IDEXX LABORATORIES INC /DE — Director's Dealing 2011

Feb 16, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IDEXX LABORATORIES INC /DE (IDXX)
CIK: 0000874716
Period of Report: 2011-02-14

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-14	Common Stock	M	274	—	Acquired	9418	Direct
2011-02-14	Common Stock	M	476	—	Acquired	9894	Direct
2011-02-14	Common Stock	M	343	—	Acquired	10237	Direct
2011-02-14	Common Stock	M	400	—	Acquired	10637	Direct
2011-02-14	Common Stock	M	399	—	Acquired	11036	Direct
2011-02-14	Common Stock	F	632	$77.59	Disposed	10404	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-14	Non-Qualified Stock Option (right to buy)	$77.59	A	10716	Acquired	2018-02-13	Common Stock (10716)	Direct
2011-02-14	Incentive Stock Option (right to buy)	$77.59	A	1288	Acquired	2018-02-13	Common Stock (1288)	Direct
2011-02-14	Restricted Stock Unit	$	A	1289	Acquired		Common Stock (1289)	Direct
2011-02-14	Restricted Stock Unit	$	M	274	Disposed		Common Stock (274)	Direct
2011-02-14	Restricted Stock Unit	$	M	476	Disposed		Common Stock (476)	Direct
2011-02-14	Restricted Stock Unit	$	M	343	Disposed		Common Stock (343)	Direct
2011-02-14	Restricted Stock Unit	$	M	400	Disposed		Common Stock (400)	Direct
2011-02-14	Restricted Stock Unit	$	M	399	Disposed		Common Stock (399)	Direct

Footnotes

F1: Incudes 66 shares acquired under the IDEXX Laboratories, Inc. Employee Stock Purchase Plan on 12/31/2010.

F2: Grant of options to buy shares of common stock becomes exercisable as to 2,401 shares on each of 02/14/2012, 02/14/2013, 02/14/2014 and 02/14/2015, and the remaining 1,112 shares on 02/14/2016.

F3: Grant of options to buy shares of common stock that vest on the fifth anniversary date (02/14/2016) of the grant.

F4: 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 (02/14/2012) of the date of grant.

F5: 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 (02/14/2007) of the date of grant.

F6: 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 (02/14/2008) of the date of grant.

F7: 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 (02/14/2009) of the date of grant.

F8: 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 (02/14/2010) of the date of grant.

F9: 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 (02/14/2011) of the date of grant.