II-VI INCORPORATED as Company and the Guarantors party hereto 5.000% Senior Notes due 2029 INDENTURE Dated as of December 10, 2021 U.S. BANK NATIONAL ASSOCIATION, as TrusteeIi-Vi Inc • December 10th, 2021 • Optical instruments & lenses • New York
Company FiledDecember 10th, 2021 Industry JurisdictionINDENTURE, dated as of December 10, 2021, as amended or supplemented from time to time (this “Indenture”), among II-VI INCORPORATED, a corporation organized under the laws of the Commonwealth of Pennsylvania (the “Company”), the Guarantors (as defined herein) from time to time party hereto and U.S. BANK NATIONAL ASSOCIATION, as trustee (in such capacity, the “Trustee”).