Kestra Advisory Services LLC	2,896	$1.63M	0.0%	-14.5%	0.004%
4/30/2026	Granite Investment Partners LLC	3,718	$2.09M	0.1%	-1.6%	0.005%
4/30/2026	Sumitomo Mitsui Trust Group Inc.	197,871	$111.18M	0.1%	-5.4%	0.249%
4/30/2026	Resona Asset Management Co. Ltd.	25,714	$14.42M	0.1%	+1.5%	0.032%
4/30/2026	Munich Reinsurance Co Stock Corp in Munich	184	$0.10M	0.0%	N/A	0.000%
4/30/2026	Personal CFO Solutions LLC	1,712	$0.96M	0.1%	+4.4%	0.002%
4/30/2026	Taylor Frigon Capital Management LLC	3,594	$2.02M	1.2%	-0.7%	0.005%
4/30/2026	Nichols & Pratt Advisers LLP MA	1,000	$0.56M	0.0%	N/A	0.001%
4/30/2026	Frank Rimerman Advisors LLC	534	$0.30M	0.0%	-46.3%	0.001%
4/29/2026	Childress Capital Advisors LLC	5,618	$3.16M	0.6%	-0.5%	0.007%
4/29/2026	Eads & Heald Wealth Management	2,924	$1.64M	0.8%	+3.6%	0.004%
4/29/2026	Resonant Capital Advisors LLC	436	$0.25M	0.0%	N/A	0.001%
4/29/2026	Swedbank AB	35,853	$20.15M	0.0%	-5.6%	0.045%
4/29/2026	Integrated Advisors Network LLC	9,792	$5.50M	0.3%	+2,797.0%	0.012%
4/29/2026	Beacon Bank & Trust	1,155	$0.65M	0.1%	-8.0%	0.001%
4/28/2026	Westfuller Advisors LLC	179	$0.10M	0.0%	-28.4%	0.000%
4/28/2026	Marietta Investment Partners LLC	1,180	$0.66M	0.1%	-14.7%	0.001%
4/28/2026	Stephens Inc. AR	3,295	$1.85M	0.0%	-4.1%	0.004%
4/28/2026	B.O.S.S. Retirement Advisors LLC	808	$0.45M	0.1%	-32.7%	0.001%
4/28/2026	Stephens Investment Management Group LLC	102,097	$57.37M	0.8%	+4.8%	0.129%
4/28/2026	Walter Public Investments Inc.	5,116	$2.88M	0.7%	-48.7%	0.006%
4/28/2026	NBT Bank N A NY	549	$0.31M	0.0%	-55.4%	0.001%
4/28/2026	Howe & Rusling Inc.	9,815	$5.52M	0.4%	+1.8%	0.012%
4/28/2026	Montrusco Bolton Investments Inc.	342,120	$186.71M	2.8%	+93.4%	0.431%
4/28/2026	QRG Capital Management Inc.	2,846	$1.60M	0.0%	+14.0%	0.004%
4/27/2026	HB Wealth Management LLC	4,277	$2.40M	0.0%	+3.3%	0.005%
4/27/2026	Moran Wealth Management LLC	13,128	$7.38M	0.2%	+4.7%	0.017%
4/27/2026	BIP Wealth LLC	1,214	$0.68M	0.0%	N/A	0.002%
4/27/2026	World Investment Advisors	1,829	$1.03M	0.0%	-3.8%	0.002%
4/27/2026	Turtle Creek Wealth Advisors LLC	718	$0.40M	0.0%	-29.9%	0.001%
4/27/2026	New York State Teachers Retirement System	67,154	$37.73M	0.1%	+0.9%	0.085%
4/27/2026	Private Advisor Group LLC	2,506	$1.41M	0.0%	+39.7%	0.003%
4/27/2026	Y Intercept Hong Kong Ltd	13,665	$7.68M	0.1%	+149.2%	0.017%
4/27/2026	Fjarde AP Fonden Fourth Swedish National Pension Fund	41,412	$23.27M	0.1%	+72.8%	0.052%
4/27/2026	Elevation Point Wealth Partners LLC	1,709	$0.96M	0.0%	+96.9%	0.002%
4/25/2026	Boston Trust Walden Corp	10,645	$5.98M	0.0%	N/A	0.013%
4/25/2026	Keybank National Association OH	21,083	$11.85M	0.0%	-0.6%	0.027%
4/24/2026	Essex Financial Services Inc.	1,628	$0.92M	0.1%	+11.2%	0.002%
4/24/2026	CHICAGO TRUST Co NA	5,793	$3.26M	0.5%	+61.5%	0.007%
4/24/2026	Conestoga Capital Advisors LLC	790	$0.44M	0.0%	-34.4%	0.001%
4/24/2026	USS Investment Management Ltd	16,699	$9.38M	0.0%	+2.5%	0.021%
4/24/2026	IFM Investors Pty Ltd	18,057	$10.15M	0.1%	+3.4%	0.023%
4/24/2026	iA Global Asset Management Inc.	15,828	$8.89M	0.1%	+5.2%	0.020%
4/24/2026	Wendell David Associates Inc.	11,068	$6.22M	0.7%	-10.1%	0.014%
4/23/2026	Premier Path Wealth Partners LLC	554	$0.31M	0.0%	+8.2%	0.001%
4/23/2026	Mayflower Financial Advisors LLC	570	$0.32M	0.0%	+6.5%	0.001%
4/23/2026	Spinnaker Trust	6,072	$3.41M	0.2%	-6.8%	0.008%
4/23/2026	Inspire Investing LLC	12,266	$6.89M	0.6%	-1.9%	0.015%
4/23/2026	Lansforsakringar Fondforvaltning AB publ	25,927	$14.57M	0.1%	-1.7%	0.033%
4/23/2026	Bigelow Investment Advisors LLC	1,368	$0.77M	0.3%	+2.4%	0.002%
4/23/2026	Apollon Wealth Management LLC	5,946	$3.34M	0.1%	+4.7%	0.007%
4/22/2026	Janney Montgomery Scott LLC	12,422	$6.98M	0.0%	+1.7%	0.016%
4/22/2026	Pictet Asset Management Holding SA	287,937	$161.76M	0.2%	+67.2%	0.363%
4/22/2026	Sterling Capital Management LLC	3,293	$1.85M	0.0%	-35.1%	0.004%
4/21/2026	Aaron Wealth Advisors LLC	889	$0.50M	0.0%	-33.2%	0.001%
4/21/2026	Louisiana State Employees Retirement System	9,300	$5.23M	0.1%	N/A	0.012%
4/21/2026	Penobscot Wealth Management	2,193	$1.23M	0.4%	-4.9%	0.003%
4/20/2026	Kestra Private Wealth Services LLC	510	$0.29M	0.0%	-19.4%	0.001%
4/20/2026	Norway Savings Bank	4,656	$2.62M	1.2%	+0.5%	0.006%
4/20/2026	Ritholtz Wealth Management	8,643	$4.86M	0.1%	-5.8%	0.011%

