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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: $567.47
Price Change: ▲ Price Increase of +8.404 (1.50%)
As of 08/3/2026 03:59 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
7/10/2026Tema ETFs LLC3,934$2.07M0.1%-1.6%0.005%Search for SEC Filing on Google Icon
7/10/2026Haven Capital Group Inc.11,492$6.05M5.0%-5.3%0.015%Search for SEC Filing on Google Icon
7/10/2026Generali Investments Management Co LLC902$0.48M0.1%+40.9%0.001%Search for SEC Filing on Google Icon
7/10/2026E. Ohman J or Asset Management AB3,911$2.06M0.0%+11.1%0.005%Search for SEC Filing on Google Icon
7/10/2026Handelsbanken Fonder AB38,344$20.19M0.1%+5.9%0.049%Search for SEC Filing on Google Icon
7/10/2026City Holding Co.817$0.43M0.0%-22.9%0.001%Search for SEC Filing on Google Icon
7/10/2026Salvus Wealth Management LLC627$0.33M0.2%-12.7%0.001%Search for SEC Filing on Google Icon
7/9/2026Revolve Wealth Partners LLC963$0.51M0.1%+7.6%0.001%Search for SEC Filing on Google Icon
7/9/2026Franklin Street Advisors Inc. NC26,215$13.80M0.8%-2.0%0.033%Search for SEC Filing on Google Icon
7/9/2026Legacy Wealth Asset Management LLC488$0.26M0.1%+29.8%0.001%Search for SEC Filing on Google Icon
7/9/2026Birchbrook Inc.4,477$2.36M1.1%-0.8%0.006%Search for SEC Filing on Google Icon
7/9/2026Everhart Financial Group Inc.1,939$1.02M0.1%-5.4%0.002%Search for SEC Filing on Google Icon
7/9/2026Sax Wealth Advisors LLC2,354$1.32M0.0%+97.6%0.003%Search for SEC Filing on Google Icon
7/9/2026Pine Haven Investment Counsel Inc1,388$0.73M0.5%+4.8%0.002%Search for SEC Filing on Google Icon
7/9/2026Valeo Financial Advisors LLC383$0.20M0.0%+6.4%0.000%Search for SEC Filing on Google Icon
7/9/2026Seilern Investment Management Ltd97,560$51.36M6.5%+20.7%0.124%Search for SEC Filing on Google Icon
7/9/2026Norway Savings Bank4,919$2.59M1.1%+5.6%0.006%Search for SEC Filing on Google Icon
7/8/2026Beacon Bank & Trust1,082$0.57M0.1%-6.3%0.001%Search for SEC Filing on Google Icon
7/8/2026Beacon Investment Advisory Services Inc.55,153$29.04M1.1%-6.2%0.070%Search for SEC Filing on Google Icon
7/8/2026Aurora Investment Managers LLC.4,638$2.44M1.5%N/A0.006%Search for SEC Filing on Google Icon
7/8/2026Elevation Wealth Partners LLC49$26K0.0%+188.2%0.000%Search for SEC Filing on Google Icon
7/8/2026Czech National Bank22,453$11.82M0.1%+3.2%0.028%Search for SEC Filing on Google Icon
7/8/2026PensionDanmark Pensionsforsikringsaktieselskab14,190$7.47M0.1%+4.5%0.018%Search for SEC Filing on Google Icon
7/8/2026Assenagon Asset Management S.A.183,233$96.46M0.1%+113.5%0.232%Search for SEC Filing on Google Icon
7/8/2026Manitou Investment Management Ltd.69,979$36.84M6.8%+0.5%0.089%Search for SEC Filing on Google Icon
7/7/2026Dynamic Advisor Solutions LLC493$0.26M0.0%-10.0%0.001%Search for SEC Filing on Google Icon
7/7/2026GAMMA Investing LLC3,297$1.74M0.1%+7.5%0.004%Search for SEC Filing on Google Icon
7/7/2026Canandaigua National Bank & Trust Co.971$0.51M0.0%N/A0.001%Search for SEC Filing on Google Icon
7/7/2026Arlington Trust Co LLC60$32K0.0%+46.3%0.000%Search for SEC Filing on Google Icon
7/7/2026Carderock Capital Management Inc.16,627$8.75M1.9%+1.0%0.021%Search for SEC Filing on Google Icon
7/7/2026Grove Bank & Trust710$0.37M0.0%-35.8%0.001%Search for SEC Filing on Google Icon
7/7/2026Anderson Hoagland & Co.9,834$5.18M0.4%-0.6%0.012%Search for SEC Filing on Google Icon
7/6/2026Bangor Savings Bank1,410$0.74M0.1%-6.1%0.002%Search for SEC Filing on Google Icon
7/2/2026Versant Capital Management Inc1,014$0.53M0.0%+46.1%0.001%Search for SEC Filing on Google Icon
7/1/2026Eastern Bank506$0.27M0.0%-15.1%0.001%Search for SEC Filing on Google Icon
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 Company42,655$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
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: $567.47
Low: $560.58
High: $581.55

50 Day Range

MA: $557.36
Low: $526.44
High: $578.89

52 Week Range

Now: $567.47
Low: $518.55
High: $769.98

Volume

989,183 shs

Average Volume

577,045 shs

Market Capitalization

$44.76 billion

P/E Ratio

41.79

Dividend Yield

N/A

Beta

1.54

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. Assenagon Asset Management S.A. — 0.23%
  2. Seilern Investment Management Ltd — 0.12%
  3. Manitou Investment Management Ltd. — 0.09%
  4. Beacon Investment Advisory Services Inc. — 0.07%
  5. Handelsbanken Fonder AB — 0.05%
  6. Franklin Street Advisors Inc. NC — 0.03%
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. Beacon Investment Advisory Services Inc.
  2. Haven Capital Group Inc.
  3. Franklin Street Advisors Inc. NC
  4. Grove Bank & Trust
  5. City Holding Co.
  6. Everhart Financial Group Inc.
  7. Bangor Savings Bank
  8. Salvus Wealth Management LLC
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. Assenagon Asset Management S.A.
  2. Seilern Investment Management Ltd
  3. Aurora Investment Managers LLC.
  4. Handelsbanken Fonder AB
  5. Sax Wealth Advisors LLC
  6. Canandaigua National Bank & Trust Co.
  7. Czech National Bank
  8. PensionDanmark Pensionsforsikringsaktieselskab

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