IDXX Insider Trading

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Insider Ownership Percentage: 0.98%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $48,266,643.78

IDEXX Laboratories Insider Trading History Chart

IDEXX Laboratories Share Price & Price History

^$689.93

▼ -11.55 (-1.65%)

As of 11/14/2025 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
12/1/2022	Kathy V Turner	SVP	Sell	3,000	$436.00	$1,308,000.00	6,923

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
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%
11/14/2025	American Capital Management Inc.	184,298	$117.75M	4.7%	-2.5%	0.231%
11/14/2025	Man Group plc	22,546	$14.40M	0.0%	-62.3%	0.028%
11/14/2025	Occudo Quantitative Strategies LP	8,530	$5.45M	0.7%	+213.3%	0.011%
11/14/2025	California State Teachers Retirement System	126,660	$80.92M	0.1%	-1.7%	0.159%
11/14/2025	Daiwa Securities Group Inc.	23,150	$14.79M	0.1%	+8.7%	0.029%
11/14/2025	One Capital Management LLC	324	$0.21M	0.0%	N/A	0.000%
11/14/2025	Zurcher Kantonalbank Zurich Cantonalbank	22,418	$14.32M	0.0%	+3.6%	0.028%
11/14/2025	DF Dent & Co. Inc.	44,447	$28.40M	0.4%	-3.8%	0.056%
11/14/2025	Scotia Capital Inc.	776	$0.50M	0.0%	-15.2%	0.001%
11/14/2025	Fiduciary Trust Co	8,065	$5.15M	0.1%	-3.3%	0.010%
11/14/2025	Brooklyn Investment Group	3,051	$1.95M	0.1%	+171.4%	0.004%
11/14/2025	UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC	875,549	$559.38M	0.1%	-18.2%	1.096%
11/14/2025	Tower Research Capital LLC TRC	2,326	$1.49M	0.0%	+104.2%	0.003%
11/14/2025	Vident Advisory LLC	8,681	$5.55M	0.1%	+199.7%	0.011%
11/14/2025	Ossiam	10,994	$7.02M	0.1%	+65.5%	0.014%
11/14/2025	Towarzystwo Funduszy Inwestycyjnych PZU SA	430	$0.28M	0.1%	+8.9%	0.001%
11/14/2025	Fundsmith Investment Services LTD.	688,357	$439.78M	6.9%	-18.5%	0.862%
11/14/2025	iSAM Funds UK Ltd	1,113	$0.71M	0.1%	-67.7%	0.001%
11/14/2025	Wellington Management Group LLP	186,380	$119.08M	0.0%	-1.0%	0.233%
11/14/2025	Fundsmith LLP	2,610,457	$1.67B	8.4%	-1.1%	3.269%
11/14/2025	NorthRock Partners LLC	2,104	$1.34M	0.0%	+10.4%	0.003%
11/14/2025	Harvest Fund Management Co. Ltd	7,815	$4.99M	0.2%	+26.8%	0.010%
11/14/2025	Prudential PLC	46,202	$29.52M	0.2%	-7.1%	0.058%
11/14/2025	Comerica Bank	27,132	$17.34M	0.1%	+42.0%	0.034%
11/14/2025	Main Street Research LLC	411	$0.26M	0.0%	N/A	0.001%
11/14/2025	Newbridge Financial Services Group Inc.	184	$0.12M	0.0%	+1,315.4%	0.000%
11/14/2025	Perbak Capital Partners LLP	1,228	$0.79M	0.1%	-80.7%	0.002%
11/14/2025	Brown Brothers Harriman & Co.	1,075	$0.69M	0.0%	+11.3%	0.001%
11/14/2025	Banque Transatlantique SA	4,485	$2.86M	0.1%	-11.9%	0.006%
11/14/2025	Chesapeake Capital Corp IL	989	$0.63M	0.6%	N/A	0.001%
11/14/2025	F m Investments LLC	27,215	$17.39M	0.7%	-0.4%	0.034%
11/14/2025	Glenmede Investment Management LP	18,754	$11.98M	0.1%	-5.7%	0.023%
11/13/2025	Jump Financial LLC	7,091	$4.53M	0.0%	+28.2%	0.009%
11/13/2025	Epoch Investment Partners Inc.	231,841	$148.12M	0.8%	-7.5%	0.290%
11/13/2025	Pathstone Holdings LLC	19,834	$12.67M	0.0%	+1.8%	0.025%
11/13/2025	BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp	11,559	$7.39M	0.0%	-9.3%	0.014%
11/13/2025	Eisler Capital Management Ltd.	320	$0.20M	0.0%	N/A	0.000%
11/13/2025	Kentucky Retirement Systems Insurance Trust Fund	2,124	$1.36M	0.1%	-3.9%	0.003%
11/13/2025	Entropy Technologies LP	768	$0.49M	0.0%	N/A	0.001%
11/13/2025	SeaCrest Wealth Management LLC	340	$0.21M	0.0%	N/A	0.000%
11/13/2025	Certuity LLC	343	$0.22M	0.0%	N/A	0.000%
11/13/2025	Johnson Financial Group Inc.	63	$40K	0.0%	+1,475.0%	0.000%
11/13/2025	Arrowstreet Capital Limited Partnership	185,094	$118.26M	0.1%	-10.2%	0.232%
11/13/2025	Invesco Ltd.	1,320,263	$843.50M	0.1%	+14.0%	1.653%
11/13/2025	Seven Mile Advisory	423	$0.27M	0.0%	N/A	0.001%
11/13/2025	Employees Retirement System of Texas	10,682	$6.83M	0.1%	+89.1%	0.013%
