Insider and congress filings

IDEXX Laboratories, Inc. (IDXX)

NASDAQ · Healthcare · 300 insider transactions · 76 congress trades · last filed 2 months agoS&P 500Nasdaq 100

6
Open-market insider filings shown
2d
Median delay on the insider filings, in business days
within the two business day rule
0 buys·6 sells
Purchases and sales in the filings shown
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About IDEXX Laboratories, Inc.

from the company's filings and listing, as of Oct 20, 2026
Exchange
NASDAQ
Sector
Healthcare
Industry
Medical - Diagnostics & Research
Chief executive
Michael Erickson
Employees
11,000
Listed since
Jun 21, 1991
Market value
$43.8B
Price to earnings (12 mo)
39.0
Net income per share, as reported (12 mo)
$14.23
Dividend yield
-

www.idexx.com

Earnings

6 reported quarters · next on Nov 2, 2026
QuarterEPSEPS expectedRevenueRevenue expectedResult
Q2 FY2026reported Aug 4, 2026$4.27$3.94$1.2B$1.2BEPS beat, GAAPRevenue in line
Q1 FY2026reported May 5, 2026$3.47$3.41$1.1B$1.1BEPS beat, GAAPRevenue beat
Q4 FY2025reported Feb 2, 2026$3.08$2.93$1.1B$1.1BEPS beatRevenue beat
Q3 FY2025reported Nov 3, 2025$3.40$3.14$1.1B$1.1BEPS beat, GAAPRevenue beat
Q2 FY2025reported Aug 4, 2025$3.63$3.28$1.1B$1.1BEPS beat, GAAPRevenue beat
Q1 FY2025reported May 1, 2025$2.96$2.85$998.4M$997.1MEPS beat, GAAPRevenue in line

Actual against the consensus estimate at the time. A flag marks a beat or a miss of more than 1.5% either way; inside that band the quarter is in line. A flag marked GAAP compares a GAAP figure the company reported with an adjusted consensus, two different measures, so a one-time gain or charge can move it either way. A flag reads n/a only when a number is missing. Quarterly EPS is the figure set against the consensus, usually adjusted, so the quarters need not add up to the 12-month net income per share above. An estimate is a forecast made by analysts, not a company target.

Executive pay

as filed for fiscal 2025 · proxy filed Mar 27, 2026
ExecutiveSalaryStock awardsOtherTotal
Jonathan J. MazelskyPresident and Chief Executive Officer$1.1M$5.4M$8.0M$14.6M
Michael J. LaneExecutive Vice President and General Manager, CAG Diagnostics Business Unit$594K$1.3M$2.1M$4.0M
Tina Hunt, PhDExecutive Vice President, Global Strategy and Commercial$594K$1.3M$2.0M$3.9M
Martin Smith, PhDExecutive Vice President and Chief Technology Officer, R&D, Global Operations, Information Technology and Information Security$594K$1.3M$2.0M$3.9M
Andrew EmersonExecutive Vice President and Chief Financial Officer$531K$950K$1.6M$3.0M

The summary compensation table from the proxy statement for fiscal 2025, with titles as filed then. 1 executive who has since left the company is named in that filing and not shown here. Read the filing

Institutional holders

13F positions as of Jun 30, 2026
HolderValueSharesShares vs prior qtr% of shares out
BlackRock, Inc.$4.3B8,170,178-2.3%10.20%
Vanguard Capital Management LLC$2.7B5,152,213-0.6%6.43%
Vanguard Portfolio Management LLC$2.1B3,896,521-0.4%4.86%
State Street Corp$2.0B3,748,660+2.0%4.68%
Invesco Ltd.$1.9B3,611,416+116.1%4.51%
Geode Capital Management, LLC$1.3B2,562,886-3.7%3.20%
BAMCO Inc$1.0B1,976,778+21.0%2.47%
Morgan Stanley$713.9M1,356,103+3.1%1.69%
Bank of New York Mellon Corp$628.2M1,193,343-20.7%1.49%
Arrowstreet Capital, Limited Partnership$561.8M1,067,078+27.2%1.33%
Fundsmith LLP$536.9M1,019,887-30.4%1.27%
Blair William & Co$483.6M918,556-2.9%1.15%

A 13F reports long US equity positions and is filed within 45 days of the quarter end, so these are positions as they stood on Jun 30, 2026. For a manager's whole book see the fund directory. What a 13F covers and leaves out is explained in our guide to Form 13F.

Tracked fund managers holding IDXX

3 managers
ManagerValueSharesShare of book
FundsmithTerry Smith$536.9M1,019,8873.9%
Alyeska Investment Group$211.1M401,0820.5%
Trexquant Investment$65.0M123,3800.4%

3 of the 97 fund managers we track list IDXX shares among the largest positions in their latest 13F, filed for Q2 2026. A manager can hold it further down the book too, so this is a floor, not a count. Share of book is the position against the manager's whole disclosed 13F value.

