IDXX insider transactions

Executive Vice President Fennell George converted options into 639 shares and covered exercise/tax liability with 284 shares, increasing direct ownership by 4% to 10,433 units (SEC Form 4)

SEC Form 4 filed by Director Samad Sam

SEC Form 4 filed by Director Vandebroek Sophie V.

SEC Form 4 filed by Director Peacock Karen

SEC Form 4 filed by Director Junius Daniel M

SEC Form 4 filed by Director Kingsley Lawrence D

SEC Form 4 filed by Director Hooley Joseph L

SEC Form 4 filed by Director Claflin Bruce L.

SEC Form 4 filed by Director Essig Stuart

SEC Form 4 filed by Director Britt Irene Chang

Director Vandebroek Sophie V. converted options into 257 shares, increasing direct ownership by 40% to 905 units (SEC Form 4)

Director Szostak M Anne converted options into 257 shares, increasing direct ownership by 98% to 519 units (SEC Form 4)

Director Peacock Karen converted options into 101 shares, increasing direct ownership by 10,100% to 102 units (SEC Form 4)

Director Junius Daniel M converted options into 257 shares, increasing direct ownership by 8% to 3,561 units (SEC Form 4)

Director Kingsley Lawrence D converted options into 339 shares, increasing direct ownership by 4% to 9,568 units (SEC Form 4)

Director Hooley Joseph L converted options into 158 shares, increasing direct ownership by 134% to 276 units (SEC Form 4)

Director Hooley Joseph L was granted 43 shares, increasing direct ownership by 57% to 118 units (SEC Form 4)

EVP, GC & Corporate Secretary Underberg Sharon E. exercised 197 shares at a strike of $505.53, increasing direct ownership by 3% to 7,138 units (SEC Form 4)

Executive Vice President Hunt Nimrata sold $1,115,577 worth of shares (1,758 units at $634.57), decreasing direct ownership by 9% to 18,141 units (SEC Form 4)

Amendment: SEC Form 4 filed by Executive Vice President Erickson Michael G

President and CEO Mazelsky Jonathan Jay exercised 23,523 shares at a strike of $144.65 and sold $15,338,081 worth of shares (23,326 units at $657.55), increasing direct ownership by 0.24% to 83,803 units (SEC Form 4)

Executive Vice President Hunt Nimrata sold $1,781,531 worth of shares (2,693 units at $661.54), decreasing direct ownership by 12% to 19,899 units (SEC Form 4)

Executive Vice President Erickson Michael G exercised 7,770 shares at a strike of $187.94 and sold $3,369,666 worth of shares (5,371 units at $627.38), increasing direct ownership by 19% to 15,092 units (SEC Form 4)

Director Vandebroek Sophie V. exercised 945 shares at a strike of $333.90 and sold $920,293 worth of shares (1,464 units at $628.62), decreasing direct ownership by 44% to 648 units (SEC Form 4)

EVP, GC & Corporate Secretary Underberg Sharon E. converted options into 832 shares and covered exercise/tax liability with 251 shares, increasing direct ownership by 9% to 6,941 units (SEC Form 4)

Executive Vice President Smith Martin Alexander converted options into 1,004 shares and covered exercise/tax liability with 302 shares, increasing direct ownership by 48% to 2,157 units (SEC Form 4)

Executive Vice President Schreck Michael converted options into 1,959 shares and covered exercise/tax liability with 876 shares, increasing direct ownership by 54% to 3,089 units (SEC Form 4)

President and CEO Mazelsky Jonathan Jay converted options into 2,057 shares and covered exercise/tax liability with 915 shares, increasing direct ownership by 1% to 83,606 units (SEC Form 4)

Executive Vice President Lane Michael converted options into 1,092 shares and covered exercise/tax liability with 221 shares, increasing direct ownership by 12% to 8,024 units (SEC Form 4)

Executive Vice President Johnson Michael Perkins converted options into 573 shares and covered exercise/tax liability with 178 shares, increasing direct ownership by 16% to 2,795 units (SEC Form 4)

Executive Vice President Hunt Nimrata converted options into 2,587 shares and covered exercise/tax liability with 1,154 shares, increasing direct ownership by 7% to 22,592 units (SEC Form 4)

Executive Vice President Fennell George covered exercise/tax liability with 199 shares and converted options into 454 shares, increasing direct ownership by 3% to 10,078 units (SEC Form 4)

