Avantor, Inc. — Director's Dealing 2026

Feb 24, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

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

Reporting Person: Blenn Mary (EVP, Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-19	Common Stock	A	235993	—	Acquired	253384	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-19	Stock Options (Right to Buy)	$11.05	A	1041766	Acquired	2036-02-19	Common Stock (1041766)	Direct

Footnotes

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

F2: Reflects a grant of stock options that vest in three equal annual installments beginning on February 19, 2027.