IDXX Insider Trading

Insider Trading Chart
Insider Trading History
Frequently Asked Questions
About

Insider Ownership Percentage: 0.98%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $48,122,012.42

IDEXX Laboratories Insider Trading History Chart

IDEXX Laboratories Share Price & Price History

^$717.47

▼ -8.46 (-1.17%)

As of 12/4/2025 05:00 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
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
5/4/2023	Sophie V Vandebroek	Director	Sell	2,187	$469.02	$1,025,746.74	872
2/14/2023	Kathy V Turner	SVP	Sell	2,000	$504.59	$1,009,180.00	7,380
2/9/2023	Kathy V Turner	SVP	Sell	1,000	$505.04	$505,040.00	6,941
12/5/2022	Daniel M Junius	Director	Sell	3,046	$424.91	$1,294,275.86	2,968
12/2/2022	M. Anne Szostak	Director	Sell	740	$428.55	$317,127.00	1,260

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
12/2/2025	Allworth Financial LP	4,697	$3M	0.0%	+0.5%	0.006%
12/2/2025	IFP Advisors Inc	378	$0.24M	0.0%	-36.1%	0.000%
12/2/2025	Swiss Life Asset Management Ltd	26,540	$16.96M	0.1%	+23.7%	0.033%
12/1/2025	CMC Financial Group	469	$0.30M	0.6%	N/A	0.001%
12/1/2025	Groupama Asset Managment	1,367	$0.87M	0.0%	N/A	0.002%
11/26/2025	Lantern Wealth Advisors LLC	380	$0.24M	0.1%	N/A	0.000%
11/25/2025	Alexander Labrunerie & CO. Inc.	358	$0.23M	0.1%	N/A	0.000%
11/24/2025	CIBC Private Wealth Group LLC	370,539	$236.73M	0.4%	-1.1%	0.464%
11/21/2025	CIBC Bancorp USA Inc.	13,983	$8.93M	0.0%	N/A	0.018%
11/21/2025	Maple Capital Management Inc.	529	$0.34M	0.0%	-6.9%	0.001%
11/21/2025	Achmea Investment Management B.V.	17,769	$11.35M	0.1%	+319.9%	0.022%
11/20/2025	Centaurus Financial Inc.	730	$0.47M	0.0%	-3.2%	0.001%
11/20/2025	Wilmington Savings Fund Society FSB	490	$0.31M	0.0%	-76.3%	0.001%
11/19/2025	Center For Asset Management LLC	391	$0.25M	0.1%	N/A	0.000%
11/19/2025	Faithward Advisors LLC	5,761	$3.68M	0.5%	N/A	0.007%
11/19/2025	Captrust Financial Advisors	9,063	$5.79M	0.0%	-10.6%	0.011%
11/19/2025	Penobscot Wealth Management	2,337	$1.49M	0.5%	-19.1%	0.003%
11/19/2025	Coldstream Capital Management Inc.	1,747	$1.12M	0.0%	+10.2%	0.002%
11/19/2025	Danske Bank A S	39,955	$25.53M	0.1%	N/A	0.050%
11/19/2025	Caitong International Asset Management Co. Ltd	56	$36K	0.0%	N/A	0.000%
11/19/2025	Stance Capital LLC	6,987	$4.46M	1.6%	+302.7%	0.009%
11/18/2025	Dorsey Wright & Associates	3,601	$2.30M	0.5%	N/A	0.005%
11/18/2025	Fulcrum Asset Management LLP	139	$89K	0.1%	N/A	0.000%
11/17/2025	Hancock Whitney Corp	3,133	$2M	0.0%	+8.3%	0.004%
11/17/2025	Peloton Wealth Strategists	2,873	$1.84M	0.7%	-5.6%	0.004%
11/17/2025	Financial Engines Advisors L.L.C.	561	$0.36M	0.0%	-19.7%	0.001%
11/17/2025	Keystone Financial Group	733	$0.47M	0.0%	N/A	0.001%
11/17/2025	NewEdge Advisors LLC	2,680	$1.71M	0.0%	+1.1%	0.003%
11/17/2025	First Foundation Advisors	7,701	$4.92M	0.2%	-9.8%	0.010%
11/17/2025	CANADA LIFE ASSURANCE Co	77,255	$48.70M	0.1%	+3.4%	0.097%
11/17/2025	Williams Jones Wealth Management LLC.	272,905	$174.36M	2.0%	-1.7%	0.342%
11/17/2025	Williamson Legacy Group LLC	1,456	$0.93M	0.7%	N/A	0.002%
11/17/2025	Woodline Partners LP	10,574	$6.76M	0.0%	+21.6%	0.013%
11/17/2025	Dark Forest Capital Management LP	2,580	$1.65M	0.0%	-72.6%	0.003%
11/17/2025	American Trust	1,940	$1.24M	0.1%	+17.1%	0.002%
11/17/2025	Pin Oak Investment Advisors Inc.	94	$60K	0.0%	N/A	0.000%
11/17/2025	Zurich Insurance Group Ltd FI	224,968	$143.73M	1.0%	N/A	0.282%
11/17/2025	United Capital Financial Advisors LLC	2,535	$1.62M	0.0%	+24.6%	0.003%
11/17/2025	Utah Retirement Systems	13,376	$8.55M	0.1%	+0.1%	0.017%
11/17/2025	Virtus Advisers LLC	41	$26K	0.0%	N/A	0.000%
11/17/2025	Voleon Capital Management LP	1,099	$0.70M	0.0%	+76.1%	0.001%
11/17/2025	Verition Fund Management LLC	1,925	$1.23M	0.0%	-89.2%	0.002%
11/17/2025	Tidal Investments LLC	36,101	$23.07M	0.0%	+250.9%	0.045%
11/17/2025	State Street Corp	3,517,670	$2.25B	0.1%	-1.0%	4.405%
11/17/2025	Sandler Capital Management	2,360	$1.51M	0.4%	N/A	0.003%