Data available starting January 2016

IDEXX Laboratories, Inc. develops, manufactures, and distributes products primarily for the companion animal veterinary, livestock and poultry, dairy, and water testing markets in Africa, the Asia Pacific, Canada, Europe, Latin America, and internationally. The company operates through three segments: Companion Animal Group; Water Quality Products; and Livestock, Poultry and Dairy. It also 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 diagnostic instruments, and services for biomedical research community. In addition, the company offers diagnostic and health-monitoring products for livestock, poultry, and dairy; products that test water for various microbiological contaminants; point-of-care electrolytes and blood gas analyzers; in-clinic chemistry, blood and urine chemistry, hematology, immunoassay, urinalysis, and coagulation analyzers; and SNAP rapid assays test kits. Further, 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; and veterinary software and services for independent veterinary clinics and corporate groups. Additionally, the company offers human medical point-of-care products and laboratory diagnostics services. 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.

Today's Range

Now: $577.48

$550.00

$584.72

50 Day Range

MA: $589.55

$553.66

$660.71

52 Week Range

Now: $577.48

$465.00

$769.98

Volume

302,562 shs

Average Volume

522,207 shs

Market Capitalization

$45.87 billion

P/E Ratio

44.18

Dividend Yield

N/A

Beta

1.58

Who are the company insiders with the largest holdings of IDEXX Laboratories?: IDEXX Laboratories' top insider investors include:
Jonathan W Ayers (CEO)
Jonathan W Ayers (Chairman)
Jonathan W Ayers (Insider)
Jonathan W Ayers (Director)
Daniel M Junius (Director)
Jonathan Jay Mazelsky (CEO)
William T End (Director)
Brian P Mckeon (CFO)
Brian P Mckeon (VP)
Michael J Phd Williams (EVP)
Learn More about top insider investors at IDEXX Laboratories.
Who are the major institutional investors of IDEXX Laboratories?: IDEXX Laboratories' top institutional shareholders include:
Principal Financial Group Inc. — 1.11%
Montrusco Bolton Investments Inc. — 0.43%
Pictet Asset Management Holding SA — 0.36%
Sumitomo Mitsui Trust Group Inc. — 0.25%
Welch & Forbes LLC — 0.21%
Stephens Investment Management Group LLC — 0.13%
Learn More about top institutional investors of IDEXX Laboratories stock.
Which institutional investors are selling IDEXX Laboratories stock?: During the previous quarter, IDXX stock was sold by these institutional investors:
Principal Financial Group Inc.
SG Americas Securities LLC
AEGON ASSET MANAGEMENT UK Plc
Sumitomo Mitsui Trust Group Inc.
Riverbridge Partners LLC
Walter Public Investments Inc.
Kornitzer Capital Management Inc. KS
BI Asset Management Fondsmaeglerselskab A S
During the previous year, company insiders that have sold IDEXX Laboratories company stock include:
Jonathan Jay Mazelsky (CEO)
Nimrata Hunt (EVP)
Michael G Erickson (EVP)
George Fennell (EVP)
Michael Lane (EVP)
Sharon E Underberg (EVP)
M Anne Szostak (Director)
Sophie V Vandebroek (Director)
Learn More investors selling IDEXX Laboratories stock.
Which institutional investors are buying IDEXX Laboratories stock?: In the last quarter, IDXX stock was purchased by institutional investors including:
Montrusco Bolton Investments Inc.
Pictet Asset Management Holding SA
OP Asset Management Ltd
Fjarde AP Fonden Fourth Swedish National Pension Fund
Fifth Third Bancorp
Candriam S.C.A.
Boston Trust Walden Corp
Assenagon Asset Management S.A.