AVTR

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 23

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,623,882.41

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 22

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 21

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,182.41

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 20

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 19

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,624,228.41

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 18

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 17

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,621,850.41

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 30

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 29

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,630,004.41

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 28

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 27

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,625,246.41

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 26

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 25

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,182.41

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 24

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 23

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,623,882.41

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 22

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 21

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,182.41

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 20

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 19

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,624,228.41

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 18

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,620,082.41

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 17

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,621,850.41

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 30

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: 72,620,082.41

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 29

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: 72,630,004.41

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 28

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: 72,620,082.41

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 27

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: 72,625,246.41

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 26

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: 72,620,082.41

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 25

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: 72,620,182.41

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 24

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: 72,620,082.41

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 23

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: 72,623,882.41

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 22

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: 72,620,082.41

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 21

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: 72,620,182.41

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 20

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: 72,620,082.41

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 19

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: 72,624,228.41

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 18

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: 72,620,082.41

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 17

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: 72,621,850.41

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: 0001722482-19-000020 · wf-form4_156935691937480.xml · nonDerivative · entry 1

Andres Juan · CIK 0001760670 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

F1 · kind: Reflects a grant of restricted stock units that vests on September 20, 2020.

SEC source: 0000899243-21-018646 · doc4.xml · nonDerivative · entry 16

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,623,876.99

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 15

Natauri Jo · CIK 0001776123 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,773,570.99

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 16

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,623,876.99

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 15

Connolly Thomas · CIK 0001776597 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 72,773,570.99

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 16

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: 72,623,876.99

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 15

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: 72,773,570.99

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 14

Natauri Jo · CIK 0001776123 · Director

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: 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 13

Natauri Jo · CIK 0001776123 · Director

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: 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 12

Natauri Jo · CIK 0001776123 · Director

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: 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 11

Natauri Jo · CIK 0001776123 · Director

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: 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 14

Connolly Thomas · CIK 0001776597 · Director

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 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 13

Connolly Thomas · CIK 0001776597 · Director

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 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 12

Connolly Thomas · CIK 0001776597 · Director

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 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 11

Connolly Thomas · CIK 0001776597 · Director

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 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.