Form: 4/A

Statement of changes in beneficial ownership of securities

March 3, 2026

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).
  
 Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Erickson Michael G
(Last) (First) (Middle)
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)
Executive Vice President
3. Date of Earliest Transaction (Month/Day/Year)
02/12/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
02/17/2026 		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 15,092.351(1) 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
Non-Qualified Stock Option (right-to-buy)(2) $617.2 02/12/2026 A 13,667 (3) 02/11/2036 Common Stock 13,667 $0 13,667 D
Incentive Stock Option (right-to-buy)(2) $617.2 02/12/2026 A 162 (4) 02/11/2036 Common Stock 162 $0 162 D
Explanation of Responses:
1. Includes 184 vested but deferred restricted stock units.
2. This Amendment on Form 4/A (this 'Amendment') amends the Form 4 filed on February 17, 2026 (the 'Original Form 4') solely to correct an administrative error, which resulted in the inadvertent erroneous reporting of the equity awards granted to the reporting person on February 12, 2026. Specifically, Table II of the Original Form 4 incorrectly reported that 6,319 restricted stock units (of which 1,580 restricted stock units were deferred) were granted to the reporting person on February 12, 2026, which did not occur. Instead, as reported in this Amendment, a non-qualified stock option to purchase 13,667 shares of Issuer common stock and an incentive stock option to purchase 162 shares of Issuer common stock were granted to the reporting person on February 12, 2026, with an exercise price equal to the closing price of the Issuer's common stock on that day. This Amendment does make any other changes to the Original Form 4.
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.
Remarks:
/s/ Lily J. Lu, Attorney-in-Fact for Michael G. Erickson 03/03/2026
** 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.

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.