Avantor, Inc. - Director's Dealing 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Avantor, Inc. (AVTR)
CIK: 0001722482
Period of Report: 2025-02-20

Reporting Person: Couturier Christophe (EVP, AMEA)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-20	Common Stock	A	12864	—	Acquired	87221	Direct
2025-02-23	Common Stock	F	1506	$17.30	Disposed	85715	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-20	Stock Options (Right to Buy)	$17.49	A	31163	Acquired	2035-02-20	Common Stock (31163)	Direct

F1: Reflects a grant of restricted stock units that vest in three equal annual installments beginning on February 20, 2026.

F2: Includes 425 shares acquired under the Avantor Employee Stock Purchase Plan.

F3: Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

F4: Reflects a grant of stock options that vest in three equal installments beginning on February 20, 2026.