Sec Form 4 Filing - Dupree Thomas J @ IDEXX LABORATORIES INC /DE - 2011-02-17

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 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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1. Name and Address of Reporting Person Dupree Thomas J 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 (MM/DD/YY) 02/17/2011 (Street) WESTBROOK, ME04092 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 02/17/2011 M 14,600 A $ 18.025 20,283 D Common Stock 02/17/2011 M 6,984 A $ 25.45 27,267 D Common Stock 02/17/2011 M 6,016 A $ 25.45 33,283 D Common Stock 02/17/2011 M 3,780 A $ 28.655 37,063 D Common Stock 02/17/2011 M 9,220 A $ 28.655 46,283 D Common Stock 02/17/2011 M 1,410 A $ 41.935 47,693 D Common Stock 02/17/2011 M 14,942 A $ 41.935 62,635 D Common Stock 02/17/2011 M < span class="form4-data"> 1,728 A $ 38.335 64,363 D Common Stock 02/17/2011 M 3,598 A $ 38.335 67,961 D Common Stock 02/17/2011 M 1 A $ 56.95 67,962 D Common Stock 02/17/2011 M 11,823 A $ 56.95 79,785 D Common Stock 02/17/2011 M 1 A $ 34.37 79,786 D Common Stock 02/17/2011 M 8,299 A $ 34.37 88,085 D Common Stock 02/17/2011 M 3,834 A $ 53.31 91,919 D Common Stock 02/17/2011 S 17,930 D $ 77.9078 ( 1 ) 73,989 D Common Stock 02/17/2011 S 68,306 D $ 77.7199 ( 2 ) 5,683 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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) $ 18.025 02/17/2011 M 14,600 ( 3 ) 03/10/2013 Common Stock 14,600 $ 0 0 D Incentive Stock Option (right to buy) $ 25.45 02/17/2011 M 6,984 ( 4 ) 02/04/2014 Common Stock 6,984 $ 0 0 D Non-Qualified Stock Option (right to buy) $ 25.45 02/17/2011 M 6,016 ( 5 ) 02/04/2014 Common Stock 6,016 $ 0 0 D Incentive Stock Option (right to buy) $ 28.655 02/17/2011 M 3,780 ( 6 ) 02/02/2015 Common Stock 3,780 $ 0 0 D Non-Qualified Stock Option (right to buy) $ 28.655 02/17/2011 M 9,220 ( 7 ) 02/02/2015 Common Stock 9,220 $ 0 0 D Incentive Stock Option (right to buy) $ 41.935 02/17/2011 M 1,410 ( 8 ) 02/13/2014 Common Stock 1,410 $ 0 2,384 D Non-Qualified Stock Option (right to buy) $ 41.935 02/17/2011 M 14,942 ( 9 ) 02/13/2014 Common Stock 14,942 $ 0 1,704 D Incentive Stock Option (right to buy) $ 38.335 02/17/2011 M 1,728 ( 10 ) 02/13/2013 Common Stock 1,728 $ 0 0 D Non-Qualified Stock Option (right to buy) $ 38.335 02/17/2011 M 3,598 ( 11 ) 02/13/2013 Common Stock 3,598 $ 0 0 D Incentive Stock Option (right to buy) $ 56.95 02/17/2011 M 1 ( 12 ) 02/13/2015 Common Stock 1 $ 0 1,755 D Non-Qualified Stock Option (right to buy) $ 56.95 02/17/2011 M 11,823 ( 13 ) 02/13/2015 Common Stock 11,823 $ 0 6,127 D Incentive Stock Option (right to buy) $ 34.37 02/17/2011 M 1 ( 14 ) 02/13/2016 Common Stock 1 $ 0 2,910 D Non-Qualified Stock Option (right to buy) $ 34.37 02/17/2011 M 8,299 ( 15 ) 02/13/2016 Common Stock 8,299 $ 0 9,540 D Non-Qualified Stock Option (right to buy) $ 53.31 02/17/2011 M 3,834 ( 16 ) 02/13/2017 Common Stock 3,834 $ 0 13,461 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Dupree Thomas J ONE IDEXX DRIVE WESTBROOK, ME04092 Corporate Vice President Signatures John B. Rogers, Attorney-in-Fact for Thomas J. Dupree 02/22/2011 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The sale price reported reflects the weighted average sale price of multiple transactions on the reported date at prices that ranged from $77.90 to $77.95, 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. ( 2 )The sale price reported reflects the weighted average sale price of multiple transactions on the reported date at prices that ranged from $77.70 to $77.82, 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. ( 3 )Grant of options to buy shares of common stock that vest in five equal annual installments, beginning on the first anniversary date (03/10/2004) of the date of grant. ( 4 )Grant of options to buy shares of common stock becomes exercisable as to 1,096 shares on 02/05/2005, 02/05/2006, 02/05/2007, 02/05/2008, and the remaining 2,600 shares on 02/05/2009. ( 5 )Grant of options to buy shares of common stock that vest in five equal annual installments, beginning on the first anniversary date (02/05/2005) of the date of grant. ( 6 )Grant of options to buy shares of common stock becomes exercisable as to 1,180 shares on 02/03/2009 and the remaining 2,600 shares on 02/03/2010. ( 7 )Grant of options to buy shares of common stock becomes exercisable as to 2,600 shares on 02/03/2006, 02/03/2007, 02/03/2008, and the remaining 1,420 shares on 02/03/2009. ( 8 )Grant of options to buy shares of common stock becomes exercisable as to 1,410 shares on 02/14/2011 and the remaining 2,384 shares on 02/14/2012. ( 9 )Grant of options to buy shares of common stock becomes exercisable as to 4,088 shares on 02/14/2008, 02/14/2009, 02/14/2010, 2,678 shares on 02/14/2011, and the remaining 1,704 shares on 02/14/2012. ( 10 )Grant of options to buy shares of common stock becomes exercisable as to 664 shares on 02/14/2010 and the remaining 1,064 shares on 02/14/2011. ( 11 )Grant of options to buy shares of common stock becomes exercisable as to 1,066 shares on 02/14/2007, 02/14/2008, 02/14/2009, and the remaining 400 shares on 02/14/2010. ( 12 )Grant of options to buy shares of common stock becomes exercisable as to 1 share on 02/14/2011 and the remaining 1,755 shares on 02/14/2013. ( 13 )Grant of options to buy shares of common stock becomes exercisable as to 3,942 shares on 02/14/2009, 3,941 shares on 02/14/2010 and 02/14/2012, 3,940 shares on 02/14/2011, and the remaining 2,186 shares on 02/14/2013. ( 14 )Grant of options to buy shares of common stock becomes exercisable as to 1 share on 02/14/2010 and 02/14/2013, and the remaining 2,909 shares on 02/14/2014. ( 15 )Grant of options to buy shares of common stock becomes exercisable as to 4,149 shares on 02/14/2010 and 2/14/2013, 4,150 shares on 02/14/2011 and 02/14/2012, and the remaining 1,241 shares on 02/14/2014. ( 16 )Grant of options to buy shares of common stock becomes exercisable as to 3,834 shares on 02/14/2011, 02/14/2012, 02/14/2013, 02/14/2014, and the remaining 1,959 shares on 02/14/2015.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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