Avantor, Inc. - Director's Dealing 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Avantor, Inc. (AVTR)
CIK: 0001722482
Period of Report: 2026-02-19

Reporting Person: Hankamer Brittany (EVP, Chief HR Officer)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-19	Common Stock	A	80618	—	Acquired	252181	Direct
2026-02-20	Common Stock	F	1453	$9.03	Disposed	250728	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-19	Stock Options (Right to Buy)	$11.05	A	317310	Acquired	2036-02-19	Common Stock (317310)	Direct

F1: Reflects a grant of restricted stock units that vest in three equal annual installments beginning on February 19, 2027.

F2: Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

F3: Reflects a grant of stock options that vest in three equal installments beginning on February 19, 2027.