Avantor (AVTR) EVP uses 3,029 shares to satisfy RSU taxes

Rhea-AI Filing Summary

Avantor EVP Benoit Gourdier reported a tax-related share disposition. On February 23, 2026, 3,029 shares of Avantor common stock were withheld at $8.89 per share to cover tax obligations from vesting restricted stock units, leaving him with 362,859 directly held shares.

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^*

Gourdier Benoit

(Last) (First) (Middle)

RADNOR CORPORATE CENTER, BUILDING ONE,

SUITE 200, 100 MATSONFORD ROAD

(Street)

RADNOR PA 19087

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Avantor, Inc. [ AVTR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Bioscience & Medtech

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

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	02/23/2026		F(1)		3,029	D	$8.89	362,859	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

Explanation of Responses:

1. Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

Remarks:

	/s/ Scott Baker, by power of attorney for Benoit Gourdier	02/25/2026
	** 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).
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FAQ

What insider transaction did Avantor (AVTR) report for Benoit Gourdier?

Avantor reported that EVP Benoit Gourdier had 3,029 common shares withheld at $8.89 per share. These shares were used to cover tax obligations arising from the vesting of restricted stock units, rather than being sold in an open-market transaction.

Was the Avantor (AVTR) Form 4 transaction an open-market stock sale?

No, the Form 4 shows a tax-withholding disposition, not an open-market sale. 3,029 shares were withheld by Avantor to satisfy Gourdier’s tax obligations from RSU vesting, according to the filing’s footnote description of the transaction.

How many Avantor (AVTR) shares does Benoit Gourdier hold after this Form 4?

After the tax-withholding transaction, Benoit Gourdier directly holds 362,859 Avantor common shares. This balance reflects the 3,029 shares withheld by the company to cover RSU-related tax obligations and represents his remaining direct ownership position.

What does transaction code F mean in the Avantor (AVTR) Form 4?

Transaction code F indicates a tax-withholding disposition of shares. In this Avantor filing, 3,029 shares were withheld by the issuer to pay tax liabilities connected to vesting restricted stock units, rather than representing a voluntary market trade by the executive.

What role does Benoit Gourdier hold at Avantor (AVTR) in this Form 4?

In this Form 4, Benoit Gourdier is identified as an officer of Avantor, serving as Executive Vice President, Bioscience & Medtech. The reported tax-withholding share disposition relates to his equity compensation in that executive role at the company.