IDEXX LABORATORIES INC /DE — Director's Dealing 2012

Sep 5, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IDEXX LABORATORIES INC /DE (IDXX)
CIK: 0000874716
Period of Report: 2012-09-01

Reporting Person: TWIGGE GIOVANI (CORPORATE VICE PRESIDENT)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-09-01	Common Stock	M	263	—	Acquired	1190	Direct
2012-09-01	Common Stock	F	82	$95.06	Disposed	1108	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-09-01	Restricted Stock Unit	$	M	263	Disposed		Common Stock (263)	Direct

Footnotes

F1: Includes 79 shares and 51 shares acquired under the IDEXX Laboratories, Inc. Employee Stock Purchase Plan on 03/30/2012 and 06/30/2012, respectively.

F2: Each restricted stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. The restricted stock units vest in five equal annual installments, beginning on the first anniversary date (09/01/2011) of the date of grant.