IDEXX Laboratories Inc
Ownership
Ownership Structure
Who owns IDEXX Laboratories Inc (IDXX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.6% of the shares are freely tradable; institutional investors hold 96.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 10.62 | 8,365,553 | -2.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.58 | 5,182,507 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.96 | 3,910,863 | +0.0 | 03/31/2026 |
| State Street Corp | 4.66 | 3,674,185 | +0.5 | 03/31/2026 |
| Amvescap Plc. | 4.25 | 3,349,677 | +1.6 | 03/31/2026 |
| Geode Capital Management, LLC | 3.38 | 2,660,999 | +3.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.19 | 2,512,024 | +0.3 | 07/31/2026 |
| Vanguard 500 Index Investor | 2.63 | 2,069,715 | +1.1 | 07/31/2026 |
| Vanguard MStar Mid Cap Index Instl | 2.17 | 1,707,197 | -0.1 | 07/31/2026 |
| Invesco QQQ Trust | 2.15 | 1,696,958 | +0.5 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Kingsley Lawrence D | Director | 9,568 | 4,846,192 $ | Sep 4, 2026 | direct |
| Emerson Andrew | EVP, CFO and Treasurer | 4,421 | 2,239,461 $ | Aug 20, 2026 | direct |
| Hooley Joseph L | Director | 325 | 164,613 $ | Jul 30, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 4, 2026 | Kingsley Lawrence D | Director | Sell | 2,203 | 532.08 | 1,172,178 |
| Sep 4, 2026 | Kingsley Lawrence D | Director | Other | 2,203 | 114.17 | 251,517 |
| Aug 20, 2026 | Emerson Andrew | EVP, CFO and Treasurer | Other | 86 | 0.00 | – |
| Aug 20, 2026 | Emerson Andrew | EVP, CFO and Treasurer | Other | 265 | 178.26 | 47,239 |
| Jul 30, 2026 | Hooley Joseph L | Director | Other | 49 | 558.80 | 27,381 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.