IDEXX (IDXX) EVP Fennell reports RSU vesting and tax share withholding

Rhea-AI Filing Summary

Executive Vice President George Fennell of IDEXX Laboratories reported routine equity compensation activity involving restricted stock units that vested on June 1, 2026. He acquired 639 shares of common stock through the conversion of restricted stock units, while 284 shares were disposed of to cover tax obligations. After these transactions, he directly holds 10,433 shares of common stock, reflecting a net increase in his equity position.

Insider Trade Summary

639 shares exercised/converted

Mixed 3 txns

Insider FENNELL GEORGE

Role Executive Vice President

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	639	$0.00	--
Exercise	Common Stock	639	$0.00	--
Tax Withholding	Common Stock	284	$566.79	$161K

Holdings After Transaction: Restricted Stock Unit — 0 shares (Direct, null); Common Stock — 10,717 shares (Direct, null)

Footnotes (1)

1. Each Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock and vested in one installment on June 1, 2026. Not applicable.

Key Figures

Shares acquired via RSU conversion: 639 shares Shares withheld for taxes: 284 shares Post-transaction holdings: 10,433 shares +2 more

5 metrics

Shares acquired via RSU conversion 639 shares Common stock from restricted stock units on June 1, 2026

Shares withheld for taxes 284 shares Common stock disposed in tax-withholding transaction on June 1, 2026

Post-transaction holdings 10,433 shares Directly held IDEXX common stock after June 1, 2026 transactions

Tax-withholding price $566.79 per share Price per share for 284-share tax-withholding disposition

RSU exercise price $0.00 per unit Conversion of 639 restricted stock units into common stock

Key Terms

Restricted Stock Unit, tax-withholding disposition, Exercise or conversion of derivative security, Executive Vice President

4 terms

Restricted Stock Unit financial

"Each Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

tax-withholding disposition financial

"transaction_action: tax-withholding disposition for 284 common shares"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Exercise or conversion of derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

Executive Vice President financial

"George Fennell serves as Executive Vice President of IDEXX Laboratories"

An executive vice president is a high-ranking leader within a company who oversees major parts of its operations or strategies. Think of them as senior managers responsible for important areas, similar to a vice principal in a school hierarchy. Their role matters to investors because they help guide the company's success and decision-making at the top level.

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Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

FENNELL GEORGE

(Last) (First) (Middle)

ONE IDEXX DRIVE

(Street)

WESTBROOK MAINE 04092

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	06/01/2026		M		639	A	$0	10,717	D
Common Stock	06/01/2026		F		284	D	$566.79	10,433	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
Restricted Stock Unit	(1)	06/01/2026		M			639	(1)	(1)	Common Stock	639	(2)	0	D

Explanation of Responses:

1. Each Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock and vested in one installment on June 1, 2026.

2. Not applicable.

Remarks:

	/s/ Lily J. Lu, Attorney-in-Fact for George Fennell	06/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did IDEXX (IDXX) executive George Fennell report in this Form 4?

George Fennell reported routine equity compensation activity. Restricted stock units vested into 639 common shares on June 1, 2026, and 284 shares were withheld to pay taxes, resulting in a higher direct shareholding after the transactions.

How many IDEXX (IDXX) shares did George Fennell acquire and dispose of?

He acquired 639 shares of IDEXX common stock through the conversion of restricted stock units and disposed of 284 shares to satisfy tax liabilities. This sequence produced a net increase of shares held in his direct ownership account.

What is George Fennell’s IDEXX (IDXX) shareholding after the reported transactions?

Following the June 1, 2026 transactions, George Fennell directly holds 10,433 shares of IDEXX common stock. This figure reflects the restricted stock unit conversion and the shares withheld to cover associated tax obligations on the vested equity award.

Were George Fennell’s IDEXX (IDXX) Form 4 transactions open‑market buys or sales?

No open‑market trades were reported. The filing shows a conversion of restricted stock units into 639 common shares and a 284‑share disposition strictly to cover tax liabilities, rather than discretionary buying or selling on the open market.

What do the restricted stock units in the IDEXX (IDXX) Form 4 represent?

Each restricted stock unit represented a right to receive one IDEXX common share and vested in a single installment on June 1, 2026. Upon vesting, the units converted into 639 common shares, with some shares withheld to satisfy tax obligations.