UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ━━━━━━━━━ FORM 10-Q ━━━━━━━━━ ____________________________ Title of each class Trading Symbol(s) Name of each exchange on which registered Common stock, $0.01 par value AVTR New York Stock Exchange 6.250% Series A Mandatory Convertible Preferred Stock, $0.01 par value AVTR PRA New York Stock Exchange ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 202 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ━━━━━━━━━ FORM 10-Q ━━━━━━━━━ ____________________________ Title of each class Trading Symbol(s) Name of each exchange on which registered Common stock, $0.01 par value AVTR New York Stock Exchange 6.250% Series A Mandatory Convertible Preferred Stock, $0.01 par value AVTR PRA New York Stock Exchange ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 ☐ T ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission file number: 001-38912 Avantor, Inc. (Exact name of registrant as specified in its charter) Delaware 82-2758923 (State or other jurisdic ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Title of each class Trading symbol Exchange on which registered Common Stock, $0.01 par value AVTR New York Stock Exchange 6.250% Series A Mandatory Convertible Preferred Stock, $0.01 par value AVTR PRA New York Stock Exchange FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EX ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, $0.01 par value AVTR New York Stock Exchange 6.250% Series A Mandatory Convertible Preferred Stock, $0.01 par value AVTR PRA New York Stock Exchange FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 1 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission file number: 001-38912 Avantor, Inc. (Exact name of registrant as specified in its charter) Delaware 82-2758923 (State or other jurisdict ...