Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

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 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 * HOOLEY JOSEPH L 2. Issuer Name and Ticker or Trading Symbol IDEXX LABORATORIES INC /DE [IDXX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) ONE IDEXX DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 09/01/2025 (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

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

Restricted Stock Unit(1)

(2)

09/01/2025

A

158

(2)

(2)

Common Stock

158

$ 0

158

D

Non-Qualified Stock Option (right-to-buy)(1)

$647.09(3)

09/01/2025

A

364

(4)

08/31/2035

Common Stock

364

$ 0

364

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
HOOLEY JOSEPH L ONE IDEXX DRIVE WESTBROOK, ME 04092	X

Signatures

/s/ Lily J. Lu, Attorney-in-Fact for Joseph L. Hooley		09/03/2025
**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)	This equity grant represents pro rata equity compensation earned by the reporting person as a non-employee Director from his election to the IDEXX Laboratories, Inc. Board of Directors on July 10, 2025 until the 2026 annual meeting of stockholders.
(2)	Each restricted stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock and vest in one installment on May 7, 2026 or on the date of the 2026 annual meeting of stockholders, whichever event is earlier.
(3)	Closing price of Issuer common stock on the Nasdaq Global Select Market on August 29, 2025.
(4)	Grant of option to buy shares of IDEXX Laboratories, Inc. common stock that vests in one installment on May 7, 2026 or on the date of the 2026 annual meeting of stockholders, whichever event is earlier.

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