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Open-market insider trades

6 filings shown · newest filing first
InsiderActionSharesPriceValueTrade dateDelay
(business days)
Lawrence D. KingsleyDirectorSold2,203$532.08$1.2MSep 4, 2026filed Sep 9, 20262d
Nimrata HuntExecutive Vice PresidentSold1,758$634.57$1.1MMar 3, 2026filed Mar 5, 20262d
Jonathan Jay MazelskyPresident and CEOSold · 13 lines23,326$657.55$15.3MFeb 26, 2026filed Mar 2, 20262d
Nimrata HuntExecutive Vice PresidentSold2,693$661.54$1.8MFeb 26, 2026filed Feb 27, 20261d
Sophie V. VandebroekDirectorSold · 2 lines1,464$628.62$920KFeb 17, 2026filed Feb 19, 20262d
Michael G. EricksonExecutive Vice PresidentSold · 6 lines5,371$627.38$3.4MFeb 17, 2026filed Feb 19, 20262d

One row is one filing, newest filing first. A filing that reported its trade in several tranches is summed, priced at the weighted average, and marked with its line count. The delay counts business days from the trade to the filing, the unit of Form 4's two business day deadline: weekends and federal holidays are skipped. How the filing itself works is explained in our guide to Form 4.

Other Form 4 activity (20)
InsiderEventSharesDate
Lawrence D. KingsleyDirectorOption exercise2,203Sep 4, 2026
Andrew EmersonEVP, CFO and TreasurerTax withholding86Aug 20, 2026
Andrew EmersonEVP, CFO and TreasurerOption exercise265Aug 20, 2026
Joseph L. HooleyDirectorStock award49Jul 30, 2026
George FennellExecutive Vice PresidentTax withholding284Jun 1, 2026
George FennellExecutive Vice PresidentOption exercise639Jun 1, 2026
Irene Chang BrittDirectorStock award759May 12, 2026
Bruce L. ClaflinDirectorStock award759May 12, 2026
Stuart EssigDirectorStock award759May 12, 2026
Joseph L. HooleyDirectorStock award759May 12, 2026
Daniel M. JuniusDirectorStock award759May 12, 2026
Lawrence D. KingsleyDirectorStock award1,002May 12, 2026
Karen PeacockDirectorStock award759May 12, 2026
Sam SamadDirectorStock award759May 12, 2026
Sophie V. VandebroekDirectorStock award759May 12, 2026
Joseph L. HooleyDirectorOption exercise158May 7, 2026
Daniel M. JuniusDirectorOption exercise257May 7, 2026
Lawrence D. KingsleyDirectorOption exercise339May 7, 2026
Karen PeacockDirectorOption exercise101May 7, 2026
M. Anne SzostakDirectorOption exercise257May 7, 2026

Awards, option exercises, shares withheld to cover tax and gifts all file on the same form as a purchase or a sale. None of them is a decision to trade, so they sit here rather than beside the ones that are.

Congress trades in IDXX

20 disclosures of 76 on record · median 26d of the 45 allowed

Since the trade: the stock's move from the trade date to the latest close we hold (figures as of Oct 24, 2026), not the member's result. Not investment advice.

MemberTypeActionAmount disclosedStock since the tradeTrade dateDisclosedDelay
Ro KhannaStockPurchase$1,001 - $15,000-1.3%S&P 500 +0.3% · -1.6 pts vs S&P 500Aug 3, 2026Sep 4, 202632d
Ro KhannaStockSale$1,001 - $15,000+6.5%After the saleS&P 500 +1.7% · +4.7 pts vs S&P 500Jun 30, 2026Jul 6, 20266d
Ro KhannaStockSale$1,001 - $15,000-1.2%After the saleS&P 500 +5.4% · -6.7 pts vs S&P 500May 1, 2026Jun 9, 202639d
Ro KhannaStockSale$1,001 - $15,000+6.0%After the saleS&P 500 +2.8% · +3.2 pts vs S&P 500May 15, 2026Jun 9, 202625d
Ro KhannaStockPurchase$1,001 - $15,000+1.7%S&P 500 +1.3% · +0.5 pts vs S&P 500May 27, 2026Jun 9, 202613d
Ro KhannaStockPurchase$1,001 - $15,000-1.3%S&P 500 +11.4% · -12.6 pts vs S&P 500Apr 13, 2026May 11, 202628d
Ro KhannaStockPurchase$15,001 - $50,000+0.6%S&P 500 +20.3% · -19.7 pts vs S&P 500Mar 30, 2026Apr 7, 20268d
Ro KhannaStockSale$1,001 - $15,000-10.5%After the saleS&P 500 +11.2% · -21.7 pts vs S&P 500Feb 17, 2026Mar 9, 202620d
Ro KhannaStockPurchase$1,001 - $15,000-12.7%S&P 500 +11.1% · -23.8 pts vs S&P 500Feb 24, 2026Mar 9, 202613d
Ro KhannaStockSale$1,001 - $15,000-19.2%After the saleS&P 500 +10.2% · -29.4 pts vs S&P 500Jan 23, 2026Feb 6, 202614d
April McClain DelaneyDependent childStockSale$1,001 - $15,000-21.5%After the saleS&P 500 +9.5% · -31.0 pts vs S&P 500Jan 13, 2026Feb 2, 202620d
Ro KhannaStockPurchase$1,001 - $15,000-10.7%S&P 500 +13.6% · -24.2 pts vs S&P 500Oct 7, 2025Nov 6, 202530d
April McClain DelaneyDependent childStockSale$1,001 - $15,000-12.1%After the saleS&P 500 +15.0% · -27.1 pts vs S&P 500Oct 16, 2025Nov 4, 202519d
Byron DonaldsStockPurchase$1,001 - $15,000-12.5%S&P 500 +17.1% · -29.6 pts vs S&P 500Sep 4, 2025Oct 7, 202533d
Ro KhannaStockSale$1,001 - $15,000-12.8%After the saleS&P 500 +17.4% · -30.3 pts vs S&P 500Sep 5, 2025Oct 3, 202528d
Ro KhannaStockPurchase$1,001 - $15,000-17.9%S&P 500 +20.4% · -38.3 pts vs S&P 500Aug 4, 2025Sep 9, 202536d
April McClain DelaneyDependent childStockSale$1,001 - $15,000-13.8%After the saleS&P 500 +20.2% · -34.0 pts vs S&P 500Aug 7, 2025Sep 2, 202526d
April McClain DelaneyDependent childStockSale$1,001 - $15,000+3.7%After the saleS&P 500 +21.8% · -18.1 pts vs S&P 500Jul 9, 2025Aug 5, 202527d
Jefferson ShreveStockSale$100,001 - $250,000+10.0%After the saleS&P 500 +30.4% · -20.4 pts vs S&P 500May 12, 2025Jun 22, 202541d
Robert BresnahanStockPurchase$1,001 - $15,000+9.5%S&P 500 +28.7% · -19.3 pts vs S&P 500May 15, 2025Jun 9, 202525d

