X0306 4 2018-06-18 0 0000820318 II-VI INC IIVI 0001624339 Wagner David G C/O II-VI INCORPORATED 375 SAXONBURG BOULEVARD SAXONBURG PA 16056 0 1 0 0 VP, Human Resources Common Stock 2018-06-18 4 F 0 3739 46.55 D 45063 D Common Stock 500 I By Father These shares were withheld by the Company to discharge withholding tax obligations of the reporting person and do not constitute an actual sale or other open market transaction. The reporting person disclaims beneficial ownership of these securities, other than to the extent of the reporting persons's pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose. /s/ Jeffrey W. Acre, Attorney-in-Fact 2018-06-19