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$IDXX

$567.68 +$6.95 (1.24%)

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Insider Transactions

Insider Transaction Summary

JONATHAN JAY MAZELSKY

83,803 shares

Net: +62,989 B/S: 28.34

JONATHAN W AYERS

35,651 shares

Net: 0 B/S: -

BRIAN P MCKEON

31,550 shares

Net: 0 B/S: -

GIOVANI TWIGGE

18,436 shares

Net: 0 B/S: -

Nimrata Hunt

18,141 shares

Net: -1,205 B/S: 1.0

REBECCA M HENDERSON

14,696 shares

Net: 0 B/S: -

JAMES F POLEWACZYK

14,681 shares

Net: 0 B/S: -

Michael G Erickson

13,412 shares

Net: +18,660 B/S: 26.37

GEORGE FENNELL

9,878 shares

Net: +14,931 B/S: 14.39

Kathy V Turner

7,380 shares

Net: 0 B/S: -

Michael Lane

7,357 shares

Net: +999 B/S: 1.22

Sharon E. Underberg

7,138 shares

Net: +4,040 B/S: 1.79

Jacqueline Studer

4,389 shares

Net: 0 B/S: -

Andrew Emerson

3,950 shares

Net: +5,590 B/S: ∞

DANIEL M JUNIUS

3,304 shares

Net: 0 B/S: -

Michael Perkins Johnson

2,576 shares

Net: +3,205 B/S: ∞

Martin Alexander Smith

2,157 shares

Net: +5,220 B/S: ∞

Michael Schreck

2,123 shares

Net: +3,866 B/S: ∞

Sophie V. Vandebroek

1,167 shares

Net: 0 B/S: 1.0

JAY MAZELSKY

806 shares

Net: 0 B/S: -

Asha COLLINS

779 shares

Net: 0 B/S: -

SAM SAMAD

600 shares

Net: 0 B/S: -

Bruce L. Claflin

600 shares

Net: 0 B/S: -

Lawrence D Kingsley

600 shares

Net: 0 B/S: -

Irene Chang Britt

600 shares

Net: 0 B/S: -

STUART ESSIG

600 shares

Net: 0 B/S: -

M ANNE SZOSTAK

262 shares

Net: -259 B/S: 1.0

JOSEPH L HOOLEY

118 shares

Net: +276 B/S: ∞

Karen Peacock

101 shares

Net: +101 B/S: ∞

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
JONATHAN JAY MAZELSKY	83,803	+62,989	28.34
JONATHAN W AYERS	35,651	0	-
BRIAN P MCKEON	31,550	0	-
GIOVANI TWIGGE	18,436	0	-
Nimrata Hunt	18,141	-1,205	1.0
REBECCA M HENDERSON	14,696	0	-
JAMES F POLEWACZYK	14,681	0	-
Michael G Erickson	13,412	+18,660	26.37
GEORGE FENNELL	9,878	+14,931	14.39
Kathy V Turner	7,380	0	-
Michael Lane	7,357	+999	1.22
Sharon E. Underberg	7,138	+4,040	1.79
Jacqueline Studer	4,389	0	-
Andrew Emerson	3,950	+5,590	∞
DANIEL M JUNIUS	3,304	0	-
Michael Perkins Johnson	2,576	+3,205	∞
Martin Alexander Smith	2,157	+5,220	∞
Michael Schreck	2,123	+3,866	∞
Sophie V. Vandebroek	1,167	0	1.0
JAY MAZELSKY	806	0	-
Asha COLLINS	779	0	-
SAM SAMAD	600	0	-
Bruce L. Claflin	600	0	-
Lawrence D Kingsley	600	0	-
Irene Chang Britt	600	0	-
STUART ESSIG	600	0	-
M ANNE SZOSTAK	262	-259	1.0
JOSEPH L HOOLEY	118	+276	∞
Karen Peacock	101	+101	∞

Individual Transactions

April 30, 2026

JOSEPH L HOOLEY

Grant/Award Acquisition

Change: +43

Price: $560.80

Shares: 118

Value: +$24,114

Insider	Filing Date	Transaction	Shares	Change	Price	Value
JOSEPH L HOOLEY	May 04	Grant/Award Acquisition (A) Compensation/Award	118	+43	$560.80	+$24,114

March 03, 2026

Nimrata Hunt

Open Market Sale

Change: -1,758

Price: $634.57

Shares: 18,141

Value: -$1,115,577

Sharon E. Underberg

Option Exercise/Conversion

Change: +197

Price: $505.53

Shares: 7,138

Value: +$99,589

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Nimrata Hunt	Mar 05	Open Market Sale (S) Market Sale	18,141	-1,758	$634.57	-$1,115,577
Sharon E. Underberg	Mar 05	Option Exercise/Conversion (M) Compensation/Award	7,138	+197	$505.53	+$99,589

