Avantor Investor Conference Presentation Deck

Reconciliations of GAAP to non-GAAP measures ($M) Net sales growth (GAAP) Foreign currency impact Sales from acquired companies Organic net sales growth (non-GAAP) Navantor™ Full Year 2019 $176.0 (123.3) $299.3 3.0% (2.1)% 5.1% Full Year 2020 $353.3 16.5 $336.8 5.8% 0.2% 5.6% Full Year 2021 $992.5 130.3 143.0 $719.2 15.5% 2.0% 2.2% 11.3% 9 months ended 9/30/2022 $238.9 (230.5) 254.2 $215.2 4.4% (4.1)% 4.6% 3.9% 41st Annual J.P. Morgan Healthcare Conference 18

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