Form: 4

Statement of changes in beneficial ownership of securities

December 13, 2006

SEC Form 4
FORM 4 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
or Section 30(h) of the Investment Company Act of 1940
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 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
TONELLI QUENTIN J
(Last) (First) (Middle)
C/O IDEXX LABORATORIES, INC.
ONE IDEXX DRIVE
(Street)
WESTBROOK ME 04092
(City) (State) (Zip)
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
3. Date of Earliest Transaction (Month/Day/Year)
12/11/2006
4. If Amendment, Date of 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
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 12/11/2006 M 450 A $29.4599 15,975(1)(2) 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 (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 Securities Underlying Derivative Security (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: 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) $29.4599 12/11/2006 M 450 (3) 05/23/2011 Common Stock 450 $29.4599 1,404 D
Explanation of Responses:
1. Includes 39 shares acquired pursuant to the IDEXX Laboratories, Inc. Employee Stock Purchase Plan on September 29, 2006.
2. The reporting person also indirectly holds 4,625 shares of common stock of IDEXX Laboratories, Inc., of which 3,575 shares are held by the Bret C. Tonelli UTMA account with Charles Schwab and 1,050 are owned by the Mary Tonelli Revocable Trust (of which the reporting person and his sister are beneficiaries). The reporting person disclaims beneficial ownership of all shares held by the Bret C. Tonelli UTMA account, and this report should not be deemed an admission that the reporting person is the beneficial owner of such shares for purposes of Section 16 or any other purpose. The reporting person reports beneficial ownership of all of the shares held by the Mary Tonelli Revocable Trust, but disclaims beneficial ownership except to the extent of his pecuniary interest therein.
3. Grant of option to buy shares of common stock exercisable as to 1,854 shares on 5/23/2006.
Conan R. Deady, Attorney-in-Fact for Quentin J. Tonelli, PhD 12/13/2006
** Signature of Reporting Person Date

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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