AVTR

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 14

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,161

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 13

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,665,361

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 12

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,161

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 11

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,683,598

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 10

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,449

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group").

F4 · balance_after: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

F4 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 9

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,458

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group").

F4 · balance_after: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

F4 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 8

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,449

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group").

F4 · balance_after: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

F4 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 7

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,632,694

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group").

F4 · balance_after: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

F4 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

SEC source: 0000899243-21-018643 · doc4.xml · nonDerivative · entry 10

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,449

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported by the Reporting Person on Form 4.

F2 · security: These transactions were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business. Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Effective May 7, 2020, the Reporting Person ceased to be a member of the Issuer's board of directors.

F4 · balance_after: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

F4 · ownership.nature: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

SEC source: 0000899243-21-018643 · doc4.xml · nonDerivative · entry 9

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,458

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported by the Reporting Person on Form 4.

F2 · security: These transactions were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business. Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Effective May 7, 2020, the Reporting Person ceased to be a member of the Issuer's board of directors.

F4 · balance_after: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

F4 · ownership.nature: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

SEC source: 0000899243-21-018643 · doc4.xml · nonDerivative · entry 8

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,449

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported by the Reporting Person on Form 4.

F2 · security: These transactions were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business. Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Effective May 7, 2020, the Reporting Person ceased to be a member of the Issuer's board of directors.

F4 · balance_after: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

F4 · ownership.nature: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

SEC source: 0000899243-21-018643 · doc4.xml · nonDerivative · entry 7

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,632,694

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported by the Reporting Person on Form 4.

F2 · security: These transactions were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business. Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Effective May 7, 2020, the Reporting Person ceased to be a member of the Issuer's board of directors.

F4 · balance_after: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

F4 · ownership.nature: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 10

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,449

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 9

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,458

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 8

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,616,449

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 7

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,632,694

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 6

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,614,176.87

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group").

F4 · balance_after: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

F4 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 5

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,614,264.87

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group").

F4 · balance_after: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

F4 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

SEC source: 0000899243-21-018643 · doc4.xml · nonDerivative · entry 6

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,614,176.87

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported by the Reporting Person on Form 4.

F2 · security: These transactions were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business. Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Effective May 7, 2020, the Reporting Person ceased to be a member of the Issuer's board of directors.

F4 · balance_after: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

F4 · ownership.nature: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

SEC source: 0000899243-21-018643 · doc4.xml · nonDerivative · entry 5

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,614,264.87

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported by the Reporting Person on Form 4.

F2 · security: These transactions were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business. Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Effective May 7, 2020, the Reporting Person ceased to be a member of the Issuer's board of directors.

F4 · balance_after: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

F4 · ownership.nature: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 6

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,614,176.87

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 5

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,614,264.87

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 4

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,612,175

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group").

F4 · balance_after: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

F4 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 3

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,612,230

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group").

F4 · balance_after: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

F4 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of her 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, or for any other purpose.

SEC source: 0000899243-21-018643 · doc4.xml · nonDerivative · entry 4

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,612,175

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported by the Reporting Person on Form 4.

F2 · security: These transactions were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business. Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Effective May 7, 2020, the Reporting Person ceased to be a member of the Issuer's board of directors.

F4 · balance_after: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

F4 · ownership.nature: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

SEC source: 0000899243-21-018643 · doc4.xml · nonDerivative · entry 3

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,612,230

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported by the Reporting Person on Form 4.

F2 · security: These transactions were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business. Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: The Reporting Person is a managing director of Goldman Sachs. Goldman Sachs is a direct subsidiary of The Goldman Sachs Group, Inc. ("GS Group"). Effective May 7, 2020, the Reporting Person ceased to be a member of the Issuer's board of directors.

F4 · balance_after: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · balance_after: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

F4 · ownership.nature: As of October 21,2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly 43,481,933 shares of Common Stock by reason of direct beneficial ownership of such shares by StoneBridge 2017, L.P., StoneBridge 2017 Offshore, L.P., VWR Partners, L.P., StoneBridge 2018, L.P. and StoneBridge 2018 Offshore, L.P. (together the "GS Funds") and Broad Street Principal Investments, L.L.C. ("BSPI"). Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street") is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds. Bridge Street is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds.

