UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ━━━━━━━━━ FORM 10-Q ━━━━━━━━━ For the quarterly period ended March 31, 2025 ☐ 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) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Delaware 82-2758923 (Sta ...