IDEXX LABORATORIES INC /DE — Director's Dealing 2012

Nov 8, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IDEXX LABORATORIES INC /DE (IDXX)
CIK: 0000874716
Period of Report: 2012-11-06

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-11-06	Common Stock	M	17392	$38.3350	Acquired	379141	Direct
2012-11-06	Common Stock	S	13392	$94.0616	Disposed	365749	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-11-06	Non-Qualified Stock Option (right to buy)	$38.3350	M	17392	Disposed	2013-02-13	Common Stock (17392)	Direct

Footnotes

F1: The sale reported above was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 04/27/2012.

F2: The sale price reported reflects the weighted average sale] price of multiple transactions on the reported date at prices that ranged from $93.7690 to $94.69, inclusive. The reporting person hereby undertakes to provide upon request to SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price within the range.

F3: Grant of options to buy shares of common stock becomes exercisable as to 12,000 shares on 02/14/2007, 02/14/2008, 02/14/2009, 02/14/2010, and the remaining 9,392 shares on 02/14/2011.