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IDXX Insider Trading

Insider Ownership Percentage: 0.79%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $70,784,556.04

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: $562.09
Price Change: +0.30 (1.20%)
As of 06/18/2026 04:00 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  
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
6/18/2026Pacer Advisors Inc.41,003$23.04M0.0%+193.6%0.052%Search for SEC Filing on Google Icon
6/9/2026Rathbones Group PLC121,511$68.28M0.3%+11.6%0.154%Search for SEC Filing on Google Icon
6/3/2026Parallel Advisors LLC2,664$1.50M0.0%-1.2%0.003%Search for SEC Filing on Google Icon
6/3/2026NewEdge Advisors LLC15,221$8.55M0.0%+60.9%0.019%Search for SEC Filing on Google Icon
6/1/2026Keel Point LLC410$0.23M0.0%-34.7%0.001%Search for SEC Filing on Google Icon
5/26/2026Glenmede Trust Co. NA15,104$8.49M0.0%-15.6%0.019%Search for SEC Filing on Google Icon
5/22/2026Groupama Asset Managment1,052$0.59M0.0%-16.9%0.001%Search for SEC Filing on Google Icon
5/22/2026Segall Bryant & Hamill LLC27,506$16.52M0.2%N/A0.035%Search for SEC Filing on Google Icon
5/21/2026Groupe la Francaise6,461$3.63M0.0%-9.3%0.008%Search for SEC Filing on Google Icon
5/20/2026Liontrust Investment Partners LLP177,337$99.64M1.4%+17.6%0.225%Search for SEC Filing on Google Icon
5/19/2026Bank of America Corp DE488,017$274.21M0.0%+0.1%0.619%Search for SEC Filing on Google Icon
5/19/2026Edgestream Partners L.P.16,469$9.25M0.3%+640.2%0.021%Search for SEC Filing on Google Icon
5/19/2026Janus Henderson Group PLC10,790$6.06M0.0%-13.9%0.014%Search for SEC Filing on Google Icon
5/19/2026Arkadios Wealth Advisors1,220$0.69M0.0%+16.9%0.002%Search for SEC Filing on Google Icon
5/19/2026Opal Capital LLC5,458$3.07M0.5%N/A0.007%Search for SEC Filing on Google Icon
5/18/2026Amundi610,779$343.19M0.1%-1.3%0.774%Search for SEC Filing on Google Icon
5/18/2026California State Teachers Retirement System122,654$68.92M0.1%-2.2%0.155%Search for SEC Filing on Google Icon
5/18/2026ROI Financial Advisors LLC970$0.55M0.3%+3.5%0.001%Search for SEC Filing on Google Icon
5/18/2026Royal Bank of Canada391,704$220.10M0.0%-1.7%0.497%Search for SEC Filing on Google Icon
5/18/2026Empowered Funds LLC4,172$2.34M0.0%-65.7%0.005%Search for SEC Filing on Google Icon
5/16/2026American Capital Management Inc.166,056$93.31M5.0%-8.6%0.211%Search for SEC Filing on Google Icon
5/16/2026The Manufacturers Life Insurance Company 42,655$23.97M0.0%-25.3%0.054%Search for SEC Filing on Google Icon
5/16/2026Glen Eagle Advisors LLC2,056$1.16M0.2%+6,753.3%0.003%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP99,794$56.07M0.1%+81.7%0.127%Search for SEC Filing on Google Icon
5/16/2026Lazard Asset Management LLC13,539$7.61M0.0%-6.0%0.017%Search for SEC Filing on Google Icon
5/15/2026Gateway Wealth Partners LLC501$0.28M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/15/2026OMERS ADMINISTRATION Corp12,011$6.75M0.0%+88.2%0.015%Search for SEC Filing on Google Icon
5/15/2026Bradley Foster & Sargent Inc. CT103,654$58.24M0.9%-1.0%0.131%Search for SEC Filing on Google Icon
5/15/2026Lombard Odier Asset Management Switzerland SA2,537$1.43M0.1%N/A0.003%Search for SEC Filing on Google Icon
5/15/2026Waverly Advisors LLC3,168$1.78M0.0%+4.8%0.004%Search for SEC Filing on Google Icon
5/15/2026Wealth Alliance LLC835$0.47M0.0%+10.0%0.001%Search for SEC Filing on Google Icon
