Avantor (AVTR) Form 4: 2,730 Shares Withheld, 231k Held

Rhea-AI Filing Summary

Avantor, Inc. (AVTR) – SEC Form 4 filing

Company insider Corey Walker, President of Laboratory Solutions, reported a routine tax-related share withholding on 21 June 2025. The filing shows 2,730 common shares (transaction code F) were surrendered at an indicated price of $13.57 to satisfy statutory withholding obligations triggered by the vesting of restricted stock units (RSUs). After the transaction, Walker continues to hold 231,271 shares directly.

No derivative security activity, 10b5-1 plan disclosure, or additional insider transactions were reported. The small size of the disposition (≈1.2 % of Walker’s post-transaction holdings) and its tax-withholding nature make the event immaterial to the company’s capital structure and unlikely to influence the investment thesis for AVTR.

Insights

Financial Analyst

TL;DR: Routine tax withholding; negligible impact on AVTR valuation.

The Form 4 shows an officer surrendering 2,730 shares—just over 1 % of his stake—to cover RSU taxes. No open-market sale, so there’s no bearish signal on fundamentals. With 231k shares still owned, alignment of management and shareholder interests remains intact. The transaction size is immaterial relative to Avantor’s 675 million outstanding shares; therefore, it should not affect liquidity, float, or sentiment.

Corporate Governance Expert

TL;DR: Governance-neutral filing; complies with Section 16 reporting.

The insider met Section 16 obligations, filing within two business days. Code F confirms shares were withheld by the issuer, aligning with standard corporate practices for RSU tax settlement. No 10b5-1 box was marked, suggesting the withholding was automatic, not discretionary. There are no red flags regarding compliance or insider confidence.

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
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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^*

Walker Corey

(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)
	President Laboratory Solutions

3. Date of Earliest Transaction (Month/Day/Year)
06/21/2025

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	06/21/2025		F(1)		2,730	D	$13.57	231,271	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, as Attorney-in-Fact	06/24/2025
	** 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.

FAQ

How many Avantor (AVTR) shares did Corey Walker dispose of in this Form 4?

The filing reports 2,730 common shares were disposed of.

What was the purpose of the AVTR share disposition?

The shares were withheld by the issuer to cover tax obligations related to RSU vesting (transaction code F).

What price was assigned to the withheld shares?

The transaction lists a price of $13.57 per share.

How many AVTR shares does Corey Walker own after the transaction?

Walker directly owns 231,271 common shares following the withholding.

Did the filing indicate the use of a Rule 10b5-1 trading plan?

The Form 4 includes a 10b5-1 checkbox, but it was not marked; no plan was disclosed.