F5 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his 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, or for any other purpose.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 4

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,612,175

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000899243-21-018645 · doc4.xml · nonDerivative · entry 3

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,612,230

F1 · security: These transactions in the common stock (the "Common Stock") of Avantor, Inc. (the "Issuer") have not previously been reported on Form 4 and were effected by Goldman Sachs & Co. LLC ("Goldman Sachs") acting as agent on behalf of certain international affiliates that had entered into riskless principal trades in connection with client trade facilitation in the ordinary course of their business.

F2 · security: Without conceding riskless principal trades in connection with client trade facilitation in the ordinary course of business can result in liability under Section 16(b) of the Securities Exchange Act of 1934 (the "Exchange Act"), the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that they were subject to Section 16(b) has been remitted to the Issuer.

F3 · security: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs, Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F4 · balance_after: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · balance_after: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F4 · ownership.nature: Bridge Street is the sole general partner of each of the GS Funds and may be deemed to beneficially own shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds.

F5 · ownership.nature: Goldman Sachs and GS Group may be deemed to beneficially own indirectly shares of Common Stock by reason of direct beneficial ownership of such shares by the GS Funds and BSPI. Bridge Street, the sole general partner of each of the GS Funds, is an indirect wholly-owned subsidiary of GS Group. Goldman Sachs is the manager of BSPI and Bridge Street, and the investment manager of each of the GS Funds. Goldman Sachs is a direct subsidiary of GS Group.

F6 · ownership.nature: As of November 6, 2020, Goldman Sachs and GS Group may have been deemed to beneficially own indirectly, in the aggregate, 43,481,933 shares of the Common Stock of the Issuer by reason of the direct or indirect beneficial ownership of such shares as follows: (i) BSPI owned directly 10,507,085 shares of Common Stock, (ii) StoneBridge 2017 owned directly 683,221 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 315,779 shares of Common Stock, (iv) VWR owned directly 29,007,209 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,089,674 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 878,965 shares of Common Stock.

F7 · ownership.nature: 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.

SEC source: 0000769993-20-000245 · ownershipdoc05182020092135.xml · derivative · entry 3

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Stock · 1,133,920 shares

Expires not disclosed

F2 · derivative.exercise_date: On June 13, 2019, the Reporting Persons exercised an aggregate of 1,133,920 warrants to acquire shares of common stock, par value $0.01 per share, of the Issuer (the "Common Stock") on a one-for-one basis. Specifically, (i) 1,080,595 warrants were exercised by BSPI; (ii) 36,475 warrants were exercised by StoneBridge 2017; and (iii) 16,850 warrants were exercised by StoneBridge 2017 Offshore.

F3 · derivative.exercise_date: The terms of the warrants are set forth in the warrant certificate, a form of which was filed on May 3, 2019 as Exhibit 10.12 to the Issuer's registration statement on Form S-1. After giving effect to the exercise of the warrants, prior to the Offering described below, (i) BSPI owned directly 31,943,095 shares of Common Stock, (ii) StoneBridge 2017 owned directly 842,500 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 389,396 shares of Common Stock, (iv) VWR owned directly 35,769,643 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,576,838 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 1,083,877 shares of Common Stock.

F2 · derivative.expiration_date: On June 13, 2019, the Reporting Persons exercised an aggregate of 1,133,920 warrants to acquire shares of common stock, par value $0.01 per share, of the Issuer (the "Common Stock") on a one-for-one basis. Specifically, (i) 1,080,595 warrants were exercised by BSPI; (ii) 36,475 warrants were exercised by StoneBridge 2017; and (iii) 16,850 warrants were exercised by StoneBridge 2017 Offshore.