5/15/2026Epoch Investment Partners Inc.174,602$98.11M0.6%-10.8%0.221%Search for SEC Filing on Google Icon
5/15/2026Entropy Technologies LP16,820$9.45M0.4%+709.0%0.021%Search for SEC Filing on Google Icon
5/15/2026Cannell & Spears LLC7,176$4.03M0.1%-20.9%0.009%Search for SEC Filing on Google Icon
5/14/2026Healthcare of Ontario Pension Plan Trust Fund133,891$75.23M0.1%+37.2%0.170%Search for SEC Filing on Google Icon
5/14/2026Dai ichi Life Insurance Company Ltd3,645$2.05M0.1%+15.9%0.005%Search for SEC Filing on Google Icon
5/14/2026Renaissance Technologies LLC48,504$27.25M0.0%N/A0.061%Search for SEC Filing on Google Icon
5/14/2026Gabelli Funds LLC465$0.26M0.0%-32.1%0.001%Search for SEC Filing on Google Icon
5/14/2026Public Employees Retirement System of Ohio29,652$16.66M0.1%+1.2%0.038%Search for SEC Filing on Google Icon
5/14/2026Compound Planning Inc.1,709$0.96M0.0%-5.2%0.002%Search for SEC Filing on Google Icon
5/14/2026Arrowstreet Capital Limited Partnership838,839$471.34M0.3%+52.4%1.063%Search for SEC Filing on Google Icon
5/14/2026Bank of Nova Scotia11,124$6.25M0.0%-11.1%0.014%Search for SEC Filing on Google Icon
5/14/2026Gibbs Wealth Management1,500$0.84M0.1%-22.8%0.002%Search for SEC Filing on Google Icon
5/14/2026Sei Investments Co.94,486$53.09M0.0%-30.5%0.120%Search for SEC Filing on Google Icon
5/14/2026Davis R M Inc.91,963$51.67M0.9%-1.6%0.117%Search for SEC Filing on Google Icon
5/14/2026Lido Advisors LLC3,943$2.22M0.0%-3.2%0.005%Search for SEC Filing on Google Icon
5/13/2026Cetera Investment Advisers24,073$13.53M0.0%-3.1%0.031%Search for SEC Filing on Google Icon
5/13/2026Aureus Asset Management LLC713$0.40M0.0%-5.6%0.001%Search for SEC Filing on Google Icon
5/13/2026Quantum Capital Management LLC NJ56,208$31.58M4.0%-26.5%0.071%Search for SEC Filing on Google Icon
5/13/2026Signature Equity Partners LLC241$0.14M0.1%+412.8%0.000%Search for SEC Filing on Google Icon
5/13/2026NewEdge Wealth LLC5,731$3.22M0.0%-13.1%0.007%Search for SEC Filing on Google Icon
5/13/2026First Citizens Bank & Trust Co.26,221$14.73M0.3%-9.3%0.033%Search for SEC Filing on Google Icon
5/13/2026Alesco Advisors LLC An ESL Co520$0.29M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/13/2026First Trust Advisors LP234,653$131.85M0.1%-0.6%0.297%Search for SEC Filing on Google Icon
5/12/2026Westpac Banking Corp746$0.42M0.0%-19.8%0.001%Search for SEC Filing on Google Icon
5/12/2026ABN Amro Investment Solutions3,790$2.13M0.0%+7.6%0.005%Search for SEC Filing on Google Icon
5/8/2026PNC Financial Services Group Inc.45,739$25.70M0.0%+5.4%0.058%Search for SEC Filing on Google Icon
5/8/2026Andra AP fonden29,531$16.59M0.2%-22.9%0.037%Search for SEC Filing on Google Icon
5/8/2026Glenview Trust Co25,137$14.12M0.2%-27.7%0.032%Search for SEC Filing on Google Icon
5/8/2026Johnson Financial Group Inc.1,671$0.94M0.0%+2,994.4%0.002%Search for SEC Filing on Google Icon
5/8/2026Commerzbank Aktiengesellschaft FI877$0.49M0.0%-4.5%0.001%Search for SEC Filing on Google Icon
5/7/2026Florida Financial Advisors LLC545$0.31M0.1%-17.8%0.001%Search for SEC Filing on Google Icon
5/7/2026Earned Wealth Advisors LLC416$0.23M0.0%+12.4%0.001%Search for SEC Filing on Google Icon
5/7/2026Meeder Asset Management Inc.151$85K0.0%+19.8%0.000%Search for SEC Filing on Google Icon
5/7/2026Meeder Advisory Services Inc.1,896$1.07M0.0%+1.3%0.002%Search for SEC Filing on Google Icon
5/7/2026Dimensional Fund Advisors LP573,332$322.15M0.1%+4.3%0.722%Search for SEC Filing on Google Icon
