Avantor (AVTR) executive has shares withheld to cover RSU taxes

Rhea-AI Filing Summary

Avantor, Inc. reported that executive Corey Walker, President of VWR Distribution & Services, had 3,010 shares of Common Stock withheld at $9.58 per share to cover tax withholding obligations tied to vesting restricted stock units (RSUs). This was not an open-market sale but a tax-related share disposition. After this withholding, Walker directly holds 384,535 shares of Avantor common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Walker Corey

Role President, VWR Dist. & Servs.

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	3,010	$9.58	$29K

Holdings After Transaction: Common Stock — 384,535 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for taxes: 3,010 shares Withholding price: $9.58 per share Shares after transaction: 384,535 shares +1 more

4 metrics

Shares withheld for taxes 3,010 shares Withheld to cover RSU-related tax obligations

Withholding price $9.58 per share Value used for tax-withholding share disposition

Shares after transaction 384,535 shares Directly held Avantor Common Stock after withholding

Transaction type Tax-withholding disposition (Code F) Shares delivered to satisfy tax liability on RSU vesting

Key Terms

RSUs, tax withholding obligations, Common Stock, transaction code F

4 terms

RSUs financial

"in connection with the vesting of RSUs"

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

tax withholding obligations financial

"shares withheld by the Issuer to cover tax withholding obligations"

Common Stock financial

"Represents the number of shares of Common Stock withheld"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

transaction code F regulatory

"transaction_code: "F" indicates tax-withholding disposition"

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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^*

Walker Corey

(Last) (First) (Middle)

RADNOR CORPORATE CENTER, BUILDING ONE,

SUITE 200, 100 MATSONFORD ROAD

(Street)

RADNOR PENNSYLVANIA 19087

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	President, VWR Dist. & Servs.

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/21/2026

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	06/21/2026		F(1)		3,010	D	$9.58	384,535	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 Corey Walker	06/22/2026
	** 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 Avantor (AVTR) executive Corey Walker report in this Form 4?

Corey Walker reported a tax-related share withholding. Avantor withheld 3,010 shares of Common Stock at $9.58 per share to satisfy tax obligations from RSU vesting, leaving him with 384,535 directly held shares afterward.

Was Corey Walker’s Avantor (AVTR) transaction an open-market sale?

No, the transaction was not an open-market sale. The 3,010 Avantor shares were withheld by the company to cover tax withholding obligations triggered by vesting RSUs, a routine compensation-related event rather than a discretionary sale.

How many Avantor (AVTR) shares were withheld for Corey Walker’s taxes?

Avantor withheld 3,010 shares for taxes. These Common Stock shares, valued at $9.58 each, were used to satisfy tax withholding obligations associated with Corey Walker’s RSU vesting, according to the Form 4 filing details.

How many Avantor (AVTR) shares does Corey Walker hold after this filing?

Corey Walker holds 384,535 Avantor shares after the transaction. This total reflects his direct ownership of Common Stock following the 3,010-share tax withholding connected to vesting RSUs, as disclosed in the Form 4.

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

Transaction code F indicates tax-related share withholding. In this Avantor filing, code F shows shares were delivered to cover exercise price or tax liability, here specifically to satisfy RSU-related tax withholding for Corey Walker.