Financial Metrics and Projections

RECONCILIATION OF GAAP MEASURES TO NON-GAAP MEASURES COHERENT Reconciliation of GAAP Measures to non-GAAP Measures* $ Millions (Unaudited) Dec 31, 2022 Three Months Ended Sept 30, 2022 Dec 31, 2021 Six Months Ended Dec 31, Dec 31, 2022 2021 Gross profit on GAAP basis Share-based compensation $ 411.2 $ 443.6 $ 311.2 $ 854.8 $ 617.8 6.2 5.3 1.4 11.5 2.9 Amortization of acquired intangibles 15.3 47.4 9.7 62.7 19.3 Preliminary fair value adjustment on acquired inventory 112.0 45.5 - 157.5 Start-up costs(3) - - 1.2 - 1.2 Integration and other(1) 1.2 0.4 1.2 1.6 1.2 Gross profit on non-GAAP basis $545.9 $ 542.2 $ 324.8 $ 1,088.1 $ 642.4 Operating income on GAAP basis $ 8.2 $ 42.5 $ 98.2 $ 50.7 $ 193.3 Share-based compensation 34.9 53.2 18.7 88.1 41.4 Amortization of acquired intangibles 105.4 82.5 20.0 187.9 40.4 Preliminary fair value adjustment on acquired inventory 112.0 45.5 157.5 Start-up costs,(3) 11.3 11.3 Transaction fees and financing) 38.7 7.9 38.7 19.9 Integration and other(1) 17.2 24.1 3.1 41.3 3.2 Operating income on non-GAAP basis $ 277.8 $286.4 $ 159.2 $ 564.2 $ 309.6 Copyright 2023, Coherent. All rights reserved. 40 40

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