F3 · derivative.expiration_date: The terms of the warrants are set forth in the warrant certificate, a form of which was filed on May 3, 2019 as Exhibit 10.12 to the Issuer's registration statement on Form S-1. After giving effect to the exercise of the warrants, prior to the Offering described below, (i) BSPI owned directly 31,943,095 shares of Common Stock, (ii) StoneBridge 2017 owned directly 842,500 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 389,396 shares of Common Stock, (iv) VWR owned directly 35,769,643 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,576,838 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 1,083,877 shares of Common Stock.

F2 · derivative.underlying: On June 13, 2019, the Reporting Persons exercised an aggregate of 1,133,920 warrants to acquire shares of common stock, par value $0.01 per share, of the Issuer (the "Common Stock") on a one-for-one basis. Specifically, (i) 1,080,595 warrants were exercised by BSPI; (ii) 36,475 warrants were exercised by StoneBridge 2017; and (iii) 16,850 warrants were exercised by StoneBridge 2017 Offshore.

F3 · derivative.underlying: The terms of the warrants are set forth in the warrant certificate, a form of which was filed on May 3, 2019 as Exhibit 10.12 to the Issuer's registration statement on Form S-1. After giving effect to the exercise of the warrants, prior to the Offering described below, (i) BSPI owned directly 31,943,095 shares of Common Stock, (ii) StoneBridge 2017 owned directly 842,500 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 389,396 shares of Common Stock, (iv) VWR owned directly 35,769,643 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,576,838 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 1,083,877 shares of Common Stock.

F2 · derivative.underlying_shares: On June 13, 2019, the Reporting Persons exercised an aggregate of 1,133,920 warrants to acquire shares of common stock, par value $0.01 per share, of the Issuer (the "Common Stock") on a one-for-one basis. Specifically, (i) 1,080,595 warrants were exercised by BSPI; (ii) 36,475 warrants were exercised by StoneBridge 2017; and (iii) 16,850 warrants were exercised by StoneBridge 2017 Offshore.

F3 · derivative.underlying_shares: The terms of the warrants are set forth in the warrant certificate, a form of which was filed on May 3, 2019 as Exhibit 10.12 to the Issuer's registration statement on Form S-1. After giving effect to the exercise of the warrants, prior to the Offering described below, (i) BSPI owned directly 31,943,095 shares of Common Stock, (ii) StoneBridge 2017 owned directly 842,500 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 389,396 shares of Common Stock, (iv) VWR owned directly 35,769,643 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,576,838 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 1,083,877 shares of Common Stock.

F1 · ownership.nature: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs & Co. LLC ("Goldman Sachs"), Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F2 · ownership.nature: On June 13, 2019, the Reporting Persons exercised an aggregate of 1,133,920 warrants to acquire shares of common stock, par value $0.01 per share, of the Issuer (the "Common Stock") on a one-for-one basis. Specifically, (i) 1,080,595 warrants were exercised by BSPI; (ii) 36,475 warrants were exercised by StoneBridge 2017; and (iii) 16,850 warrants were exercised by StoneBridge 2017 Offshore.

F3 · ownership.nature: The terms of the warrants are set forth in the warrant certificate, a form of which was filed on May 3, 2019 as Exhibit 10.12 to the Issuer's registration statement on Form S-1. After giving effect to the exercise of the warrants, prior to the Offering described below, (i) BSPI owned directly 31,943,095 shares of Common Stock, (ii) StoneBridge 2017 owned directly 842,500 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 389,396 shares of Common Stock, (iv) VWR owned directly 35,769,643 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,576,838 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 1,083,877 shares of Common Stock.

F9 · ownership.nature: 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.

