IDXX

SEC source: 0001567619-19-004922 · doc1.xml · nonDerivative · entry 5

MAZELSKY JAY · CIK 0001556270 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,974

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004922 · doc1.xml · nonDerivative · entry 4

MAZELSKY JAY · CIK 0001556270 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,469

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004922 · doc1.xml · nonDerivative · entry 3

MAZELSKY JAY · CIK 0001556270 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,010

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004922 · doc1.xml · nonDerivative · entry 2

MAZELSKY JAY · CIK 0001556270 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,273

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004922 · doc1.xml · nonDerivative · entry 1

MAZELSKY JAY · CIK 0001556270 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,802

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes 25 shares acquired under the IDEXX Laboratories, Inc. Employee Stock Purchase Plan on December 31, 2018.

SEC source: 0001567619-19-004923 · doc1.xml · derivative · entry 14

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,819

Underlying: Common Stock · 505 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2019.

F9 · price: Not applicable.

F8 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2019.

F8 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2019.

SEC source: 0001567619-19-004923 · doc1.xml · derivative · entry 13

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,324

Underlying: Common Stock · 459 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2018.

F9 · price: Not applicable.

F7 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2018.

F7 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2018.

SEC source: 0001567619-19-004923 · doc1.xml · derivative · entry 12

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,783

Underlying: Common Stock · 811 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2017.

F9 · price: Not applicable.

F6 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2017.

F6 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2017.

SEC source: 0001567619-19-004923 · doc1.xml · derivative · entry 11

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,594

Underlying: Common Stock · 629 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2016 and has been adjusted to reflect the Stock Split.

F9 · price: Not applicable.

F5 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2016 and has been adjusted to reflect the Stock Split.

F5 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2016 and has been adjusted to reflect the Stock Split.

SEC source: 0001567619-19-004923 · doc1.xml · derivative · entry 10

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,223

Underlying: Common Stock · 726 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

F9 · price: Not applicable.

F4 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

F4 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

SEC source: 0001567619-19-004923 · doc1.xml · derivative · entry 9

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,949

Underlying: Common Stock · 2,175 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

F9 · price: Not applicable.

F3 · derivative.exercise_date: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2020.

F3 · derivative.expiration_date: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2020.

SEC source: 0001567619-19-004923 · doc1.xml · derivative · entry 8

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 483

Underlying: Common Stock · 483 shares

Expires 2029-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · price: Not applicable.

F2 · derivative.exercise_date: Grant of option to buy shares of Issuer common stock that becomes exercisable on the fifth anniversary of the date of grant.

SEC source: 0001567619-19-004923 · doc1.xml · derivative · entry 7

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,753

Underlying: Common Stock · 20,753 shares

Expires 2029-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · price: Not applicable.

F1 · derivative.exercise_date: Grant of option to buy shares of Issuer common stock that becomes exercisable in five annual installments beginning February 14, 2020.

SEC source: 0001567619-19-004923 · doc1.xml · nonDerivative · entry 6

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,496

SEC source: 0001567619-19-004923 · doc1.xml · nonDerivative · entry 5

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,108

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004923 · doc1.xml · nonDerivative · entry 4

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,603

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004923 · doc1.xml · nonDerivative · entry 3

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,144

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004923 · doc1.xml · nonDerivative · entry 2

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,333

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004923 · doc1.xml · nonDerivative · entry 1

MCKEON BRIAN P · CIK 0001219445 · Executive VP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,704

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004921 · doc1.xml · derivative · entry 16

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,956

Underlying: Common Stock · 197 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F10 · derivative.exercise_price: 9. Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2019.

F11 · price: Not applicable.

F10 · derivative.exercise_date: 9. Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2019.

F10 · derivative.expiration_date: 9. Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2019.

SEC source: 0001567619-19-004921 · doc1.xml · derivative · entry 15

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,153

Underlying: Common Stock · 212 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2018.

F11 · price: Not applicable.

F9 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2018.

