Avantor (AVTR) insider boosts direct holdings to 283,424 shares

Rhea-AI Filing Summary

Avantor, Inc. (AVTR) disclosed that a reporting person who serves as both President and CEO and a director acquired common stock in the company. On 11/17/2025, this insider purchased 87,500 shares of Avantor common stock at a price of $11.35 per share. Following this open-market purchase, the insider beneficially owns 283,424 shares, held directly.

Insights

Equity Analyst

CEO made a sizable open-market share purchase, increasing direct ownership and economic alignment with other holders.

The filing shows the President and CEO of Avantor, Inc. acquired 87,500 shares of common stock on 11/17/2025. The transaction code is "P", indicating a purchase, at a reported price of $11.35 per share. After this transaction, the executive directly owns 283,424 shares, reflecting a higher personal stake in the company.

This kind of open-market purchase increases the executive's direct financial exposure to the company’s equity. That creates stronger alignment between management’s economic outcomes and those of other holders, since more of the executive’s personal wealth now depends on the company’s performance. The filing does not describe any related derivative securities activity, so the change here is purely in non-derivative common stock.

The key item to watch going forward is whether this purchase is an isolated event or part of a recurring pattern of ownership changes reported on future Forms 4. The transaction date of 11/17/2025 provides a clear reference point for comparing any subsequent filings that report additional acquisitions, sales, or changes in the CEO’s beneficial ownership level.

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^*

Ligner Emmanuel

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
11/17/2025

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	11/17/2025		P		87,500	A	$11.35	283,424	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:

Remarks:

	/s/ Scott K. Baker, as Attorney-in-Fact	11/17/2025
	** 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

What insider transaction did Avantor, Inc. (AVTR) report?

Avantor, Inc. (AVTR) reported that an insider acquired 87,500 shares of its common stock in an open-market purchase.

On what date did the Avantor (AVTR) insider stock purchase occur?

The insider purchase of Avantor common stock took place on 11/17/2025.

What was the purchase price for the Avantor (AVTR) insider share acquisition?

The reporting person bought Avantor common stock at a price of $11.35 per share.

How many Avantor (AVTR) shares does the insider own after the transaction?

After the reported transaction, the insider beneficially owns 283,424 shares of Avantor common stock, held directly.

What is the relationship of the reporting person to Avantor, Inc. (AVTR)?

The reporting person is both a director and an officer of Avantor, serving as President and CEO.

Is the Avantor (AVTR) insider Form 4 filed for one person or multiple persons?

The report indicates that it is a Form filed by one reporting person, not a group filing.

Was the Avantor (AVTR) insider transaction a purchase or a sale?

The transaction was coded as P, indicating a purchase of Avantor common stock.