SEC source: 0000769993-20-000245 · ownershipdoc05182020092135.xml · nonDerivative · entry 1

GOLDMAN SACHS & CO. LLC · CIK 0000769993 · 10% owner

StoneBridge 2017, L.P. · CIK 0001698772 · 10% owner

StoneBridge 2017 Offshore, L.P. · CIK 0001698770 · 10% owner

VWR Partners, L.P. · CIK 0001708241 · 10% owner

Broad Street Principal Investments, L.L.C. · CIK 0001575993 · 10% owner

Bridge Street Opportunity Advisors, L.L.C. · CIK 0001615636 · 10% owner

GOLDMAN SACHS GROUP INC · CIK 0000886982 · 10% owner

StoneBridge 2018, L.P. · CIK 0001729502 · 10% owner

StoneBridge 2018 Offshore, L.P. · CIK 0001729503 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,605,349

F2 · shares: On June 13, 2019, the Reporting Persons exercised an aggregate of 1,133,920 warrants to acquire shares of common stock, par value $0.01 per share, of the Issuer (the "Common Stock") on a one-for-one basis. Specifically, (i) 1,080,595 warrants were exercised by BSPI; (ii) 36,475 warrants were exercised by StoneBridge 2017; and (iii) 16,850 warrants were exercised by StoneBridge 2017 Offshore.

F3 · shares: The terms of the warrants are set forth in the warrant certificate, a form of which was filed on May 3, 2019 as Exhibit 10.12 to the Issuer's registration statement on Form S-1. After giving effect to the exercise of the warrants, prior to the Offering described below, (i) BSPI owned directly 31,943,095 shares of Common Stock, (ii) StoneBridge 2017 owned directly 842,500 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 389,396 shares of Common Stock, (iv) VWR owned directly 35,769,643 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,576,838 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 1,083,877 shares of Common Stock.

F2 · balance_after: On June 13, 2019, the Reporting Persons exercised an aggregate of 1,133,920 warrants to acquire shares of common stock, par value $0.01 per share, of the Issuer (the "Common Stock") on a one-for-one basis. Specifically, (i) 1,080,595 warrants were exercised by BSPI; (ii) 36,475 warrants were exercised by StoneBridge 2017; and (iii) 16,850 warrants were exercised by StoneBridge 2017 Offshore.

F3 · balance_after: The terms of the warrants are set forth in the warrant certificate, a form of which was filed on May 3, 2019 as Exhibit 10.12 to the Issuer's registration statement on Form S-1. After giving effect to the exercise of the warrants, prior to the Offering described below, (i) BSPI owned directly 31,943,095 shares of Common Stock, (ii) StoneBridge 2017 owned directly 842,500 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 389,396 shares of Common Stock, (iv) VWR owned directly 35,769,643 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,576,838 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 1,083,877 shares of Common Stock.

F1 · ownership.nature: This statement is being filed by The Goldman Sachs Group, Inc. ("GS Group"), Goldman Sachs & Co. LLC ("Goldman Sachs"), Broad Street Principal Investments, L.L.C. ("BSPI"), 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"), StoneBridge 2018 Offshore, L.P. ("StoneBridge 2018 Offshore" and, together with StoneBridge 2017, StoneBridge 2017 Offshore, VWR and StoneBridge 2018, the "GS Funds") and Bridge Street Opportunity Advisors, L.L.C. ("Bridge Street"). GS Group, Goldman Sachs, BSPI, the GS Funds and Bridge Street are defined collectively as the "Reporting Persons".

F2 · ownership.nature: On June 13, 2019, the Reporting Persons exercised an aggregate of 1,133,920 warrants to acquire shares of common stock, par value $0.01 per share, of the Issuer (the "Common Stock") on a one-for-one basis. Specifically, (i) 1,080,595 warrants were exercised by BSPI; (ii) 36,475 warrants were exercised by StoneBridge 2017; and (iii) 16,850 warrants were exercised by StoneBridge 2017 Offshore.

F3 · ownership.nature: The terms of the warrants are set forth in the warrant certificate, a form of which was filed on May 3, 2019 as Exhibit 10.12 to the Issuer's registration statement on Form S-1. After giving effect to the exercise of the warrants, prior to the Offering described below, (i) BSPI owned directly 31,943,095 shares of Common Stock, (ii) StoneBridge 2017 owned directly 842,500 shares of Common Stock, (iii) StoneBridge 2017 Offshore owned directly 389,396 shares of Common Stock, (iv) VWR owned directly 35,769,643 shares of Common Stock, (v) StoneBridge 2018 owned directly 2,576,838 shares of Common Stock and (vi) StoneBridge 2018 Offshore owned directly 1,083,877 shares of Common Stock.