11/17/2025	Shelton Capital Management	9,412	$6.01M	0.1%	-2.4%	0.012%
11/17/2025	Public Employees Retirement System of Ohio	29,360	$18.76M	0.1%	+5.9%	0.037%
11/17/2025	Nomura Holdings Inc.	3,740	$2.39M	0.0%	+307.9%	0.005%
11/17/2025	Northwestern Mutual Wealth Management Co.	2,271	$1.45M	0.0%	+12.5%	0.003%
11/17/2025	Northern Trust Corp	942,368	$602.07M	0.1%	-1.5%	1.180%
11/17/2025	Norinchukin Bank The	7,406	$4.73M	0.1%	-3.2%	0.009%
11/17/2025	Mariner LLC	19,303	$12.33M	0.0%	+3.4%	0.024%
11/17/2025	Mairs & Power Inc.	2,144	$1.37M	0.0%	-3.6%	0.003%
11/17/2025	Mercer Global Advisors Inc. ADV	6,587	$4.21M	0.0%	+34.5%	0.008%
11/17/2025	National Bank of Canada FI	46,708	$29.84M	0.0%	-41.7%	0.058%
11/17/2025	Mirabella Financial Services LLP	4,401	$2.81M	0.1%	+156.2%	0.006%
11/17/2025	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	51,868	$33.14M	0.1%	-10.7%	0.065%
11/17/2025	Moneta Group Investment Advisors LLC	4,933	$3.15M	0.0%	-4.3%	0.006%
11/17/2025	L2 Asset Management LLC	374	$0.24M	0.0%	N/A	0.000%
11/17/2025	LRT Capital Management LLC	1,188	$0.76M	0.5%	N/A	0.001%
11/17/2025	Laird Norton Wetherby Wealth Management LLC	1,396	$0.89M	0.0%	-4.3%	0.002%
11/17/2025	Larson Financial Group LLC	349	$0.22M	0.0%	-59.0%	0.000%
11/17/2025	Lido Advisors LLC	4,066	$2.60M	0.0%	+105.8%	0.005%
11/17/2025	Integrated Wealth Concepts LLC	13,103	$8.37M	0.1%	-10.5%	0.016%
11/17/2025	JPL Wealth Management LLC	106	$68K	0.0%	N/A	0.000%
11/17/2025	Hilltop Holdings Inc.	1,745	$1.12M	0.1%	-13.8%	0.002%
11/17/2025	Gotham Asset Management LLC	48,643	$31.08M	0.1%	+40.4%	0.061%
11/17/2025	Fred Alger Management LLC	27,075	$17.30M	0.1%	+60.8%	0.034%
11/17/2025	Focus Partners Wealth	51,918	$33.17M	0.1%	+1.4%	0.065%
11/17/2025	EFG Asset Management Americas Corp.	5,775	$3.69M	0.6%	+3.3%	0.007%
11/17/2025	Element Capital Management LLC	793	$0.51M	0.7%	N/A	0.001%
11/17/2025	Elevation Point Wealth Partners LLC	524	$0.34M	0.0%	+682.1%	0.001%
11/17/2025	Brevan Howard Capital Management LP	3,030	$1.94M	0.0%	-65.0%	0.004%
11/17/2025	Chevy Chase Trust Holdings LLC	40,845	$26.10M	0.1%	-3.9%	0.051%
11/17/2025	Ausdal Financial Partners Inc.	692	$0.44M	0.0%	+21.6%	0.001%
11/17/2025	Azimuth Capital Investment Management LLC	31,962	$20.42M	0.7%	+34.6%	0.040%
11/17/2025	Bamco Inc. NY	1,884,129	$1.20B	3.2%	-7.3%	2.360%
11/17/2025	Banco Bilbao Vizcaya Argentaria S.A.	14,140	$9.01M	0.1%	+342.3%	0.018%
11/17/2025	California Public Employees Retirement System	157,570	$100.67M	0.1%	+6.2%	0.197%
11/17/2025	Chilton Investment Co. Inc.	15,032	$9.60M	0.2%	-3.5%	0.019%
11/17/2025	Bank of America Corp DE	488,338	$311.99M	0.0%	-1.2%	0.612%
11/17/2025	Bank of Nova Scotia	9,871	$6.31M	0.0%	-65.2%	0.012%
11/17/2025	Aquatic Capital Management LLC	8,299	$5.30M	0.1%	N/A	0.010%
11/17/2025	Arkos Global Advisors	541	$0.35M	0.0%	N/A	0.001%
11/17/2025	Algert Global LLC	687	$0.44M	0.0%	N/A	0.001%
11/17/2025	Alliancebernstein L.P.	99,111	$63.32M	0.0%	-8.9%	0.124%
11/17/2025	Ameriprise Financial Inc.	197,113	$125.96M	0.0%	-8.7%	0.247%
11/14/2025	Schonfeld Strategic Advisors LLC	8,291	$5.30M	0.0%	+1,006.9%	0.010%
11/14/2025	Creative Planning	33,269	$21.26M	0.0%	+14.5%	0.042%
11/14/2025	Lazard Asset Management LLC	15,547	$9.93M	0.0%	+60.2%	0.019%
11/14/2025	SummitTX Capital L.P.	1,176	$0.75M	0.0%	N/A	0.001%
11/14/2025	AQR Capital Management LLC	135,154	$85.40M	0.1%	-39.5%	0.169%
11/14/2025	17 Capital Partners LLC	1,473	$0.94M	0.5%	+28.6%	0.002%
11/14/2025	Credit Agricole S A	8,182	$5.23M	0.0%	N/A	0.010%
11/14/2025	Raymond James Financial Inc.	272,591	$174.16M	0.1%	+29.3%	0.341%
11/14/2025	Kelleher Financial Advisors	832	$0.53M	0.1%	+3.1%	0.001%
11/14/2025	Bellevue Group AG	76,587	$48.93M	1.0%	+0.1%	0.096%
11/14/2025	Arlington Capital Management Inc.	422	$0.27M	0.2%	N/A	0.001%
11/14/2025	Amundi	592,599	$372.02M	0.1%	-12.3%	0.742%
11/14/2025	Caisse de depot et placement du Quebec	154,206	$98.52M	0.2%	-14.8%	0.193%