11/13/2025	Sei Investments Co.	103,396	$66.06M	0.1%	-14.3%	0.129%
11/13/2025	Douglass Winthrop Advisors LLC	1,619	$1.03M	0.0%	+1.2%	0.002%
11/13/2025	BOKF NA	2,704	$1.73M	0.0%	-3.7%	0.003%
11/13/2025	UBS Group AG	350,893	$224.18M	0.0%	-5.9%	0.439%
11/13/2025	Geneva Capital Management LLC	41,967	$26.81M	0.5%	-4.7%	0.053%
11/13/2025	Capital Fund Management S.A.	13,506	$8.63M	0.0%	+17.0%	0.017%
11/13/2025	Gordian Capital Singapore Pte Ltd	250	$0.16M	0.2%	-54.5%	0.000%
11/13/2025	Mackenzie Financial Corp	103,734	$66.28M	0.1%	-30.6%	0.130%
11/13/2025	Franklin Resources Inc.	572,978	$366.07M	0.1%	-3.3%	0.718%
11/13/2025	Silvant Capital Management LLC	11,117	$7.10M	0.3%	-8.6%	0.014%
11/13/2025	Van ECK Associates Corp	24,101	$15.40M	0.0%	+1.0%	0.030%
11/13/2025	Promus Capital LLC	2,451	$1.57M	1.0%	+1.9%	0.003%
11/13/2025	Capital Research Global Investors	690,601	$441.22M	0.1%	+0.8%	0.865%
11/13/2025	Bank of Montreal Can	139,126	$88.89M	0.0%	+14.9%	0.174%
11/13/2025	Legal & General Group Plc	675,535	$431.59M	0.1%	+4.1%	0.846%
11/13/2025	Banque Cantonale Vaudoise	4,363	$2.79M	0.1%	-5.7%	0.005%
11/13/2025	Vestcor Inc	3,772	$2.41M	0.1%	+77.8%	0.005%
11/13/2025	Swiss National Bank	231,900	$148.16M	0.1%	-5.5%	0.290%
11/13/2025	WINTON GROUP Ltd	2,089	$1.34M	0.0%	N/A	0.003%
11/13/2025	LGT Fund Management Co Ltd.	510	$0.32M	0.0%	-7.3%	0.001%
11/13/2025	LGT Group Foundation	1,231	$0.76M	0.0%	+5.7%	0.002%
11/13/2025	Russell Investments Group Ltd.	172,998	$110.44M	0.1%	-5.1%	0.217%
11/13/2025	Inceptionr LLC	582	$0.37M	0.1%	N/A	0.001%
11/13/2025	Schroder Investment Management Group	323,305	$203.86M	0.2%	+2.4%	0.405%
11/13/2025	Gerber Kawasaki Wealth & Investment Management	497	$0.32M	0.0%	+5.5%	0.001%
11/13/2025	Private Advisor Group LLC	2,245	$1.43M	0.0%	-3.8%	0.003%
11/13/2025	PFG Advisors	12,032	$7.69M	0.3%	+4.0%	0.015%
11/13/2025	Diversify Advisory Services LLC	1,888	$1.21M	0.0%	-12.6%	0.002%
11/13/2025	Jefferies Financial Group Inc.	20,465	$13.08M	0.1%	-5.4%	0.026%
11/13/2025	Pinnacle Associates Ltd.	1,209	$0.77M	0.0%	+2.4%	0.002%
11/13/2025	B. Metzler seel. Sohn & Co. AG	16,947	$10.83M	0.1%	-20.6%	0.021%
11/13/2025	Rathbones Group PLC	117,569	$75.11M	0.3%	-14.3%	0.147%
11/13/2025	Vinva Investment Management Ltd	7,617	$4.80M	0.1%	-74.4%	0.010%
11/13/2025	Quantum Capital Management LLC NJ	77,825	$49.72M	5.5%	-25.5%	0.097%
11/13/2025	Parallel Advisors LLC	2,597	$1.66M	0.0%	+1.1%	0.003%
11/13/2025	Meiji Yasuda Life Insurance Co	409	$0.26M	0.0%	N/A	0.001%
11/13/2025	Meiji Yasuda Asset Management Co Ltd.	449	$0.29M	0.0%	-7.2%	0.001%
11/13/2025	Natixis Advisors LLC	46,245	$29.55M	0.0%	-2.5%	0.058%
11/13/2025	United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund	4,100	$2.62M	0.1%	+127.8%	0.005%
11/13/2025	Korea Investment CORP	47,264	$30.20M	0.1%	-25.3%	0.059%
11/13/2025	Grantham Mayo Van Otterloo & Co. LLC	1,485	$0.95M	0.0%	N/A	0.002%

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: $689.93

$688.66

$699.66

50 Day Range

MA: $651.74

$616.15

$722.94

52 Week Range

Now: $689.93

$356.14

$735.00

Volume

468,534 shs

Average Volume

651,454 shs

Market Capitalization

$55.09 billion

P/E Ratio

57.45

Dividend Yield

N/A

Beta

1.62

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%
Fundsmith LLP — 3.27%
Bank of New York Mellon Corp — 2.57%
Invesco Ltd. — 1.65%
Principal Financial Group Inc. — 1.64%
Blair William & Co. IL — 1.29%
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.
American Century Companies Inc.
Flossbach Von Storch SE
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)
George Fennell (SVP)
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.
Principal Financial Group Inc.
Invesco Ltd.
Railway Pension Investments Ltd
Westfield Capital Management Co. LP
Vanguard Group Inc.
Federated Hermes Inc.