Avantor, Inc. (NYSE:AVTR) Q3 2019 Earnings Conference Call November 5, 2019 8:30 AM ET Company Participants Helen O'Donnell - Investor Relations Michael Stubblefield - President and Chief Executive Officer Tom Szlosek - Executive Vice President and Chief Financial Officer Conference Call Participants Tycho Peterson - JPMorgan Derik De Bruin - Bank of America Jack Meehan - Barclays Vijay Kumar - Evercore ISI Brandon Couillard - Jefferies Doug Schenkel - Cowen Dan Brennan - UBS Erin Wright - Credit Suisse Ope ...

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 ...