
Insider and congress filings
IDEXX Laboratories, Inc. (IDXX)
NASDAQ · Healthcare · 300 insider transactions · 76 congress trades · last filed 2 months agoS&P 500Nasdaq 100
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
- -
Earnings
6 reported quarters · next on Nov 2, 2026| Quarter | EPS | EPS expected | Revenue | Revenue expected | Result |
|---|---|---|---|---|---|
| Q2 FY2026reported Aug 4, 2026 | $4.27 | $3.94 | $1.2B | $1.2B | EPS beat, GAAPRevenue in line |
| Q1 FY2026reported May 5, 2026 | $3.47 | $3.41 | $1.1B | $1.1B | EPS beat, GAAPRevenue beat |
| Q4 FY2025reported Feb 2, 2026 | $3.08 | $2.93 | $1.1B | $1.1B | EPS beatRevenue beat |
| Q3 FY2025reported Nov 3, 2025 | $3.40 | $3.14 | $1.1B | $1.1B | EPS beat, GAAPRevenue beat |
| Q2 FY2025reported Aug 4, 2025 | $3.63 | $3.28 | $1.1B | $1.1B | EPS beat, GAAPRevenue beat |
| Q1 FY2025reported May 1, 2025 | $2.96 | $2.85 | $998.4M | $997.1M | EPS 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| Executive | Salary | Stock awards | Other | Total |
|---|---|---|---|---|
| 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| Holder | Value | Shares | Shares vs prior qtr | % of shares out |
|---|---|---|---|---|
| BlackRock, Inc. | $4.3B | 8,170,178 | -2.3% | 10.20% |
| Vanguard Capital Management LLC | $2.7B | 5,152,213 | -0.6% | 6.43% |
| Vanguard Portfolio Management LLC | $2.1B | 3,896,521 | -0.4% | 4.86% |
| State Street Corp | $2.0B | 3,748,660 | +2.0% | 4.68% |
| Invesco Ltd. | $1.9B | 3,611,416 | +116.1% | 4.51% |
| Geode Capital Management, LLC | $1.3B | 2,562,886 | -3.7% | 3.20% |
| BAMCO Inc | $1.0B | 1,976,778 | +21.0% | 2.47% |
| Morgan Stanley | $713.9M | 1,356,103 | +3.1% | 1.69% |
| Bank of New York Mellon Corp | $628.2M | 1,193,343 | -20.7% | 1.49% |
| Arrowstreet Capital, Limited Partnership | $561.8M | 1,067,078 | +27.2% | 1.33% |
| Fundsmith LLP | $536.9M | 1,019,887 | -30.4% | 1.27% |
| Blair William & Co | $483.6M | 918,556 | -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| Manager | Value | Shares | Share of book |
|---|---|---|---|
| FundsmithTerry Smith | $536.9M | 1,019,887 | 3.9% |
| Alyeska Investment Group | $211.1M | 401,082 | 0.5% |
| Trexquant Investment | $65.0M | 123,380 | 0.4% |
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.
Open-market insider trades
6 filings shown · newest filing first| Insider | Action | Shares | Price | Value | Trade date | Delay (business days) |
|---|---|---|---|---|---|---|
| Lawrence D. KingsleyDirector | Sold | 2,203 | $532.08 | $1.2M | Sep 4, 2026filed Sep 9, 2026 | 2d |
| Nimrata HuntExecutive Vice President | Sold | 1,758 | $634.57 | $1.1M | Mar 3, 2026filed Mar 5, 2026 | 2d |
| Jonathan Jay MazelskyPresident and CEO | Sold · 13 lines | 23,326 | $657.55 | $15.3M | Feb 26, 2026filed Mar 2, 2026 | 2d |
| Nimrata HuntExecutive Vice President | Sold | 2,693 | $661.54 | $1.8M | Feb 26, 2026filed Feb 27, 2026 | 1d |
| Sophie V. VandebroekDirector | Sold · 2 lines | 1,464 | $628.62 | $920K | Feb 17, 2026filed Feb 19, 2026 | 2d |
| Michael G. EricksonExecutive Vice President | Sold · 6 lines | 5,371 | $627.38 | $3.4M | Feb 17, 2026filed Feb 19, 2026 | 2d |
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)
| Insider | Event | Shares | Date |
|---|---|---|---|
| Lawrence D. KingsleyDirector | Option exercise | 2,203 | Sep 4, 2026 |
| Andrew EmersonEVP, CFO and Treasurer | Tax withholding | 86 | Aug 20, 2026 |
| Andrew EmersonEVP, CFO and Treasurer | Option exercise | 265 | Aug 20, 2026 |
| Joseph L. HooleyDirector | Stock award | 49 | Jul 30, 2026 |
| George FennellExecutive Vice President | Tax withholding | 284 | Jun 1, 2026 |
| George FennellExecutive Vice President | Option exercise | 639 | Jun 1, 2026 |
| Irene Chang BrittDirector | Stock award | 759 | May 12, 2026 |
| Bruce L. ClaflinDirector | Stock award | 759 | May 12, 2026 |
| Stuart EssigDirector | Stock award | 759 | May 12, 2026 |
| Joseph L. HooleyDirector | Stock award | 759 | May 12, 2026 |
| Daniel M. JuniusDirector | Stock award | 759 | May 12, 2026 |
| Lawrence D. KingsleyDirector | Stock award | 1,002 | May 12, 2026 |
| Karen PeacockDirector | Stock award | 759 | May 12, 2026 |
| Sam SamadDirector | Stock award | 759 | May 12, 2026 |
| Sophie V. VandebroekDirector | Stock award | 759 | May 12, 2026 |
| Joseph L. HooleyDirector | Option exercise | 158 | May 7, 2026 |
| Daniel M. JuniusDirector | Option exercise | 257 | May 7, 2026 |
| Lawrence D. KingsleyDirector | Option exercise | 339 | May 7, 2026 |
| Karen PeacockDirector | Option exercise | 101 | May 7, 2026 |
| M. Anne SzostakDirector | Option exercise | 257 | May 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 allowedSince 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.