Since the trade is an estimate, set beside the S&P 500 over the same window, with the gap between the two in percentage points. The filing carries a band, not a fill, and a sale keeps the stock's sign, so a positive figure after a sale means the stock kept rising after it. An option row carries the underlying stock's move. A row marked n/a is one we hold no figure for.

Every Congress trade in IDXX, filterable by party, chamber, type and account.

Members of Congress reporting a position

2 members · estimate, as of Oct 19, 2026

2 members report a position of $1,000 or more (estimated). The largest estimated position is in the $1,001 - $15,000 band.

MemberParty, chamberEstimated positionShare of their portfolio
Robert BresnahanRepublican · House$1,001 - $15,0000.1%
Gilbert Ray Cisneros, Jr.Democrat · House$1,001 - $15,000<0.1%

A further member reports a position estimated under $1,000; that member is not listed.

Estimate, as of Oct 19, 2026. Each position is modelled from the member's disclosed transactions and annual filings: the midpoint of each disclosed band, moved with the stock's price since the trade. It is a rough estimate of a reported position, not a figure from a filing, which is why it is shown as a band. Share of portfolio sets that estimate against the member's whole estimated public-stock portfolio.

Questions

Are insiders buying or selling IDXX?

Across the 6 most recent open-market filings shown here, 0 were purchases and 6 were sales.

Which members of Congress have traded IDXX?

Ro Khanna, April McClain Delaney, Byron Donalds, Jefferson Shreve and Robert Bresnahan disclosed IDXX transactions in the filings shown here.

Which members of Congress hold IDXX?

2 members of Congress report a position of $1,000 or more in IDXX in the estimate we hold as of Oct 19, 2026. The estimated positions of $1,000 or more belong to Robert Bresnahan and Gilbert Ray Cisneros, Jr. The estimate is built from disclosed transactions and annual filings, so it is shown as a band rather than a figure from a filing.

Is IDXX in the S&P 500 or the Nasdaq 100?

IDEXX Laboratories, Inc. is a current member of the S&P 500 and Nasdaq 100, per the membership list we hold as of Oct 26, 2026. Current members of either index get a page here whatever their filing history.

How quickly are IDXX trades disclosed?

Insider filings on this page reached the public a median of 2 business days after the transaction (weekends and federal holidays skipped), against the two business days Form 4 allows. Congressional disclosures took a median of 26 days, against the 45 the STOCK Act allows.

How to read a Form 4

A DECISION THE INSIDER MADE

POpen-market purchase. Bought with their own money at the market price.
SOpen-market sale. Sold on the market. A sale marked scheduled was set up in advance under a Rule 10b5-1 plan, often months before.

COMPENSATION PLUMBING

AStock award. Granted as pay, not bought.
MOption exercise. Converting options already held into shares.
FTax withholding. Shares handed back to the company to pay the tax on a grant.
GGift. Given away, with no money changing hands.

Congress rows disclose a value range rather than an exact amount, and the STOCK Act allows up to 45 days to report. Full sourcing and the limits of this data are on the methodology page. A filing is a record of a transaction, not a signal, and nothing here is investment advice.

Data as of Oct 26, 2026.

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