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: $717.47

$714.17

$732.03

50 Day Range

MA: $674.30

$616.15

$766.68

52 Week Range

Now: $717.47

$356.14

$769.98

Volume

526,184 shs

Average Volume

603,125 shs

Market Capitalization

$57.29 billion

P/E Ratio

56.90

Dividend Yield

N/A

Beta

1.67

Who are the company insiders with the largest holdings of IDEXX Laboratories?: IDEXX Laboratories' top insider investors include:
Jonathan Jay Mazelsky (CEO)
Brian P Mckeon (CFO)
Nimrata Hunt (EVP)
Michael G Erickson (EVP)
James F Polewaczyk (EVP)
George Fennell (EVP)
Michael Lane (EVP)
George Fennell (SVP)
Sharon E Underberg (EVP)
M Anne Szostak (Director)
Sophie V Vandebroek (Director)
Bruce L Claflin (Director)
Learn More about top insider investors at IDEXX Laboratories.
Who are the major institutional investors of IDEXX Laboratories?: IDEXX Laboratories' top institutional shareholders include:
Vanguard Group Inc. — 12.45%
State Street Corp — 4.41%
Fundsmith LLP — 3.27%
Bank of New York Mellon Corp — 2.57%
Bamco Inc. NY — 2.36%
Invesco Ltd. — 1.65%
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:
Generation Investment Management LLP
Vontobel Holding Ltd.
William Blair Investment Management LLC
Montrusco Bolton Investments Inc.
UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC
Fundsmith Investment Services LTD.
Bamco Inc. NY
American Century Companies Inc.
During the previous year, company insiders that have sold IDEXX Laboratories company stock include:
Jonathan Jay Mazelsky (CEO)
Brian P Mckeon (CFO)
Nimrata Hunt (EVP)
Michael G Erickson (EVP)
James F Polewaczyk (EVP)
George Fennell (EVP)
Michael Lane (EVP)
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:
Bank of New York Mellon Corp
JPMorgan Chase & Co.
Zurich Insurance Group Ltd FI
Principal Financial Group Inc.
Invesco Ltd.
Railway Pension Investments Ltd
Westfield Capital Management Co. LP
Vanguard Group Inc.