Avantor Results Presentation Deck

Adjusted share count for 2022 (Millions of shares) 580 Nominal Share Count at IPO 62.9 Assumed MCPS conversion avantor™ 642.7 Adjusted share count used since IPO 23.8 Masterflex equity 18.5 Employee equity (2019-2022E) 685 Adjusted share count for 2022 Adjusted share count (685M) converges with expected US GAAP share count by year-end 2022, will be eliminated beginning in 2023 9

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