IDEXX LABORATORIES INC /DE — Director's Dealing 2012

May 11, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IDEXX LABORATORIES INC /DE (IDXX)
CIK: 0000874716
Period of Report: 2012-05-09

Reporting Person: MCKEON BRIAN P (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-09	Deferred Stock Unit	$	A	369	Acquired		Common Stock (369)	Direct
2012-05-09	Non-Qualified Stock Option (right to buy)	$88.09	A	3752	Acquired	2019-05-08	Common Stock (3752)	Direct

Footnotes

F1: Each deferred stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. The deferred stock units vest 100% one year from the date of grant and are payable as common stock one year following the Director's resignation from the Board of Directors.

F2: Grant of options to buy shares of common stock that vest one year from the date of grant (05/09/2013).