5/7/2026Parallel Advisors LLC2,664$1.50M0.0%-1.2%0.003%Search for SEC Filing on Google Icon
5/7/2026KBC Group NV172,679$97.03M0.2%-44.2%0.217%Search for SEC Filing on Google Icon
5/7/2026True North Advisors LLC1,411$0.79M0.1%N/A0.002%Search for SEC Filing on Google Icon
5/7/2026Tandem Investment Advisors Inc.10,376$5.83M0.3%-8.9%0.013%Search for SEC Filing on Google Icon
5/7/2026SEB Asset Management AB36,527$20.52M0.1%N/A0.046%Search for SEC Filing on Google Icon
5/7/2026Swiss National Bank234,380$131.70M0.1%+6.9%0.295%Search for SEC Filing on Google Icon
5/7/2026Mediolanum International Funds Ltd42,865$23.88M0.3%+22.0%0.054%Search for SEC Filing on Google Icon
5/6/2026Annis Gardner Whiting Capital Advisors LLC119$67K0.0%+21.4%0.000%Search for SEC Filing on Google Icon
5/6/2026California Public Employees Retirement System156,525$87.95M0.1%-3.7%0.197%Search for SEC Filing on Google Icon
5/6/2026Gryphon Financial Partners LLC472$0.27M0.0%+44.3%0.001%Search for SEC Filing on Google Icon
5/6/2026Assetmark Inc.50,824$28.56M0.1%-3.7%0.064%Search for SEC Filing on Google Icon
5/6/2026Gallacher Capital Management LLC660$0.37M0.1%N/A0.001%Search for SEC Filing on Google Icon
5/6/2026Angeles Wealth Management LLC1,383$0.78M0.0%+17.3%0.002%Search for SEC Filing on Google Icon
5/6/2026AXS Investments LLC155$87K0.0%-23.6%0.000%Search for SEC Filing on Google Icon
5/6/2026Financiere des Professionnels Fonds d investissement inc.1,210$0.68M0.0%+236.1%0.002%Search for SEC Filing on Google Icon
5/6/2026Bessemer Group Inc.319,265$179.39M0.3%+2.5%0.402%Search for SEC Filing on Google Icon
5/6/2026Avalon Trust Co60$34K0.0%-60.0%0.000%Search for SEC Filing on Google Icon
5/6/2026Allspring Global Investments Holdings LLC43,198$24.39M0.0%-7.2%0.054%Search for SEC Filing on Google Icon
5/6/2026Aware Super Pty Ltd as trustee of Aware Super60,696$34.10M0.5%N/A0.076%Search for SEC Filing on Google Icon
5/5/2026Wealthfront Advisers LLC18,602$10.45M0.0%+10.0%0.023%Search for SEC Filing on Google Icon
5/5/2026D.A. Davidson & CO.2,923$1.64M0.0%+38.7%0.004%Search for SEC Filing on Google Icon
5/5/2026Marks Group Wealth Management Inc5,286$2.97M0.3%-33.7%0.007%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp1,504,532$845.38M0.2%-7.4%1.894%Search for SEC Filing on Google Icon
5/5/2026Illinois Municipal Retirement Fund6,616$3.72M0.0%+1.8%0.008%Search for SEC Filing on Google Icon
5/5/2026Three Seasons Wealth LLC1,394$0.78M0.3%-39.0%0.002%Search for SEC Filing on Google Icon
5/5/2026Robinson Value Management Ltd.5,445$3.06M1.7%-3.9%0.007%Search for SEC Filing on Google Icon
5/5/2026Geneos Wealth Management Inc.5,928$3.33M0.1%+2,309.8%0.007%Search for SEC Filing on Google Icon
5/5/2026Sanctuary Advisors LLC14,364$8.07M0.0%+12.8%0.018%Search for SEC Filing on Google Icon
5/5/2026Checchi Capital Advisers LLC702$0.39M0.0%+22.7%0.001%Search for SEC Filing on Google Icon
5/4/2026Retirement Planning Group LLC486$0.27M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/4/2026Empirical Financial Services LLC d.b.a. Empirical Wealth Management692$0.39M0.0%+12.7%0.001%Search for SEC Filing on Google Icon
5/4/2026Bryn Mawr Trust Advisors LLC10,268$5.77M0.3%-0.7%0.013%Search for SEC Filing on Google Icon
5/4/2026HBW Advisory Services LLC1,823$1.02M0.1%+2.9%0.002%Search for SEC Filing on Google Icon
5/4/2026Principal Financial Group Inc.881,189$495.16M0.3%-9.1%1.109%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: $562.09
Low: $546.18
High: $563.85

