IDEXX LABORATORIES INC /DE — Director's Dealing 2013

Jun 4, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IDEXX LABORATORIES INC /DE (IDXX)
CIK: 0000874716
Period of Report: 2013-06-01

Reporting Person: Williams Michael J PhD (Executive Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-06-01	Common Stock	M	1299	—	Acquired	11354	Direct
2013-06-01	Common Stock	F	655	$82.44	Disposed	10699	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-06-01	Restricted Stock Unit	$	M	1299	Disposed		Common Stock (1299)	Direct

Footnotes

F1: Includes 66 shares acquired under the IDEXX Laboratories, Inc. Employee Stock Purchase Plan on 03/29/2013.

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 (06/01/2012) of the date of grant.