SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* GOLDMAN SACHS & CO. LLC (Last) (First) (Middle) 200 WEST STREET (Street) NEW YORK NY 10282 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/16/2019	3. Issuer Name and Ticker or Trading Symbol Avantor, Inc. [ AVTR ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01 per share	72,605,349(1)(2)(3)	I(2)(3)	See Footnotes(2)(3)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* GOLDMAN SACHS & CO. LLC (Last) (First) (Middle) 200 WEST STREET (Street) NEW YORK NY 10282 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* GOLDMAN SACHS GROUP INC (Last) (First) (Middle) 200 WEST STREET (Street) NEW YORK NY 10282 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* StoneBridge 2017 Offshore, L.P. (Last) (First) (Middle) 200 WEST STREET (Street) NEW YORK NY 10282-2198 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* StoneBridge 2017, L.P. (Last) (First) (Middle) 200 WEST STREET (Street) NEW YORK NY 10282-2198 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Broad Street Principal Investments, L.L.C. (Last) (First) (Middle) 200 WEST STREET (Street) NEW YORK NY 10282 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. This statement is being filed by Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs & Co., LLC ("Goldman Sachs"), StoneBridge 2017, L.P., ("StoneBridge 2017") StoneBridge 2017 Offshore, L.P. ("StoneBridge 2017 Offshore"), Broad Street Principal Investments, L.L.C. ("BSPI"), VWR Partners, L.P. ("VWR"), StoneBridge 2018, L.P. ("StoneBridge 2018") and StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore") (together, the "Reporting Persons").

2. Goldman Sachs and GS Group may be deemed to beneficially own indirectly, in the aggregate, 72,605,349 shares of Common Stock, $0.01 par value per share ("Common Stock"), of Avantor, Inc. (the "Issuer") by reason of the direct beneficial ownership of such shares by BSPI, StoneBridge 2017, StoneBridge 2017 Offshore, VWR, StoneBridge 2018 and StoneBridge 2018 Offshore (together, the "GS Funds") because affiliates of Goldman Sachs and GS Group are the general partner, managing limited partner, managing general partner, managing partner, managing member or member of each of the GS Funds. Goldman Sachs is a wholly-owned subsidiary of GS Group. Goldman Sachs is the investment manager of certain of the GS Funds.

3. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Exchange Act, or for any other purpose.

Remarks:

	/s/Jennifer Lee	05/20/2019
	/s/Jennifer Lee	05/20/2019
	/s/Jennifer Lee	05/20/2019
	/s/Jennifer Lee	05/20/2019
	/s/Jennifer Lee	05/20/2019
	** Signature of Reporting Person	Date
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