IDEXX LABORATORIES INC /DE — Director's Dealing 2011

Nov 29, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IDEXX LABORATORIES INC /DE (IDXX)
CIK: 0000874716
Period of Report: 2011-11-28

Reporting Person: HENDERSON REBECCA M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-11-28	Common Stock	M	5000	$29.27	Acquired	13348	Direct
2011-11-28	Common Stock	S	5000	$71.4272	Disposed	8348	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-11-28	Non-Qualified Stock Option (right to buy)	$29.27	M	5000	Disposed	2015-05-17	Common Stock (5000)	Direct

Footnotes

F1: The sale price reported reflects the weighted average sale price of multiple transactions on the reported date at prices that ranged from $71.23 to $71.44, 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.

F2: Grant of options to buy shares of common stock that vest on 05/10/2006.