February 27, 2026

JONATHAN JAY MAZELSKY

Option Exercise/Conversion

Change: +197

Price: $505.53

Shares: 83,803

Value: +$99,589

Insider	Filing Date	Transaction	Shares	Change	Price	Value
JONATHAN JAY MAZELSKY	Mar 02	Option Exercise/Conversion (M) Compensation/Award	83,803	+197	$505.53	+$99,589

February 26, 2026

JONATHAN JAY MAZELSKY

Open Market Sale

Change: -1,281

Price: $650.67

Shares: 105,651

Value: -$833,507

JONATHAN JAY MAZELSKY

Option Exercise/Conversion

Change: +23,326

Price: $141.60

Shares: 106,932

Value: +$3,302,961

Nimrata Hunt

Open Market Sale

Change: -2,693

Price: $661.54

Shares: 19,899

Value: -$1,781,530

Insider	Filing Date	Transaction	Shares	Change	Price	Value
JONATHAN JAY MAZELSKY	Mar 02	Open Market Sale (S) Market Sale	105,651	-1,281	$650.67	-$833,507
JONATHAN JAY MAZELSKY	Mar 02	Option Exercise/Conversion (M) Compensation/Award	106,932	+23,326	$141.60	+$3,302,961
Nimrata Hunt	Feb 27	Open Market Sale (S) Market Sale	19,899	-2,693	$661.54	-$1,781,530

February 19, 2026

Michael G Erickson

Option Exercise/Conversion

Change: +719

Price: $141.60

Shares: 13,412

Value: +$101,810

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michael G Erickson	Feb 19	Option Exercise/Conversion (M) Compensation/Award	13,412	+719	$141.60	+$101,810

February 17, 2026

Michael G Erickson

Option Exercise/Conversion

Change: +1,191

Price: $141.60

Shares: 13,884

Value: +$168,645

Michael G Erickson

Open Market Sale

Change: -456

Price: $623.76

Shares: 17,608

Value: -$284,433

Sophie V. Vandebroek

Open Market Sale

Change: -945

Price: $628.65

Shares: 1,167

Value: -$594,070

Sophie V. Vandebroek

Option Exercise/Conversion

Change: +945

Price: $333.90

Shares: 2,112

Value: +$315,535

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michael G Erickson	Feb 19	Option Exercise/Conversion (M) Compensation/Award	13,884	+1,191	$141.60	+$168,645
Michael G Erickson	Feb 19	Open Market Sale (S) Market Sale	17,608	-456	$623.76	-$284,433
Sophie V. Vandebroek	Feb 19	Open Market Sale (S) Market Sale	1,167	-945	$628.65	-$594,070
Sophie V. Vandebroek	Feb 19	Option Exercise/Conversion (M) Compensation/Award	2,112	+945	$333.90	+$315,535

February 14, 2026

Michael Schreck

Option Exercise/Conversion

Change: +117

Price: $0.00

Shares: 2,123

Value: +$0

Michael Perkins Johnson

Option Exercise/Conversion

Change: +176

Price: $0.00

Shares: 2,576

Value: +$0

Michael Lane

Option Exercise/Conversion

Change: +204

Price: $0.00

Shares: 7,357

Value: +$0

Nimrata Hunt

Option Exercise/Conversion

Change: +204

Price: $0.00

Shares: 21,363

Value: +$0

Sharon E. Underberg

Option Exercise/Conversion

Change: +173

Price: $0.00

Shares: 6,533

Value: +$0

GEORGE FENNELL

Option Exercise/Conversion

Change: +55

Price: $0.00

Shares: 9,878

Value: +$0

Andrew Emerson

Option Exercise/Conversion

Change: +61

Price: $0.00

Shares: 3,950

Value: +$0

Andrew Emerson

Tax Payment

Change: -123

Price: $629.35

Shares: 4,222

Value: -$77,410

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michael Schreck	Feb 17	Option Exercise/Conversion (M) Compensation/Award	2,123	+117	$0.00	+$0
Michael Perkins Johnson	Feb 17	Option Exercise/Conversion (M) Compensation/Award	2,576	+176	$0.00	+$0
Michael Lane	Feb 17	Option Exercise/Conversion (M) Compensation/Award	7,357	+204	$0.00	+$0
Nimrata Hunt	Feb 17	Option Exercise/Conversion (M) Compensation/Award	21,363	+204	$0.00	+$0
Sharon E. Underberg	Feb 17	Option Exercise/Conversion (M) Compensation/Award	6,533	+173	$0.00	+$0
GEORGE FENNELL	Feb 17	Option Exercise/Conversion (M) Compensation/Award	9,878	+55	$0.00	+$0
Andrew Emerson	Feb 17	Option Exercise/Conversion (M) Compensation/Award	3,950	+61	$0.00	+$0
Andrew Emerson	Feb 17	Tax Payment (F) Tax Payment	4,222	-123	$629.35	-$77,410