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IDXX Insider Trading

Insider Ownership Percentage: 0.98%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $71,967,476.48

IDEXX Laboratories Insider Trading History Chart

This chart shows the insider buying and selling history at IDEXX Laboratories by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

IDEXX Laboratories Share Price & Price History

Current Price: $577.26
Price Change: ▼ Price Decrease of -2.59 (-0.45%)
As of 03/20/2026 05:00 PM ET

This chart shows the closing price history over time for IDXX up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

IDEXX Laboratories Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
3/3/2026Nimrata HuntEVPSell1,758$634.57$1,115,574.0618,141View SEC Filing Icon  
2/26/2026Jonathan Jay MazelskyCEOSell23,326$657.55$15,338,011.3083,606View SEC Filing Icon  
2/26/2026Nimrata HuntEVPSell2,693$661.54$1,781,527.2219,899View SEC Filing Icon  
2/17/2026Michael G. EricksonEVPSell5,371$627.38$3,369,657.9812,693View SEC Filing Icon  
2/17/2026Sophie V VandebroekDirectorSell1,464$628.62$920,299.68648View SEC Filing Icon  
2/10/2026George FennellEVPSell11,345$646.72$7,337,038.409,823View SEC Filing Icon  
11/7/2025Nimrata HuntEVPSell9,425$703.34$6,628,979.5021,149View SEC Filing Icon  
8/22/2025M. Anne SzostakDirectorSell2,187$647.33$1,415,710.71262View SEC Filing Icon  
8/12/2025Michael G. EricksonEVPSell406$649.96$263,883.7611,287View SEC Filing Icon  
8/11/2025Nimrata HuntEVPSell1,200$656.53$787,836.0016,807View SEC Filing Icon  
8/8/2025Sharon E. UnderbergEVPSell5,450$651.60$3,551,220.006,156View SEC Filing Icon  
8/6/2025Jonathan Jay MazelskyCEOSell29,260$631.98$18,491,734.8083,311View SEC Filing Icon  
8/6/2025Michael LaneEVPSell8,411$627.74$5,279,921.147,132View SEC Filing Icon  
8/6/2025Nimrata HuntEVPSell7,143$630.43$4,503,161.4918,007View SEC Filing Icon  
5/21/2025M. Anne SzostakDirectorSell1,046$513.74$537,372.04262View SEC Filing Icon  
5/21/2025M. Anne SzostakDirectorSell1,260$512.34$645,548.401,801View SEC Filing Icon  
2/10/2025George FennellEVPSell9,986$462.53$4,618,824.588,176View SEC Filing Icon  
2/7/2025M. Anne SzostakDirectorSell3,000$465.94$1,397,820.003,061View SEC Filing Icon  
11/27/2024Sophie V VandebroekDirectorSell344$420.44$144,631.36905View SEC Filing Icon  
5/17/2024Bruce L. ClaflinDirectorSell200$540.80$108,160.00161View SEC Filing Icon  
2/8/2024George FennellSVPSell8,198$573.87$4,704,586.266,712View SEC Filing Icon  
2/7/2024Brian P. MckeonCFOSell23,326$570.01$13,296,053.2629,718View SEC Filing Icon  
2/7/2024Jonathan Jay MazelskyCEOSell12,000$572.61$6,871,320.0079,247View SEC Filing Icon  
12/7/2023James F PolewaczykEVPSell11,636$521.79$6,071,548.4410,050View SEC Filing Icon  
12/4/2023Jonathan Jay MazelskyCEOSell7,128$513.05$3,657,020.4079,233View SEC Filing Icon  
8/31/2023Jonathan Jay MazelskyCEOSell13,424$512.01$6,873,222.2472,925View SEC Filing Icon  
8/29/2023James F PolewaczykEVPSell22,909$510.56$11,696,419.0410,038View SEC Filing Icon  
8/3/2023Michael LaneEVPSell16,027$510.00$8,173,770.004,034View SEC Filing Icon  
5/18/2023Jonathan W AyersDirectorSell10,000$489.23$4,892,300.00137,039View SEC Filing Icon  
5/5/2023Michael LaneEVPSell1,000$484.00$484,000.004,022View SEC Filing Icon  
5/4/2023Sophie V VandebroekDirectorSell2,187$469.02$1,025,746.74872View SEC Filing Icon  
See Full Table

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

This chart shows the instiutional buying and selling at IDXX by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

