On September 30, 2021, Materion Corporation, entered into Amendment No. 1 to Third Amended and Restated Credit Agreement (the “Amendment”), which amended the Third Amended and Restated Credit Agreement dated as of September 24, 2019, by and among Materion, Materion’s subsidiary, Materion Netherlands B.V., Materion’s other foreign subsidiaries party thereto from time to time, the financial institutions party thereto from time to time as lenders, JPMorgan Chase Bank, N.A., as administrative agent, Wells Fargo Bank National Association and Bank of America, N.A., as co-syndication agents, and KeyBank National Association, as documentation agent. Among other things, the Amendment provides for an increase in the maximum leverage ratio covenant in connection with the proposed acquisition by Materion of all of the shares of H.C. Starck Inc. and permits the incurrence of certain debt in connection with such acquisition.