FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Williams Michael J PhD   2. Issuer Name and Ticker or Trading Symbol IDEXX LABORATORIES INC /DE [IDXX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Corporate Vice President (Last) (First) (Middle) ONE IDEXX DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 02/14/2010 (Street) WESTBROOK, ME 04092 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 02/14/2010   M   274 A $ 0 10,635 (1) D   Common Stock 02/14/2010   M   476 A $ 0 11,111 D   Common Stock 02/14/2010   M   344 A $ 0 11,455 D   Common Stock 02/14/2010   M   400 A $ 0 11,855 D   Common Stock 02/14/2010   F   558 D $ 53.31 11,297 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Underlying Securities (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Incentive Stock Option (right to buy)	$ 53.31	02/14/2010		A		1,875		(2)	02/13/2017	Common Stock	1,875	$ 0	1,875	D
Non-Qualified Stock Option (right to buy)	$ 53.31	02/14/2010		A		17,295		(3)	02/13/2017	Common Stock	17,295	$ 0	17,295	D
Restricted Stock Unit	(4)	02/14/2010		A		1,993		(4)	(4)	Common Stock	1,993	$ 0	7,342	D
Restricted Stock Unit	(5)	02/14/2010		M			274	(5)	(5)	Common Stock	274	$ 0	7,068	D
Restricted Stock Unit	(6)	02/14/2010		M			476	(6)	(6)	Common Stock	476	$ 0	6,592	D
Restricted Stock Unit	(7)	02/14/2010		M			344	(7)	(7)	Common Stock	344	$ 0	6,248	D
Restricted Stock Unit	(8)	02/14/2010		M			400	(8)	(8)	Common Stock	400	$ 0	5,848	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Williams Michael J PhD ONE IDEXX DRIVE WESTBROOK, ME 04092			Corporate Vice President

Signatures

John B. Rogers, Attorney-in-Fact for Michael J. Williams, PhD		02/17/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Includes 84 shares and 79 shares of common stock acquired under the IDEXX Laboratories, Inc. Employee Stock Purchase Plan on September 30 and December 31, 2009, respectively.
(2)	Grant of option to buy shares of IDEXX Laboratories, Inc. common stock becomes exercisable on the fifth anniversary date (2/14/2015) of the date of grant.
(3)	Grant of option to buy shares of IDEXX Laboratories, Inc. common stock exercisable as to 3,834 shares on each of 2/14/2011, 2/14/2012, 2/14/2013 and 2/14/2014 and 1,959 shares on 2/14/2015.
(4)	Each restricted stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. Restricted stock units vest in five equal annual installments beginning on 2/14/2011.
(5)	Each restricted stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. Restricted stock units vest in five equal annual installments beginning on 2/14/2007.
(6)	Each restricted stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. Restricted stock units vest in five equal annual installments beginning on 2/14/2008.
(7)	Each restricted stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. Restricted stock units vest in five equal annual installments beginning on 2/14/2009.
(8)	Each restricted stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. Restricted stock units vest in five equal annual installments beginning on 2/14/2010.

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