IDEXX LABORATORIES INC /DE — Director's Dealing 2012

Dec 20, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IDEXX LABORATORIES INC /DE (IDXX)
CIK: 0000874716
Period of Report: 2012-12-18

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-11-07	Common Stock	G	30000	—	Disposed	348133	Direct
2012-11-14	Common Stock	G	9000	—	Disposed	339133	Direct
2012-12-07	Common Stock	G	10000	—	Disposed	329133	Direct
2012-12-18	Common Stock	M	24164	$17.135	Acquired	353297	Direct
2012-12-18	Common Stock	S	18164	$96.0777	Disposed	335133	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-12-18	Non-Qualified Stock Option (right to buy)	$17.135	M	24164	Disposed	2013-02-06	Common Stock (24164)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	49000	Indirect

Footnotes

F1: The reporting person is voluntarily reporting these gift transactions on a Form 4, rather than on a year-end Form 5.

F2: The sale reported above was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 04/27/2012.

F3: The sale price reported reflects the weighted average sale price of multiple transactions on the reported date at prices that ranged from $95.75 to $96.25, 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.

F4: Grant of options to buy shares of common stock becomes exercisable as to 30,000 shares on 02/06/2004, 02/06/2005, 02/06/2006, and 02/06/2007, and the remaining 24,164 shares on 02/06/2008.