F9 · ownership.nature: 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.

SEC source: 0000899243-19-014609 · doc4.xml · nonDerivative · entry 1

New Mountain Investments III, LLC · CIK 0001515175 · 10% owner

New Mountain Partners III LP · CIK 0001403510 · 10% owner

New Mountain Capital, L.L.C. · CIK 0001407718 · 10% owner

New Mountain Capital Group, L.P. · CIK 0001777024 · 10% owner

NM Holdings GP, L.L.C. · CIK 0001776766 · 10% owner

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 110,477,989

F1 · ownership.nature: These securities are directly held by New Mountain Partners III, L.P. The general partner of New Mountain Partners III, L.P. is New Mountain Investments III, L.L.C. and the manager of New Mountain Partners III, L.P. is New Mountain Capital, L.L.C. Steven B. Klinsky is the managing member of New Mountain Investments III, L.L.C. The managing member of New Mountain Capital, L.L.C. is New Mountain Capital Group, L.P. The general partner of New Mountain Capital Group, L.P. is NM Holdings GP, L.L.C. Steven B. Klinsky is the managing member of NM Holdings GP, L.L.C. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

SEC source: 0000899243-19-014587 · doc4.xml · derivative · entry 3

GUPTA RAJIV · CIK 0001068731 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 523,286 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Existing Junior Convertible Preferred Stock automatically converted into common stock of the Issuer upon consummation of the Issuer's initial public offering. The number of shares of common stock received upon conversion of the Existing Junior Convertible Preferred Stock was based on the aggregate liquidation preference of such stock divided by the initial public offering price of $14.00 per share.

F2 · derivative.exercise_date: Existing Junior Convertible Preferred Stock automatically converted into common stock of the Issuer upon consummation of the Issuer's initial public offering. The number of shares of common stock received upon conversion of the Existing Junior Convertible Preferred Stock was based on the aggregate liquidation preference of such stock divided by the initial public offering price of $14.00 per share.

F2 · derivative.expiration_date: Existing Junior Convertible Preferred Stock automatically converted into common stock of the Issuer upon consummation of the Issuer's initial public offering. The number of shares of common stock received upon conversion of the Existing Junior Convertible Preferred Stock was based on the aggregate liquidation preference of such stock divided by the initial public offering price of $14.00 per share.

F3 · ownership.nature: Reflects securities held by a trust for the benefit of the Reporting Person's family, of which the spouse of the Reporting Person is trustee. Reporting Person disclaims beneficial ownership of the securities held by the trust, except to the extent of his pecuniary interest therein. The Existing Junior Convertible Preferred were inadvertently reported as directly held by the Reporting Person on the Form 3 filed by him on May 16, 2019.

SEC source: 0000899243-19-014587 · doc4.xml · nonDerivative · entry 2

GUPTA RAJIV · CIK 0001068731 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 843,791

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Existing Junior Convertible Preferred Stock automatically converted into common stock of the Issuer upon consummation of the Issuer's initial public offering. The number of shares of common stock received upon conversion of the Existing Junior Convertible Preferred Stock was based on the aggregate liquidation preference of such stock divided by the initial public offering price of $14.00 per share.

F3 · ownership.nature: Reflects securities held by a trust for the benefit of the Reporting Person's family, of which the spouse of the Reporting Person is trustee. Reporting Person disclaims beneficial ownership of the securities held by the trust, except to the extent of his pecuniary interest therein. The Existing Junior Convertible Preferred were inadvertently reported as directly held by the Reporting Person on the Form 3 filed by him on May 16, 2019.

SEC source: 0000899243-19-014587 · doc4.xml · nonDerivative · entry 1

GUPTA RAJIV · CIK 0001068731 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 554,427

F1 · kind: Reflects a grant of restricted stock units that vests on May 21, 2020.

