IDEXX LABORATORIES INC /DE — Director's Dealing 2015

May 5, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IDEXX LABORATORIES INC /DE (IDXX)
CIK: 0000874716
Period of Report: 2015-05-01

Reporting Person: AYERS JONATHAN W (Director, Chairman, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-01	Common Stock	M	10000	$34.37	Acquired	461042	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-01	Non-Qualified Stock Option (right to buy)	$34.37	M	10000	Disposed	2016-02-13	Common Stock (10000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	49000	Indirect

Footnotes

F1: Includes 42 shares acquired under the IDEXX Laboratories, Inc. Employee Stock Purchase Plan on 3/31/2015.

F2: Grant of option to buy shares of IDEXX Laboratories, Inc. common stock that became exercisable as to 15,999 shares on 02/14/2010 and 02/14/2013, 16,000 shares on 02/14/2011 and 02/14/2012, and the remaining 13,091 shares on 02/14/2014.