F9 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2018.

SEC source: 0001567619-19-004921 · doc1.xml · derivative · entry 14

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,365

Underlying: Common Stock · 221 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2017.

F11 · price: Not applicable.

F8 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2017.

F8 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2017.

SEC source: 0001567619-19-004921 · doc1.xml · derivative · entry 13

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,586

Underlying: Common Stock · 188 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2016 and has been adjusted to reflect the Stock Split.

F11 · price: Not applicable.

F7 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2016 and has been adjusted to reflect the Stock Split.

F7 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2016 and has been adjusted to reflect the Stock Split.

SEC source: 0001567619-19-004921 · doc1.xml · derivative · entry 12

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,774

Underlying: Common Stock · 242 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

F11 · price: Not applicable.

F6 · derivative.exercise_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

F6 · derivative.expiration_date: Each RSU represents a contingent right to receive one share of Issuer common stock. This RSU grant vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

SEC source: 0001567619-19-004921 · doc1.xml · derivative · entry 11

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,016

Underlying: Common Stock · 906 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2020.

F11 · price: Not applicable.

F5 · derivative.exercise_date: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2020.

F5 · derivative.expiration_date: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. This RSU grant vests in five annual installments, beginning February 14, 2020.

SEC source: 0001567619-19-004921 · doc1.xml · derivative · entry 10

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 483

Underlying: Common Stock · 483 shares

Expires 2029-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F11 · price: Not applicable.

F4 · derivative.exercise_date: Grant of option to buy shares of Issuer common stock that becomes exercisable on the fifth anniversary of the date of grant.

SEC source: 0001567619-19-004921 · doc1.xml · derivative · entry 9

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,366

Underlying: Common Stock · 8,366 shares

Expires 2029-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F11 · price: Not applicable.

F3 · derivative.exercise_date: Grant of option to buy shares of Issuer common stock that becomes exercisable in five annual installments beginning February 14, 2020.

SEC source: 0001567619-19-004921 · doc1.xml · nonDerivative · entry 6

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,117

SEC source: 0001567619-19-004921 · doc1.xml · nonDerivative · entry 5

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,441

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004921 · doc1.xml · nonDerivative · entry 4

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,244

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004921 · doc1.xml · nonDerivative · entry 3

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,032

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004921 · doc1.xml · nonDerivative · entry 2

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,811

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004921 · doc1.xml · nonDerivative · entry 1

Lane Michael · CIK 0001740689 · Corporate Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,623

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes a total of 48 shares purchased under the Issuer's Employee Stock Purchase Plan on September 28, 2018 and December 31, 2018.

SEC source: 0001567619-19-004920 · doc1.xml · derivative · entry 6

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,774 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. The RSUs vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

F4 · price: Not applicable.

F3 · derivative.exercise_date: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. The RSUs vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

F3 · derivative.expiration_date: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. The RSUs vested in five annual installments, beginning February 14, 2015. The number of RSUs have been adjusted to reflect the 2-for-1 stock split of Issuer common stock that occurred on June 15, 2015 (the "Stock Split").

SEC source: 0001567619-19-004920 · doc1.xml · derivative · entry 5

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 483

Underlying: Common Stock · 483 shares

Expires 2029-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: Not applicable.

F2 · derivative.exercise_date: Grant of option to buy shares of Issuer common stock that becomes exercisable on the fifth anniversary of the date of grant.

SEC source: 0001567619-19-004920 · doc1.xml · derivative · entry 4

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 78,170

Underlying: Common Stock · 78,170 shares

Expires 2029-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: Not applicable.

F1 · derivative.exercise_date: Grant of option to buy shares of Issuer common stock that becomes exercisable in five annual installments beginning February 14, 2020.

SEC source: 0001567619-19-004920 · doc1.xml · nonDerivative · entry 2

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,032,272

SEC source: 0001567619-19-004920 · doc1.xml · nonDerivative · entry 1

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,033,096

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-004919 · doc1.xml · derivative · entry 6

SZOSTAK M ANNE · CIK 0001094176 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,906 shares

Expires 2019-08-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: Not applicable.

