Type	Name	Date
Indenture	Second Supplemental Indenture, between AK Steel Corporation and U.S. Bank National Association	03/13/2020
Securities purchase agreement	Purchase Agreement	07/07/2017
Indenture	Indenture, among AK Steel Corporation, as issuer, the guarantors named therein and U.S. Bank National Association, as trustee and collateral agent	06/20/2016
Underwriting agreement	Underwriting Agreement, between AK Steel Holding Corporation and Credit Suisse Securities (USA) LLC, Citigroup Global Markets Inc. and Goldman, Sachs & Co., as representatives of the underwriters named therein	05/03/2016
Registration rights agreement	Registration Rights Agreement, among AK Steel Holding Corporation, AK Steel Corporation and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as the initial purchaser	06/24/2013
Indenture	Indenture, among AK Steel Corporation, as issuer, AK Steel Holding Corporation, as guarantor, and U.S. Bank National Association, as trustee and collateral agent	11/20/2012
Underwriting agreement	UNDERWRITING AGREEMENT	11/20/2012
Underwriting agreement	Underwriting Agreement, among AK Steel Corporation, AK Steel Holding Corporation and Credit Suisse Securities (USA) LLC and J.P. Morgan Securities LLC, as representatives of the underwriters named therein	11/20/2012
Credit agreement	First Amendment to Credit Agreement, among AK Steel Corporation, as borrower, Bank of America, N.A. as agent for the lenders, and the lenders party thereto	11/13/2012
Indenture	Second Supplemental Indenture, among AK Steel Corporation, as issuer, AK Steel Holding Corporation, as guarantor, and U.S. Bank National Association, as trustee	03/22/2012
Indenture	Indenture, among AK Steel Corporation, as issuer, AK Steel Holding Corporation, as guarantor, and U.S. Bank National Association, as trustee	05/11/2010