Avantor, Inc. — Director's Dealing 2019

May 17, 2019

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Avantor, Inc. (AVTR)
CIK: 0001722482
Period of Report: 2019-05-16

Reporting Person: Stubblefield Michael (Director, President and CEO)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	34152	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Options (Right to Buy)	$1.60	2024-05-12	Common Stock (1290970)		Direct
Stock Options (Right to Buy)	$3.13	2024-05-12	Common Stock (430325)		Direct
Stock Options (Right to Buy)	$4.19	2026-01-20	Common Stock (57375)		Direct
Stock Options (Right to Buy)	$13.11	2026-09-30	Common Stock (750000)		Direct
Stock Options (Right to Buy)	$23.21	2027-12-13	Common Stock (3380200)		Direct

Footnotes

F1: These options are fully vested.

F2: Reflects options that vest in four equal annual installments beginning on January 20, 2017.

F3: Reflects options that vest in four equal annual installments beginning on September 30, 2017.

F4: Reflects options that vest as follows: (a) 60% vests in four equal annual installments beginning on December 13, 2018, and (b) 40% vests upon consummation of the Issuer's initial public offering.