IDEXX Laboratories Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
3/17/2026Stance Capital LLC400$0.27M0.1%-94.3%0.001%Search for SEC Filing on Google Icon
3/17/2026Rockefeller Capital Management L.P.53,109$35.93M0.1%-1.2%0.067%Search for SEC Filing on Google Icon
3/13/2026World Investment Advisors1,902$1.29M0.0%+126.2%0.002%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC114,625$77.63M0.1%-1.3%0.144%Search for SEC Filing on Google Icon
3/6/2026Union Savings Bank3,500$2.37M1.0%N/A0.004%Search for SEC Filing on Google Icon
3/6/2026Hsbc Holdings PLC159,635$108.05M0.1%-18.8%0.200%Search for SEC Filing on Google Icon
3/4/2026SHP Wealth Management39$26K0.0%N/A0.000%Search for SEC Filing on Google Icon
3/3/2026Bank of Hawaii1,475$1M0.0%-53.9%0.002%Search for SEC Filing on Google Icon
3/2/2026Reflection Asset Management78$53K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/27/2026Groupama Asset Managment1,266$0.86M0.0%-7.4%0.002%Search for SEC Filing on Google Icon
2/26/2026BDFS Capital LLC992$0.67M0.3%N/A0.001%Search for SEC Filing on Google Icon
2/26/2026Banque Transatlantique SA4,430$3M0.1%-1.2%0.006%Search for SEC Filing on Google Icon
2/25/2026MidFirst Bank4,375$2.96M0.2%N/A0.005%Search for SEC Filing on Google Icon
2/24/2026Pacer Advisors Inc.13,965$9.45M0.0%+10.0%0.017%Search for SEC Filing on Google Icon
2/24/2026Titan Investment Management LLC2,476$1.68M1.5%N/A0.003%Search for SEC Filing on Google Icon
2/23/2026Virtu Financial LLC3,584$2.42M0.1%N/A0.004%Search for SEC Filing on Google Icon
2/23/2026MV Capital Management Inc.68$46K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/20/2026Dorsey Wright & Associates3,577$2.42M0.5%-0.7%0.004%Search for SEC Filing on Google Icon
2/19/2026Compound Planning Inc.1,802$1.22M0.0%+51.9%0.002%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.1,502,218$1.02B0.2%+13.8%1.881%Search for SEC Filing on Google Icon
2/19/2026Axxcess Wealth Management LLC1,707$1.16M0.0%+37.4%0.002%Search for SEC Filing on Google Icon
2/19/2026Birchwood Financial Partners Inc.121$82K0.1%N/A0.000%Search for SEC Filing on Google Icon
2/19/2026Corient Private Wealth LLC184,587$124.88M0.1%+58.9%0.231%Search for SEC Filing on Google Icon
2/18/2026Mercer Global Advisors Inc. ADV7,346$4.97M0.0%+11.5%0.009%Search for SEC Filing on Google Icon
2/18/2026Raymond James Financial Inc.256,352$174.33M0.1%-6.0%0.321%Search for SEC Filing on Google Icon
2/18/2026Achmea Investment Management B.V.42,044$28.44M0.7%+136.6%0.053%Search for SEC Filing on Google Icon
2/18/2026Vident Advisory LLC3,211$2.17M0.0%-63.0%0.004%Search for SEC Filing on Google Icon
2/18/2026Beacon Pointe Advisors LLC804$0.54M0.0%+28.4%0.001%Search for SEC Filing on Google Icon
2/18/2026First Citizens Bank & Trust Co.28,894$19.55M0.3%+40.8%0.036%Search for SEC Filing on Google Icon
2/18/2026Wahed Invest LLC2,095$1.42M0.2%-5.0%0.003%Search for SEC Filing on Google Icon
2/18/2026State of Tennessee Department of Treasury16,721$11.21M0.0%-14.1%0.021%Search for SEC Filing on Google Icon
2/18/2026EP Wealth Advisors LLC5,617$3.80M0.0%N/A0.007%Search for SEC Filing on Google Icon
2/18/2026Mackenzie Financial Corp46,189$31.45M0.0%-55.5%0.058%Search for SEC Filing on Google Icon
2/18/2026NewEdge Advisors LLC9,460$6.40M0.0%+253.0%0.012%Search for SEC Filing on Google Icon
2/18/2026Zurich Insurance Group Ltd FI65,870$44.56M0.3%-70.7%0.082%Search for SEC Filing on Google Icon
2/18/2026Utah Retirement Systems13,319$9.01M0.1%-0.4%0.017%Search for SEC Filing on Google Icon
2/18/2026VestGen Advisors LLC2,244$1.52M0.1%+18.7%0.003%Search for SEC Filing on Google Icon
2/18/2026Virtus Investment Advisers LLC3,007$2.03M0.6%-6.9%0.004%Search for SEC Filing on Google Icon
2/18/2026Wellington Management Group LLP779,214$527.16M0.2%+318.1%0.976%Search for SEC Filing on Google Icon
2/18/2026Toronto Dominion Bank28,019$18.96M0.0%-12.9%0.035%Search for SEC Filing on Google Icon
2/18/2026Summit Securities Group LLC241$0.16M0.0%+792.6%0.000%Search for SEC Filing on Google Icon
2/18/2026Occudo Quantitative Strategies LP341$0.23M0.0%-96.0%0.000%Search for SEC Filing on Google Icon
2/18/2026Oxford Asset Management LLP307$0.21M0.1%N/A0.000%Search for SEC Filing on Google Icon
2/18/2026Main Street Financial Solutions LLC537$0.36M0.0%-41.9%0.001%Search for SEC Filing on Google Icon
2/18/2026Man Group plc25,412$17.19M0.0%+12.7%0.032%Search for SEC Filing on Google Icon
2/18/2026Inspire Investing LLC12,501$8.46M0.8%+47.6%0.016%Search for SEC Filing on Google Icon
2/18/2026Investment Management Corp of Ontario52,069$35.23M0.5%+6.7%0.065%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC12,539$8.48M0.0%-0.3%0.016%Search for SEC Filing on Google Icon
2/18/2026Gotham Asset Management LLC59,738$40.42M0.1%+22.8%0.075%Search for SEC Filing on Google Icon
2/18/2026Evolve Private Wealth LLC620$0.42M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/18/2026First Manhattan CO. LLC.2,171$1.47M0.0%+139.9%0.003%Search for SEC Filing on Google Icon
