| 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 | 08 Aug 2025 | 0001556270 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IDXX | Common Stock | Options Exercise | $1,985,291 | +29,260 | +35% | $67.85 | 112,571 | 06 Aug 2025 | Direct | F1 |
| transaction | IDXX | Common Stock | Sale | $686,458 | -1,095 | -0.97% | $626.90 | 111,476 | 06 Aug 2025 | Direct | F2 |
| transaction | IDXX | Common Stock | Sale | $958,115 | -1,525 | -1.4% | $628.27 | 109,951 | 06 Aug 2025 | Direct | F3 |
| transaction | IDXX | Common Stock | Sale | $2,139,508 | -3,397 | -3.1% | $629.82 | 106,554 | 06 Aug 2025 | Direct | F4 |
| transaction | IDXX | Common Stock | Sale | $3,818,874 | -6,056 | -5.7% | $630.59 | 100,498 | 06 Aug 2025 | Direct | F5 |
| transaction | IDXX | Common Stock | Sale | $4,610,096 | -7,299 | -7.3% | $631.61 | 93,199 | 06 Aug 2025 | Direct | F6 |
| transaction | IDXX | Common Stock | Sale | $1,897,689 | -3,000 | -3.2% | $632.56 | 90,199 | 06 Aug 2025 | Direct | F7 |
| transaction | IDXX | Common Stock | Sale | $2,239,457 | -3,526 | -3.9% | $635.13 | 86,673 | 06 Aug 2025 | Direct | F8 |
| transaction | IDXX | Common Stock | Sale | $1,159,068 | -1,822 | -2.1% | $636.15 | 84,851 | 06 Aug 2025 | Direct | F9 |
| transaction | IDXX | Common Stock | Sale | $560,391 | -880 | -1% | $636.81 | 83,971 | 06 Aug 2025 | Direct | F10 |
| transaction | IDXX | Common Stock | Sale | $421,985 | -660 | -0.79% | $639.37 | 83,311 | 06 Aug 2025 | Direct | F11 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IDXX | Non-Qualified Stock Option (right-to-buy) | Options Exercise | -29,260 | -100% | 0 | 06 Aug 2025 | Common Stock | 29,260 | $67.85 | Direct | F12, F13 |
| Id | Content |
|---|---|
| F1 | Includes 28.7090 shares purchased under the Issuer Employee Stock Purchase Plan on March 31, 2025 and June 30, 2025. |
| F2 | Represents the weighted average price of the shares sold ranging from a low of $626.585 to a high of $627.44 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F3 | Represents the weighted average price of the shares sold ranging from a low of $627.72 to a high of $628.71 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F4 | Represents the weighted average price of the shares sold ranging from a low of $629.14 to a high of $630.06 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F5 | Represents the weighted average price of the shares sold ranging from a low of $630.14 to a high of $630.885 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F6 | Represents the weighted average price of the shares sold ranging from a low of $631.26 to a high of $632.15 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F7 | Represents the weighted average price of the shares sold ranging from a low of $632.41 to a high of $633.30 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F8 | Represents the weighted average price of the shares sold ranging from a low of $634.66 to a high of $635.64 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F9 | Represents the weighted average price of the shares sold ranging from a low of $635.66 to a high of $636.53 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F10 | Represents the weighted average price of the shares sold ranging from a low of $636.66 to a high of $637.39 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F11 | Represents the weighted average price of the shares sold ranging from a low of $639.235 to a high of 639.49 per share. The undersigned undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares purchased at each separate price. |
| F12 | Grant of option to buy 41,260 shares of Issuer common stock that became exercisable in five annual installments beginning February 14, 2017. |
| F13 | Not applicable |