Investor Presentaiton

RF Electronics for Wireless Infrastructure & Military ■ II-VI's GaAs & SiC on 6" platform + Finisar's microelectronics design expertise = Access to larger & growing markets ■ Collaboration with SEDI for GaN/SiC RF electronics ■ For wireless & military: efficient, high power RF amplification with GaN/SiC HEMT ☐ Thin-film diamond on silicon for next generation high speed wireless electronics SiC Substrates GaAs Epiwafers GaAs pHEMT 5G WIRELESS For 4G & 5G Wireless Antennas For RF Devices in Wireless Handsets For RF Applications in Military & Wireless A world leading supplier of SiC substrates GaN/SiC for RF Electronics Market CAGR ('18-'22): 26% Source: Yole II-VI Beam-forming Antenna 4G WIRELESS Remote Radio Head Page 12

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