Executive Vice President Erickson Michael G converted options into 2,363 shares and covered exercise/tax liability with 974 shares, increasing direct ownership by 12% to 12,693 units (SEC Form 4)

EVP, CFO and Treasurer Emerson Andrew converted options into 456 shares and covered exercise/tax liability with 123 shares, increasing direct ownership by 9% to 4,222 units (SEC Form 4)

Executive Vice President Fennell George exercised 12,821 shares at a strike of $67.85 and sold $7,336,993 worth of shares (11,345 units at $646.72), increasing direct ownership by 18% to 9,823 units (SEC Form 4)

Director Hooley Joseph L was granted 36 shares, increasing direct ownership by 92% to 75 units (SEC Form 4)

SEC Form 4 filed by Director Peacock Karen

Executive Vice President Hunt Nimrata sold $6,629,014 worth of shares (9,425 units at $703.34) and exercised 12,530 shares at a strike of $382.28, increasing direct ownership by 17% to 21,149 units (SEC Form 4)

Director Hooley Joseph L was granted 39 shares (SEC Form 4)

Amendment: New insider Peacock Karen claimed ownership of 1 shares (SEC Form 3)

New insider Peacock Karen claimed no ownership of stock in the company (SEC Form 3)

President and CEO Mazelsky Jonathan Jay gifted 1,051 shares, decreasing direct ownership by 1% to 82,443 units (SEC Form 4)

Executive Vice President Smith Martin Alexander converted options into 18 shares and covered exercise/tax liability with 5 shares, increasing direct ownership by 0.92% to 1,434 units (SEC Form 4)

SEC Form 4 filed by Director Hooley Joseph L

Director Szostak M Anne exercised 2,187 shares at a strike of $206.62, sold $1,415,700 worth of shares (2,187 units at $647.33), gifted 259 shares and received a gift of 259 shares (SEC Form 4)

Executive Vice President Erickson Michael G sold $263,813 worth of shares (406 units at $649.96), decreasing direct ownership by 3% to 11,287 units (SEC Form 4)

Amendment: SEC Form 5 filed by Erickson Michael G

Amendment: New insider Erickson Michael G claimed ownership of 9,377 shares (SEC Form 3)

Executive Vice President Hunt Nimrata sold $787,840 worth of shares (1,200 units at $656.53) and exercised 1,226 shares at a strike of $244.16, increasing direct ownership by 0.14% to 18,033 units (SEC Form 4)

EVP, GC & Corporate Secretary Underberg Sharon E. exercised 5,633 shares at a strike of $217.89 and sold $3,551,220 worth of shares (5,450 units at $651.60), increasing direct ownership by 3% to 6,339 units (SEC Form 4)

President and CEO Mazelsky Jonathan Jay exercised 183 shares at a strike of $598.49, increasing direct ownership by 0.22% to 83,494 units (SEC Form 4)

EVP, CFO and Treasurer Emerson Andrew exercised 1,849 shares at a strike of $141.60 and covered exercise/tax liability with 402 shares, increasing direct ownership by 60% to 3,871 units (SEC Form 4)

Executive Vice President Hunt Nimrata exercised 12,794 shares at a strike of $187.57 and sold $4,503,163 worth of shares (7,143 units at $630.43), increasing direct ownership by 46% to 18,007 units (SEC Form 4)

President and CEO Mazelsky Jonathan Jay exercised 29,260 shares at a strike of $67.85 and sold $18,491,642 worth of shares (29,260 units at $631.98) (SEC Form 4)

Executive Vice President Lane Michael exercised 8,411 shares at a strike of $276.27 and sold $5,279,893 worth of shares (8,411 units at $627.74), increasing direct ownership by 0.00% to 7,132 units (SEC Form 4)

New insider Hooley Joseph L claimed no ownership of stock in the company (SEC Form 3)

Executive Vice President Johnson Michael Perkins covered exercise/tax liability with 1,499 shares and converted options into 3,382 shares, increasing direct ownership by 390% to 2,365 units (SEC Form 4)

Director Szostak M Anne exercised 1,046 shares at a strike of $160.28 and sold $1,182,917 worth of shares (2,306 units at $512.97) (SEC Form 4)

Director Junius Daniel M exercised 2,683 shares at a strike of $263.81 and sold $1,358,697 worth of shares (2,683 units at $506.41) (SEC Form 4)

Director Vandebroek Sophie V. exercised 1,279 shares at a strike of $283.59 and sold $628,425 worth of shares (1,279 units at $491.34) (SEC Form 4)