Type	Name	Date
Indenture	Second Supplemental Indenture, between ATI Inc. and Computershare Trust Company, N.A., as trustee	08/11/2023
Indenture	Indenture, between Allegheny Technologies Incorporated and Wells Fargo Bank, National Association, as trustee	09/14/2021
Indenture	First Supplemental Indenture, between Allegheny Technologies Incorporated and Wells Fargo Bank, National Association, as trustee	09/14/2021
Underwriting agreement	Underwriting Agreement, by and among Allegheny Technologies Incorporated and Citigroup Global Markets Inc. and J.P. Morgan Securities LLC, as representatives of the underwriters named therein	05/19/2016
Underwriting agreement	Underwriting Agreement, by and among Allegheny Technologies Incorporated and Citigroup Global Markets Inc. and J.P. Morgan Securities LLC, as representatives of the underwriters named therein	05/19/2016
Securities purchase agreement	Purchase Agreement, by and among TDY Industries, LLC, Kennametal Inc., Cuttech Limited and ATI Holdings SAS	09/18/2013
Credit agreement	Sixth Amendment to Credit Agreement, by and among ATI Funding Corporation, TDY Holdings, LLC, the guarantors party thereto, the lenders party thereto and PNC Bank, National Association, as Administrative Agent for the lenders	06/07/2013
Credit agreement	Second Amendment to Credit Agreement, by and among ATI Funding Corporation, TDY Holdings, LLC, the Guarantors party thereto, the Lenders party thereto and PNC Bank, National Association, as Administrative Agent for the lenders	12/29/2010
Credit agreement	First Amendment to Credit Agreement, by and among ATI Funding Corporation, TDY Holdings, LLC, the guarantors party thereto, the lenders party thereto and PNC Bank, National Association, as administrative agent for the lenders	06/03/2009
Indenture	Indenture, between Allegheny Technologies Incorporated and The Bank of New York Mellon, as Trustee	06/03/2009
Indenture	First Supplemental Indenture, between Allegheny Technologies Incorporated and The Bank of New York Mellon, as Trustee	06/03/2009
Indenture	Second Supplemental Indenture, between Allegheny Technologies Incorporated and The Bank of New York Mellon, as Trustee	06/03/2009