F2 · derivative.exercise_date: Grant of option to buy 2,953 shares of IDEXX Laboratories, Inc. common stock that became exercisable in one annual installment on September 1, 2013 without giving effect to the 2-for-1 stock split of IDEXX Laboratories, Inc. common stock that occurred on June 15, 2015 (the "Stock Split"). The number of derivative securities reported as beneficially owned with respect to this option and its exercise price were adjusted to reflect the Stock Split.

SEC source: 0001567619-19-004919 · doc1.xml · nonDerivative · entry 4

SZOSTAK M ANNE · CIK 0001094176 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · by M. Anne Szostak Trust

Disclosed balance after: 3,416

F1 · price: Represents the weighted average price of the shares sold ranging from a low of $208.8350 to a high of $209.1750 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.

SEC source: 0001567619-19-004919 · doc1.xml · nonDerivative · entry 3

SZOSTAK M ANNE · CIK 0001094176 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · by M. Anne Szostak Trust

Disclosed balance after: 9,322

SEC source: 0001567619-19-004919 · doc1.xml · nonDerivative · entry 2

SZOSTAK M ANNE · CIK 0001094176 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 584

SEC source: 0001567619-19-004919 · doc1.xml · nonDerivative · entry 1

SZOSTAK M ANNE · CIK 0001094176 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,490

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-002650 · doc1.xml · derivative · entry 16

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 15,905 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F11 · price: Not applicable.

F10 · derivative.expiration_date: Grant of option to buy 58,857 shares of IDEXX Laboratories, Inc. common stock that became exercisable in five equal annual installments beginning on February 14, 2012 without giving effect to the 2-for-1 stock split of IDEXX Laboratories, Inc. common stock that occurred on June 15, 2015 (the "Stock Split"). The number of derivative securities reported as beneficially owned with respect to this option and its exercise price were adjusted to reflect the Stock Split.

SEC source: 0001567619-19-002650 · doc1.xml · nonDerivative · entry 12

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,031,322

F1 · shares: Sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F9 · price: Represents the weighted average price of the shares sold ranging from a low of $207.02 to a high of $207.38 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.

SEC source: 0001567619-19-002650 · doc1.xml · nonDerivative · entry 11

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,034,320

F1 · shares: Sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F8 · price: Represents the weighted average price of the shares sold ranging from a low of $206.015 to a high of $207.00 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.

SEC source: 0001567619-19-002650 · doc1.xml · nonDerivative · entry 10

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,043,120

F1 · shares: Sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F7 · price: Represents the weighted average price of the shares sold ranging from a low of $205.00 to a high of $205.99 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.

SEC source: 0001567619-19-002650 · doc1.xml · nonDerivative · entry 9

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,047,227

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001567619-19-002653 · doc1.xml · nonDerivative · entry 1

TWIGGE GIOVANI · CIK 0001500399 · CORPORATE VICE PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,693

F1 · balance_after: Includes a total of 50 shares acquired under the IDEXX Laboratories, Inc. Employee Stock Purchase Plan on September 28, 2018 and December 31, 2018.

SEC source: 0001567619-19-002650 · doc1.xml · derivative · entry 15

AYERS JONATHAN W · CIK 0001184149 · Director · Chairman, President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,905

Underlying: Common Stock · 15,905 shares

Expires 2019-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F11 · price: Not applicable.

F10 · derivative.exercise_date: Grant of option to buy 58,857 shares of IDEXX Laboratories, Inc. common stock that became exercisable in five equal annual installments beginning on February 14, 2012 without giving effect to the 2-for-1 stock split of IDEXX Laboratories, Inc. common stock that occurred on June 15, 2015 (the "Stock Split"). The number of derivative securities reported as beneficially owned with respect to this option and its exercise price were adjusted to reflect the Stock Split.