Reconciliation of GAAP Measures to Non-GAAP Measures

II-VI Q4 FY22 FINANCIAL HIGHLIGHTS(1) 5% 4% 1% 5% 7% Revenue Backlog Booking Revenue By End Market 12% $887M $1.0B $2.3B 66% 6% 5% Operating Income Earnings Per Share 17% $114.2M GAAP $0.23 GAAP $168.6M Non-GAAP $0.98 Non-GAAP 18% (1) II-VI standalone actuals as of June 30, 2022 (2) II-VI Incorporated revenue by region is based on customer headquarter address COHERENT Copyright 2022, Coherent. All rights reserved. 54% ■Communications ■ Industrial ■Consumer Electronics ■ Aerospace & Defense ■Life Sciences ■ Automotive & Other ■ North America Revenue By Region (2) Europe ■ China ■ Japan ■ Other 8

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