Statement of Changes in Beneficial Ownership (4)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Natauri Jo	2. Issuer Name and Ticker or Trading Symbol Avantor, Inc. [ AVTR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below)
(Last) (First) (Middle) C/O GOLDMAN SACHS & CO. LLC, 200 WEST STREET	3. Date of Earliest Transaction (MM/DD/YYYY) 5/11/2021
(Street) NEW YORK, NY 10282 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, par value $0.01 per share ⁽¹⁾	5/11/2021		S⁽²⁾		2626771	D	$30.68	24807517.77 ⁽⁵⁾⁽⁶⁾	I	See Footnotes ⁽⁵⁾⁽⁶⁾
Common Stock, par value $0.01 per share ⁽¹⁾	5/11/2021		J⁽³⁾		24729495	D	$30.86	175624.77 ⁽⁵⁾⁽⁶⁾	I	See Footnotes ⁽⁵⁾⁽⁶⁾
Common Stock, par value $0.01 per share ⁽¹⁾	5/11/2021		J⁽⁴⁾		92661	A	$30.86	92661	D

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:
(1)	The Reporting Person is a managing director of Goldman Sachs & Co. LLC ("Goldman Sachs"). Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Goldman Sachs is the investment manager of each of StoneBridge 2017, L.P. ("StoneBridge 2017"), StoneBridge 2017 Offshore, L.P. ("StoneBridge 2017 Offshore"), VWR Partners, L.P. ("VWR"), StoneBridge 2018, L.P. ("StoneBridge 2018") and StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds, a direct wholly-owned subsidiary of GS Fund Holdings, L.L.C. ("GS Fund Holdings") and an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of Bridge Street and Broad Street Principal Investments, L.L.C. ("BSPI").
(2)	Represents an open market sale by BSPI (the "Sale"). Does not reflect a sale by the Reporting Person.
(3)	This transaction reflects the distribution of shares of the common stock (the "Common Stock") of Avantor, Inc. pursuant to a pro rata distribution-in-kind by the GS Funds (the "Distribution-in-Kind").
(4)	This transaction reflects the receipt of shares of Common Stock by the Reporting Person pursuant to the pro rata Distribution-in-Kind.
(5)	After giving effect to the Distribution-in-Kind and the Sale on May 11, 2021, Goldman Sachs and GS Group may be deemed to beneficially own indirectly 99,243 shares of Common Stock by reason of the direct beneficial ownership of such shares as follows: (i) GS Fund Holdings owns directly 97,602 shares of Common Stock, (ii) StoneBridge 2017 owns directly 338 shares of Common Stock, (iii) StoneBridge 2017 Offshore owns directly 151 shares of Common Stock, (iv) VWR owns directly 547 shares of Common Stock, (v) StoneBridge 2018 owns directly 457 shares of Common Stock and (vi) StoneBridge 2018 Offshore owns directly 148 shares of Common Stock.
(6)	The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of the Reporting Person's pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Exchange Act of 1934, or for any other purpose.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Natauri Jo C/O GOLDMAN SACHS & CO. LLC 200 WEST STREET NEW YORK, NY 10282	X