Investor Presentaiton

Segment Revenue by End Markets for Full Year FY18 Reported Segments FY18 Revenue FYY18 Op Margin FY18/FY17 Revenue - GAAP Growth End Market Distribution of Full Year FY18 Revenue Industrial (Automotive) Fiber Optic & Wireless Comm. Military Semi Cap Life Science, Consumer, Other Laser Solutions ** $406M 67% 9.5% 28% 12% 3%* 7% 11% (1%) Photonics ** $487M 13.5% 10% 13% 77% 0% 3% 7% Performance Products 15% $266M 11.6% 24% 13% 40%* 19% 13% (2%) II-VI Consolidated 33% $1,159M 11.7% 19% 39% 10% 8% 10% (1%) * Now managed in Performance Products as of Q4FY18 IIVI ** The Laser Solutions and Photonics' results adjusted for the LSG move from Laser Solutions to Photonics Page 21

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