50 Day Range

MA: $562.26
Low: $528.68
High: $591.84

52 Week Range

Now: $562.09
Low: $506.91
High: $769.98

Volume

1,230,249 shs

Average Volume

572,170 shs

Market Capitalization

$44.34 billion

P/E Ratio

41.39

Dividend Yield

N/A

Beta

1.55

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

IDEXX Laboratories' top insider investors include:
  1. Jonathan W Ayers (CEO)
  2. Jonathan W Ayers (Chairman)
  3. Jonathan W Ayers (Insider)
  4. Jonathan W Ayers (Director)
  5. Daniel M Junius (Director)
  6. Jonathan Jay Mazelsky (CEO)
  7. William T End (Director)
  8. Brian P Mckeon (CFO)
  9. Brian P Mckeon (VP)
  10. 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:
  1. Bank of New York Mellon Corp — 1.89%
  2. Principal Financial Group Inc. — 1.11%
  3. Arrowstreet Capital Limited Partnership — 1.06%
  4. Amundi — 0.77%
  5. Dimensional Fund Advisors LP — 0.72%
  6. Bank of America Corp DE — 0.62%
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. KBC Group NV
  2. Bank of New York Mellon Corp
  3. Principal Financial Group Inc.
  4. Sei Investments Co.
  5. SG Americas Securities LLC
  6. AEGON ASSET MANAGEMENT UK Plc
  7. Epoch Investment Partners Inc.
  8. Quantum Capital Management LLC NJ
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. Sophie V Vandebroek (Director)
  8. M Anne Szostak (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. Arrowstreet Capital Limited Partnership
  2. Montrusco Bolton Investments Inc.
  3. Pictet Asset Management Holding SA
  4. Aware Super Pty Ltd as trustee of Aware Super
  5. Renaissance Technologies LLC
  6. Quantinno Capital Management LP
  7. SEB Asset Management AB
  8. Healthcare of Ontario Pension Plan Trust Fund

IDEXX Laboratories Active Insiders

Jonathan Jay Mazelsky
Jonathan Jay Mazelsky (Age 65)
CEO
1 recent trades
Michael G Erickson
Michael G Erickson
Executive Vice President and General Manager, Point of Care Diagnostics and Telemedicine
1 recent trades
Brian P Mckeon
Brian P Mckeon
CFO
Daniel M Junius
Daniel M Junius
Director
M Anne Szostak
M Anne Szostak
Director
Bruce L Claflin
Bruce L Claflin
Director
Rebecca M Henderson
Rebecca M Henderson
Director
Sophie V Vandebroek
Sophie V Vandebroek
Director
1 recent trades
James F. Polewaczyk
James F. Polewaczyk (Age 62)
EVP
Michael Lane
Michael Lane (Age 58)
EVP
Nimrata Hunt
Nimrata Hunt
EVP
2 recent trades
Sharon E Underberg
Sharon E Underberg
EVP
Kathy V. Turner
Kathy V. Turner (Age 62)
SVP
Giovani Twigge
Giovani Twigge
SVP
George Fennell
George Fennell
SVP
1 recent trades