IDEXX Laboratories Inc.

Last updated September 27, 2026

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Organization details

Legal name: IDEXX Laboratories Inc.
Ownership: Public
Status: Active
Sector (GICS): Health Care
SIC code: 2835 — In Vitro & In Vivo Diagnostic Substances
Jurisdiction of incorporation: Delaware
Headquarters city: Westbrook
Headquarters state / province: Maine
Headquarters country: United States
Fiscal year end: December
Ticker symbol: IDXX
Primary stock exchange: Nasdaq

Identifiers

SEC CIK: 0000874716
EIN: 01-0393723
Wikidata ID: Q1758392

Board of directors

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Asha Collins · Director
Since 2023
Bruce L. Claflin · Director
Since 2023
Daniel M. Junius · Director
Since 2023
Irene Chang Britt · Director
Since 2023
Jonathan Jay Mazelsky · Director · Executive Chair of the Board
Since 2023
Jonathan W. Ayers · Director
Since 2023
Joseph L. Hooley · Director
Since 2025
Karen Peacock · Director
Since 2025
Lawrence D. Kingsley · Director
Since 2023
M. Anne Szostak · Director
Since 2023
Sam Samad · Director
Since 2023
Sophie Vandebroek V · Director
Since 2023
Stuart Essig · Director
Since 2023

Chief executives

Jonathan Jay Mazelsky · President & CEO

Dates unknown

Director election results

Annual meeting of May 12, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Daniel M. Junius

94.8%

Board connections

9 of this board's directors also sit on 15 other boards. 5 are in the same sector.

Shared director Other board Same sector

Aptiv PLC
via Joseph L. Hooley
Brighthouse Financial Inc.
via Irene Chang Britt
Ciena Corporation
via Bruce L. Claflin
Crescent Biopharma Inc. Same sector
via Daniel M. Junius
DENTSPLY SIRONA Inc. Same sector
via Jonathan Jay Mazelsky
Dropbox Inc.
via Karen Peacock
First Watch Restaurant Group Inc.
via Irene Chang Britt
Insulet Corporation Same sector
via Jonathan Jay Mazelsky
Integra LifeSciences Holdings Corporation Same sector
via Stuart Essig
Mirion Technologies Inc.
via Lawrence D. Kingsley
Orthofix Medical Inc. Same sector
via Stuart Essig
Piper Sandler Companies
via Stuart Essig
Polaris Inc.
via Lawrence D. Kingsley
Revvity Inc.
via Sophie Vandebroek V
Victorias Secret & Co.
via Irene Chang Britt

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $0; 0 purchases by 0 insiders
Sold, last 12 months: $58,430,096; 53 sales by 9 insiders

Date	Insider	Transaction	Shares	Price	Value
Nov 4, 2026	Daniel M. Junius Director	Open-market sale	−700	$705.78	$494,046
Nov 4, 2026	Lane Michael Officer (Executive Vice President)	Open-market sale	−243	$687.85	$167,109
Nov 4, 2026	Jonathan Jay Mazelsky Director, Officer (Executive Chair of the Board)	Option exercise	+25,140	$178.26	$4,481,456
Nov 4, 2026	Underberg Sharon E. Officer (EVP, GC & Corporate Secretary)	Option exercise	+8,906	$288.78	$2,571,875
Nov 4, 2026	Daniel M. Junius Director	Open-market sale	−500	$701.69	$350,843
Nov 4, 2026	Lane Michael Officer (Executive Vice President)	Open-market sale	−2,059	$689.70	$1,420,092
Nov 4, 2026	Jonathan Jay Mazelsky Director, Officer (Executive Chair of the Board)	Open-market sale	−1,945	$698.26	$1,358,121
Nov 4, 2026	Underberg Sharon E. Officer (EVP, GC & Corporate Secretary)	Open-market sale	−6,348	$688.25	$4,368,995
Nov 4, 2026	Lane Michael Officer (Executive Vice President)	Open-market sale	−1,677	$687.46	$1,152,868
Nov 4, 2026	Jonathan Jay Mazelsky Director, Officer (Executive Chair of the Board)	Open-market sale	−4,075	$699.33	$2,849,761
Nov 4, 2026	Underberg Sharon E. Officer (EVP, GC & Corporate Secretary)	Open-market sale	−1,503	$689.05	$1,035,636
Nov 4, 2026	Jonathan Jay Mazelsky Director, Officer (Executive Chair of the Board)	Open-market sale	−1,667	$700.33	$1,167,442
Nov 4, 2026	Underberg Sharon E. Officer (EVP, GC & Corporate Secretary)	Open-market sale	−1,055	$690.02	$727,973
Nov 4, 2026	Jonathan Jay Mazelsky Director, Officer (Executive Chair of the Board)	Open-market sale	−4,540	$701.36	$3,184,158
Nov 4, 2026	Jonathan Jay Mazelsky Director, Officer (Executive Chair of the Board)	Open-market sale	−2,136	$702.21	$1,499,922

Peers

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Questions about IDEXX Laboratories Inc.

Who is the CEO of IDEXX Laboratories Inc.?

Jonathan Jay Mazelsky is IDEXX Laboratories Inc.'s President & CEO.

How many directors are on IDEXX Laboratories Inc.'s board?

IDEXX Laboratories Inc.'s board has 13 directors: Asha Collins, Bruce L. Claflin, Daniel M. Junius, Irene Chang Britt, Jonathan Jay Mazelsky, Jonathan W. Ayers, Joseph L. Hooley, Karen Peacock, Lawrence D. Kingsley, M. Anne Szostak and 3 others.

Are IDEXX Laboratories Inc. insiders buying or selling shares?

Over the last 12 months, IDEXX Laboratories Inc. insiders made no open-market purchases and sold $58.4 million of shares in 53 sales on the open market, as reported to the SEC on Forms 4 and 5.

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