| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MAZELSKY JONATHAN JAY | President and CEO, Director | ONE IDEXX DRIVE, WESTBROOK | /s/ Lily J. Lu, Attorney-in-Fact for Jonathan Jay Mazelsky | 04 Sep 2025 | 0001556270 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IDXX | Common Stock | Gift | $0 | -1,051 | -1.3% | $0.000000 | 82,443 | 15 Aug 2025 | Direct |