Financial Metrics and Projections

SEGMENT REVENUE BY END MARKETS FOR Q3FY23 QTD Reported Segments Q3FY22 Q3FY23 Revenue (1) Revenue Q3FY23/ Q3FY22 Revenue Growth Q3FY23 Op Margin - GAAP / Non- Industrial GAAP End Market Distribution of Q3FY23 QTD Revenue Communications Electronics Instrumentation Materials Segment $268M $324M 21% 21% / 28% 48% 5% 42% 4% Networking $560M $551M (2)% 9% / 14% 3% 95% 1% 2% Segment Lasers $370M(2) $365M Segment (1)% (14)% / 15% 72% 0% 0% 28% Proforma Combined (3) $1,198M(1) $1,240M 4% 5% / 18% 35% 43% 11% 10% (1) Proforma non-GAAP revenue combines II-VI Q3 FY22 revenue (as of 3/31/22) and Coherent 3 months ending 3/31/22. Not calculated in accordance with Article 11 of SEC regulation S-X. (2) Coherent revenue 3 months ending 3/31/22. (3) Amounts may not recalculate due to rounding. COHERENT Copyright 2023, Coherent. All rights reserved. 34 =4

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