IDXX · Idexx Laboratories Inc /De · Insider Trading

Represents the weighted average price of the shares sold ranging from a low of $531.88 to a high of $532.14 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.

Not applicable.

Grant of option to buy shares of IDEXX Laboratories, Inc. common stock that vested in one installment on May 3, 2017.

Includes a total of 20 shares purchased under the Issuer Employee Stock Purchase Plan on March 31, 2026 and June 30, 2026.

Not applicable

Grant of option to buy 1,190 shares of Issuer common stock that became exercisable in one installment on February 14, 2023.

Represents deferred stock units acquired pursuant to the IDEXX Laboratories, Inc. Director Deferred Compensation Plan (the 'Plan') in accordance with Rule 16b-3. The number of deferred stock units, rounded up or down to the nearest whole unit, is determined by dividing the amount of cash compensation deferred pursuant to the Plan ($27,280.22) by the closing price of IDEXX Laboratories, Inc. common stock on the date of the deferral, or if no such price is reported for that date, the closing price for the next preceding date for which such price was reported. Each deferred stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. The deferred stock units vest immediately upon grant and are payable only as common stock as soon as practicable following the Director's resignation from the Board of Directors or on such other nondiscretionary and objectively determinable date(s) selected in accordance with the terms of the Plan.

Each Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock and vested in one installment on June 1, 2026.

Not applicable.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. These restricted stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Each deferred stock unit represents a contingent right to receive one share of Issuer common stock. These deferred stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier, and by default are payable as common stock as soon as practicable following the date of the Director's resignation from the Board of Directors.

Each deferred stock unit represents a contingent right to receive one share of Issuer common stock. These deferred stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier, and by default are payable as common stock as soon as practicable following the date of the Director's resignation from the Board of Directors.

Each deferred stock unit represents a contingent right to receive one share of Issuer common stock. These deferred stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier, and by default are payable as common stock as soon as practicable following the date of the Director's resignation from the Board of Directors.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. These restricted stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. These restricted stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Each deferred stock unit represents a contingent right to receive one share of Issuer common stock. These deferred stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier, and by default are payable as common stock as soon as practicable following the date of the Director's resignation from the Board of Directors.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Each deferred stock unit represents a contingent right to receive one share of Issuer common stock. These deferred stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier, and by default are payable as common stock as soon as practicable following the date of the Director's resignation from the Board of Directors.

Additional grant as Lead Director.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. These restricted stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Grant of option to buy shares of Issuer common stock that vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. These restricted stock units vest in one installment on the one year anniversary of the date of grant or on the date of the 2027 annual meeting of shareholders, whichever event is earlier.

Additional grant as Lead Director.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock that vested in one installment on May 7, 2026.

Not applicable.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock that vested in one installment on May 7, 2026.

Not applicable.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock that vested in one installment on May 7, 2026.

Not applicable.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock that vested in one installment on May 7, 2026.

Not applicable.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock that vested in one installment on May 7, 2026.

Not applicable.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock that vested in one installment on May 7, 2026.

Not applicable.

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock that vested in one installment on May 7, 2026.

Not applicable.

Represents deferred stock units acquired pursuant to the IDEXX Laboratories, Inc. Director Deferred Compensation Plan (the "Plan") in accordance with Rule 16b-3. The number of deferred stock units, rounded up or down to the nearest whole unit, is determined by dividing the amount of cash compensation deferred pursuant to the Plan ($24,375.00) by the closing price of IDEXX Laboratories, Inc. common stock on the date of the deferral, or if no such price is reported for that date, the closing price for the next preceding date for which such price was reported. Each deferred stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. The deferred stock units vest immediately upon grant and are payable only as common stock as soon as practicable following the Director's resignation from the Board of Directors or on such other nondiscretionary and objectively determinable date(s) selected in accordance with the terms of the Plan.

Represents the weighted average price of the shares sold ranging from a low of $634.5301 to a high of $634.8201 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.

Not applicable.

Grant of option to buy shares of Issuer common stock that vested on February 14, 2026.

Grant of option to buy shares of Issuer common stock that vested on February 14, 2026.