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. 99.5% of the shares are freely tradable; institutional investors hold 96.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 10.37 | 8,170,178 | -2.3 | 06/30/2026 |
| Vanguard Capital Management, LLC | 6.54 | 5,152,213 | -0.6 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.95 | 3,896,521 | -0.4 | 06/30/2026 |
| State Street Corp | 4.76 | 3,748,660 | +2.0 | 06/30/2026 |
| Amvescap Plc. | 4.58 | 3,611,416 | +7.8 | 06/30/2026 |
| Geode Capital Management, LLC | 3.25 | 2,562,886 | -3.7 | 06/30/2026 |
| BAMCO Inc | 2.51 | 1,976,778 | +21.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.17 | 2,499,834 | -0.3 | 09/30/2026 |
| Vanguard 500 Index Investor | 2.63 | 2,069,046 | -1.2 | 09/30/2026 |
| Vanguard MStar Mid Cap Index Instl | 2.14 | 1,686,971 | -1.1 | 09/30/2026 |
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 | 5,273,882 $ | Sep 4, 2026 | direct |
| Emerson Andrew | EVP, CFO and Treasurer | 4,421 | 2,437,100 $ | Aug 20, 2026 | direct |
| Hooley Joseph L | Director | 325 | 179,140 $ | 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: October 30, 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.