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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1. Name and Address of Reporting Person * Underberg Sharon E. 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) EVP, GC & Corporate Secretary (Last) (First) (Middle) ONE IDEXX DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 02/12/2026 (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 02/14/2026 M 173 A $ 0 6,532.654(1) D Common Stock 02/14/2026 M 176 A $ 0 6,708.654 D Common Stock 02/14/2026 M 218 A $ 0 6,926.654 D Common Stock 02/14/2026 M 265 A $ 0 7,191.654 D Common Stock 02/14/2026 F 251 D $629.35(2) 6,940.654 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
Non-Qualified Stock Option (right-to-buy)	$617.2	02/12/2026		A		3,738		(3)	02/11/2036	Common Stock	3,738	$ 0	3,738	D
Incentive Stock Option (right-to-buy)	$617.2	02/12/2026		A		162		(4)	02/11/2036	Common Stock	162	$ 0	162	D
Restricted Stock Unit	(5)	02/12/2026		A		891		(5)	(5)	Common Stock	891	$ 0	891	D
Restricted Stock Unit	(6)	02/14/2026		M			173	(6)	(6)	Common Stock	173	$ 0	0	D
Restricted Stock Unit	(7)	02/14/2026		M			176	(7)	(7)	Common Stock	176	$ 0	176	D
Restricted Stock Unit	(8)	02/14/2026		M			218	(8)	(8)	Common Stock	218	$ 0	434	D
Restricted Stock Unit	(9)	02/14/2026		M			265	(9)	(9)	Common Stock	265	$ 0	795	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Underberg Sharon E. ONE IDEXX DRIVE WESTBROOK, ME 04092			EVP, GC & Corporate Secretary

Signatures

/s/ Lily J. Lu, Attorney-in-Fact for Sharon E. Underberg		02/17/2026
**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 a total of 21 shares purchased under the Issuer Employee Stock Purchase Plan ('ESPP') on September 30, 2025 and December 31, 2025. There are a total of 333.654 shares held in the ESPP which has been increased by 0.001 shares due to a rounding calculation of previously issued fractional shares.
(2)	Closing price of Issuer common stock on Nasdaq Global Select Market on February 13, 2026.
(3)	Grant of option to buy shares of Issuer common stock that becomes exercisable in four annual installments beginning February 14, 2027.
(4)	Grant of option to buy shares of Issuer common stock that becomes exercisable in one installment on February 14, 2030.
(5)	Each restricted stock unit ('RSU') represents a contingent right to receive one share of Issuer common stock and vests in four annual installments, beginning February 14, 2027.
(6)	Each RSU represents a contingent right to receive one share of Issuer common stock that vested in four annual installments, beginning February 14, 2023.
(7)	Each RSU represents a contingent right to receive one share of Issuer common stock and vests in four annual installments, beginning February 14, 2024.
(8)	Each RSU represents a contingent right to receive one share of Issuer common stock and vests in four annual installments beginning on February 14, 2025.
(9)	Each RSU represents a contingent right to receive one share of Issuer common stock and vests in four annual installments, beginning February 14, 2026.

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