2/18/2026Capitolis Liquid Global Markets LLC2,631$1.78M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/18/2026City National Bank of Florida MSD300$0.20M0.1%N/A0.000%Search for SEC Filing on Google Icon
2/18/2026Aureus Asset Management LLC755$0.51M0.0%-2.3%0.001%Search for SEC Filing on Google Icon
2/18/2026Bamco Inc. NY1,798,041$1.22B3.3%-4.6%2.252%Search for SEC Filing on Google Icon
2/18/2026Banco Bilbao Vizcaya Argentaria S.A.24,916$16.87M0.1%+76.2%0.031%Search for SEC Filing on Google Icon
2/18/2026Boothbay Fund Management LLC413$0.28M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/18/2026Bridgeway Capital Management LLC3,860$2.61M0.1%N/A0.005%Search for SEC Filing on Google Icon
2/18/2026American Trust1,885$1.28M0.1%-2.8%0.002%Search for SEC Filing on Google Icon
2/17/2026Guggenheim Capital LLC21,342$14.44M0.1%+7.0%0.027%Search for SEC Filing on Google Icon
2/17/2026Caisse de depot et placement du Quebec248,701$168.25M0.3%+61.3%0.311%Search for SEC Filing on Google Icon
2/17/2026American Capital Management Inc.181,745$122.96M5.4%-1.4%0.228%Search for SEC Filing on Google Icon
2/17/2026ADAR1 Capital Management LLC400$0.27M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/17/2026Integrated Advisors Network LLC338$0.23M0.0%-29.0%0.000%Search for SEC Filing on Google Icon
2/17/2026DV Equities LLC112$76K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC114,775$77.65M0.0%-15.1%0.144%Search for SEC Filing on Google Icon
2/17/2026EFG International AG18,437$12.47M0.2%N/A0.023%Search for SEC Filing on Google Icon
2/17/2026Lazard Asset Management LLC14,396$9.74M0.0%-7.4%0.018%Search for SEC Filing on Google Icon
2/17/2026Cetera Investment Advisers24,854$16.82M0.0%+10.8%0.031%Search for SEC Filing on Google Icon
2/17/2026DF Dent & Co. Inc.42,437$28.71M0.4%-4.5%0.053%Search for SEC Filing on Google Icon
2/17/2026Hilltop Holdings Inc.1,878$1.27M0.1%+7.6%0.002%Search for SEC Filing on Google Icon
2/17/2026Sandler Capital Management1,552$1.05M0.3%-34.2%0.002%Search for SEC Filing on Google Icon
2/17/2026Laird Norton Wetherby Trust Company LLC2,955$2M0.0%N/A0.004%Search for SEC Filing on Google Icon
2/17/2026TCW Group Inc.64,744$43.80M0.3%N/A0.081%Search for SEC Filing on Google Icon
2/17/2026Kovack Advisors Inc.2,881$1.95M0.1%+4.6%0.004%Search for SEC Filing on Google Icon
2/17/2026Amundi618,743$418.60M0.1%+4.4%0.775%Search for SEC Filing on Google Icon
2/17/2026FIL Ltd16,755$11.34M0.0%+9.8%0.021%Search for SEC Filing on Google Icon
2/17/2026Jump Financial LLC1,082$0.73M0.0%-84.7%0.001%Search for SEC Filing on Google Icon
2/17/2026Northern Trust Corp923,152$624.54M0.1%-2.0%1.156%Search for SEC Filing on Google Icon
2/17/2026Vinva Investment Management Ltd11,319$7.72M0.1%+48.6%0.014%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD952,223$644.21M0.1%+37.2%1.192%Search for SEC Filing on Google Icon
2/17/2026Osaic Holdings Inc.30,948$20.94M0.0%+88.6%0.039%Search for SEC Filing on Google Icon
2/17/2026Advisory Services Network LLC752$0.51M0.0%+2.5%0.001%Search for SEC Filing on Google Icon
2/17/2026Adage Capital Partners GP L.L.C.52,047$35.21M0.1%+45.9%0.065%Search for SEC Filing on Google Icon
2/17/2026Tower Research Capital LLC TRC 4,104$2.78M0.1%+76.4%0.005%Search for SEC Filing on Google Icon
2/17/2026Public Employees Retirement System of Ohio29,305$19.83M0.1%-0.2%0.037%Search for SEC Filing on Google Icon
2/17/2026California State Teachers Retirement System125,402$84.84M0.1%-1.0%0.157%Search for SEC Filing on Google Icon
2/17/2026Evercore Wealth Management LLC4,974$3.37M0.0%-1.0%0.006%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.193,997$131.40M0.1%+12.1%0.243%Search for SEC Filing on Google Icon
2/17/2026J. Stern & Co. LLP2,653,351$1.80B0.5%+23,694.7%3.323%Search for SEC Filing on Google Icon
2/17/2026Clark Capital Management Group Inc.371$0.25M0.0%N/A0.000%Search for SEC Filing on Google Icon
2/17/2026Kemnay Advisory Services Inc.80$54K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/17/2026Captrust Financial Advisors29,424$19.91M0.0%+224.7%0.037%Search for SEC Filing on Google Icon
2/17/2026Fred Alger Management LLC24,952$16.88M0.1%-7.8%0.031%Search for SEC Filing on Google Icon
2/17/2026&PARTNERS7,233$4.90M0.0%+13.3%0.009%Search for SEC Filing on Google Icon
2/17/2026Fundsmith Investment Services LTD.553,859$374.70M6.9%-19.5%0.694%Search for SEC Filing on Google Icon
2/17/2026Siemens Fonds Invest GmbH1,756$1.20M0.1%-22.7%0.002%Search for SEC Filing on Google Icon
2/17/2026ExodusPoint Capital Management LP22,386$15.15M0.1%N/A0.028%Search for SEC Filing on Google Icon
2/17/2026Peloton Wealth Strategists2,833$1.92M0.7%-1.4%0.004%Search for SEC Filing on Google Icon
2/17/2026Blair William & Co. IL1,001,375$677.46M1.8%-2.9%1.254%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
IDEXX Laboratories logo
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.
Read More on IDEXX Laboratories