| Member | Type | Action | Amount disclosed | Stock since the trade | Trade date | Disclosed | Delay |
|---|---|---|---|---|---|---|---|
| Ro Khanna | Stock | Purchase | $1,001 - $15,000 | -1.3%S&P 500 +0.3% · -1.6 pts vs S&P 500 | Aug 3, 2026 | Sep 4, 2026 | 32d |
| Ro Khanna | Stock | Sale | $1,001 - $15,000 | +6.5%After the saleS&P 500 +1.7% · +4.7 pts vs S&P 500 | Jun 30, 2026 | Jul 6, 2026 | 6d |
| Ro Khanna | Stock | Sale | $1,001 - $15,000 | -1.2%After the saleS&P 500 +5.4% · -6.7 pts vs S&P 500 | May 1, 2026 | Jun 9, 2026 | 39d |
| Ro Khanna | Stock | Sale | $1,001 - $15,000 | +6.0%After the saleS&P 500 +2.8% · +3.2 pts vs S&P 500 | May 15, 2026 | Jun 9, 2026 | 25d |
| Ro Khanna | Stock | Purchase | $1,001 - $15,000 | +1.7%S&P 500 +1.3% · +0.5 pts vs S&P 500 | May 27, 2026 | Jun 9, 2026 | 13d |
| Ro Khanna | Stock | Purchase | $1,001 - $15,000 | -1.3%S&P 500 +11.4% · -12.6 pts vs S&P 500 | Apr 13, 2026 | May 11, 2026 | 28d |
| Ro Khanna | Stock | Purchase | $15,001 - $50,000 | +0.6%S&P 500 +20.3% · -19.7 pts vs S&P 500 | Mar 30, 2026 | Apr 7, 2026 | 8d |
| Ro Khanna | Stock | Sale | $1,001 - $15,000 | -10.5%After the saleS&P 500 +11.2% · -21.7 pts vs S&P 500 | Feb 17, 2026 | Mar 9, 2026 | 20d |
| Ro Khanna | Stock | Purchase | $1,001 - $15,000 | -12.7%S&P 500 +11.1% · -23.8 pts vs S&P 500 | Feb 24, 2026 | Mar 9, 2026 | 13d |
| Ro Khanna | Stock | Sale | $1,001 - $15,000 | -19.2%After the saleS&P 500 +10.2% · -29.4 pts vs S&P 500 | Jan 23, 2026 | Feb 6, 2026 | 14d |
| April McClain DelaneyDependent child | Stock | Sale | $1,001 - $15,000 | -21.5%After the saleS&P 500 +9.5% · -31.0 pts vs S&P 500 | Jan 13, 2026 | Feb 2, 2026 | 20d |
| Ro Khanna | Stock | Purchase | $1,001 - $15,000 | -10.7%S&P 500 +13.6% · -24.2 pts vs S&P 500 | Oct 7, 2025 | Nov 6, 2025 | 30d |
| April McClain DelaneyDependent child | Stock | Sale | $1,001 - $15,000 | -12.1%After the saleS&P 500 +15.0% · -27.1 pts vs S&P 500 | Oct 16, 2025 | Nov 4, 2025 | 19d |
| Byron Donalds | Stock | Purchase | $1,001 - $15,000 | -12.5%S&P 500 +17.1% · -29.6 pts vs S&P 500 | Sep 4, 2025 | Oct 7, 2025 | 33d |
| Ro Khanna | Stock | Sale | $1,001 - $15,000 | -12.8%After the saleS&P 500 +17.4% · -30.3 pts vs S&P 500 | Sep 5, 2025 | Oct 3, 2025 | 28d |
| Ro Khanna | Stock | Purchase | $1,001 - $15,000 | -17.9%S&P 500 +20.4% · -38.3 pts vs S&P 500 | Aug 4, 2025 | Sep 9, 2025 | 36d |
| April McClain DelaneyDependent child | Stock | Sale | $1,001 - $15,000 | -13.8%After the saleS&P 500 +20.2% · -34.0 pts vs S&P 500 | Aug 7, 2025 | Sep 2, 2025 | 26d |
| April McClain DelaneyDependent child | Stock | Sale | $1,001 - $15,000 | +3.7%After the saleS&P 500 +21.8% · -18.1 pts vs S&P 500 | Jul 9, 2025 | Aug 5, 2025 | 27d |
| Jefferson Shreve | Stock | Sale | $100,001 - $250,000 | +10.0%After the saleS&P 500 +30.4% · -20.4 pts vs S&P 500 | May 12, 2025 | Jun 22, 2025 | 41d |
| Robert Bresnahan | Stock | Purchase | $1,001 - $15,000 | +9.5%S&P 500 +28.7% · -19.3 pts vs S&P 500 | May 15, 2025 | Jun 9, 2025 | 25d |
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.
A delay above 45 days is the gap between the dates on the report; we mark a filing late only after checking it.
"Not captured" means the band or the transaction type on the original report is missing from our data.
"Dates conflict" marks a row whose disclosure is dated before its trade on the record we hold. Both dates are printed as filed, and no since-the-trade figure is computed from them.
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, 20262 members report a position of $1,000 or more (estimated). The largest estimated position is in the $1,001 - $15,000 band.
| Member | Party, chamber | Estimated position | Share of their portfolio |
|---|---|---|---|
| Robert Bresnahan | Republican · House | $1,001 - $15,000 | 0.1% |
| 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
COMPENSATION PLUMBING
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.