SEC source: 0000899243-19-014604 · doc4.xml · nonDerivative · entry 1

Bramwell James · CIK 0001776099 · EVP, Strategic Partners

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 128,571

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014579 · doc4.xml · nonDerivative · entry 1

McAllister Eric · CIK 0001776120 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 199,051

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014606 · doc4.xml · nonDerivative · entry 1

Kulkarni Ashish · CIK 0001776119 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 128,571

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014605 · doc4.xml · nonDerivative · entry 1

Couturier Christophe · CIK 0001684076 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,143

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014603 · doc4.xml · derivative · entry 3

Peacock Jonathan M · CIK 0001500241 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 117,857 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Existing Junior Convertible Preferred Stock automatically converted into common stock of the Issuer upon consummation of the Issuer's initial public offering. The number of shares of common stock received upon conversion of the Existing Junior Convertible Preferred Stock was based on the aggregate liquidation preference of such stock divided by the initial public offering price of $14.00 per share.

F2 · derivative.exercise_date: Existing Junior Convertible Preferred Stock automatically converted into common stock of the Issuer upon consummation of the Issuer's initial public offering. The number of shares of common stock received upon conversion of the Existing Junior Convertible Preferred Stock was based on the aggregate liquidation preference of such stock divided by the initial public offering price of $14.00 per share.

F2 · derivative.expiration_date: Existing Junior Convertible Preferred Stock automatically converted into common stock of the Issuer upon consummation of the Issuer's initial public offering. The number of shares of common stock received upon conversion of the Existing Junior Convertible Preferred Stock was based on the aggregate liquidation preference of such stock divided by the initial public offering price of $14.00 per share.

SEC source: 0000899243-19-014603 · doc4.xml · nonDerivative · entry 2

Peacock Jonathan M · CIK 0001500241 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 142,001

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Existing Junior Convertible Preferred Stock automatically converted into common stock of the Issuer upon consummation of the Issuer's initial public offering. The number of shares of common stock received upon conversion of the Existing Junior Convertible Preferred Stock was based on the aggregate liquidation preference of such stock divided by the initial public offering price of $14.00 per share.

SEC source: 0000899243-19-014603 · doc4.xml · nonDerivative · entry 1

Peacock Jonathan M · CIK 0001500241 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,144

F1 · kind: Reflects a grant of restricted stock units that vests on May 21, 2020.

SEC source: 0000899243-19-014588 · doc4.xml · nonDerivative · entry 1

Szlosek Thomas A · CIK 0001293167 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 185,714

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014578 · doc4.xml · nonDerivative · entry 1

SACHDEV RAKESH · CIK 0001259543 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,286

F1 · kind: Reflects a grant of restricted stock units that vests on May 21, 2020.

SEC source: 0000899243-19-014597 · doc4.xml · nonDerivative · entry 1

Shaw Christi · CIK 0001702473 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,286

F1 · kind: Reflects a grant of restricted stock units that vests on May 21, 2020.

SEC source: 0000899243-19-014610 · doc4.xml · nonDerivative · entry 1

Miller Justin · CIK 0001776122 · EVP, Gen. Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 128,571

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014598 · doc4.xml · nonDerivative · entry 1

Ohri Devashish · CIK 0001776125 · EVP, AMEA

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,143

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014596 · doc4.xml · nonDerivative · entry 1

Walker Corey · CIK 0001776172 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 227,623

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014592 · doc4.xml · nonDerivative · entry 1

Brophy Gerard · CIK 0001776107 · EVP, Biopharma Production

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,143

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014594 · doc4.xml · nonDerivative · entry 1

Vanderhaegen Frederic · CIK 0001776162 · EVP, Europe

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,143

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

SEC source: 0000899243-19-014586 · doc4.xml · nonDerivative · entry 1

Stubblefield Michael · CIK 0001776153 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,034,150

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% shall vest on May 21, 2021, and (b) the remaining 50% shall vest in two equal annual installments beginning on May 21, 2022.