Today's Range

Now: $577.26
Low: $569.89
High: $581.36

50 Day Range

MA: $645.73
Low: $571.21
High: $724.76

52 Week Range

Now: $577.26
Low: $356.14
High: $769.98

Volume

765,280 shs

Average Volume

532,620 shs

Market Capitalization

$45.90 billion

P/E Ratio

44.17

Dividend Yield

N/A

Beta

1.66

Who are the company insiders with the largest holdings of IDEXX Laboratories?

IDEXX Laboratories' top insider investors include:
  1. Jonathan Jay Mazelsky (CEO)
  2. Nimrata Hunt (EVP)
  3. Michael G Erickson (EVP)
  4. George Fennell (EVP)
  5. Michael Lane (EVP)
  6. Sharon E Underberg (EVP)
  7. M Anne Szostak (Director)
  8. Sophie V Vandebroek (Director)
  9. 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:
  1. Vanguard Group Inc. — 12.46%
  2. Elyxium Wealth LLC — 6.79%
  3. State Street Corp — 4.58%
  4. J. Stern & Co. LLP — 3.32%
  5. Geode Capital Management LLC — 3.24%
  6. Bamco Inc. NY — 2.25%
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:
  1. Macquarie Group Ltd.
  2. Bank of New York Mellon Corp
  3. Principal Financial Group Inc.
  4. JPMorgan Chase & Co.
  5. Polen Capital Management LLC
  6. Zurich Insurance Group Ltd FI
  7. Vontobel Holding Ltd.
  8. Fundsmith Investment Services LTD.
During the previous year, company insiders that have sold IDEXX Laboratories company stock include:
  1. Jonathan Jay Mazelsky (CEO)
  2. Nimrata Hunt (EVP)
  3. Michael G Erickson (EVP)
  4. George Fennell (EVP)
  5. Michael Lane (EVP)
  6. Sharon E Underberg (EVP)
  7. M Anne Szostak (Director)
  8. 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:
  1. Elyxium Wealth LLC
  2. J. Stern & Co. LLP
  3. Northwestern Mutual Wealth Management Co.
  4. Wellington Management Group LLP
  5. Norges Bank
  6. Arrowstreet Capital Limited Partnership
  7. Price T Rowe Associates Inc. MD
  8. AustralianSuper Pty Ltd