LUCIER GREGORY T. - 19 Feb 2026 Form 4 Insider Report for Avantor, Inc. (AVTR)

Role: Director
Signature: /s/ Scott Baker, by power of attorney for Gregory Lucier
Issuer symbol: AVTR
Transactions as of: 19 Feb 2026
Net transactions value: +$458,000
Form type: 4
Filing time: 23 Feb 2026, 20:53:53 UTC
Previous filing: 13 Jan 2026
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
LUCIER GREGORY T	Director	RADNOR CORPORATE CENTER, BUILDING ONE,, SUITE 200, 100 MATSONFORD ROAD,, RADNOR	/s/ Scott Baker, by power of attorney for Gregory Lucier	23 Feb 2026	0001251299

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AVTR	Common Stock	Purchase	$458,000	+50,000		$9.16	50,000	19 Feb 2026	By a Trust	F1, F2
holding	AVTR	Common Stock						8,736	19 Feb 2026	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $9.06 to $9.25, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth above.
F2	By a trust of which the reporting person serves as trustee and is a beneficiary. The reporting person disclaims beneficial ownership except to the extent of his pecuniary interest therein.

Content

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $9.06 to $9.25, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth above.

By a trust of which the reporting person serves as trustee and is a beneficiary. The reporting person disclaims beneficial ownership except to the extent of his pecuniary interest therein.