Type	Name	Date
Credit agreement	First Amendment to Credit Agreement, by and among KMG Chemicals, Inc. and the other Borrower Parties referred to therein, as Borrowers, and KeyBank National Association, as Administrative Agent	12/19/2017
Credit agreement	Credit Agreement, by and among KMG Chemicals, Inc., as the Borrower, the Lenders referred to therein, as Lenders, KeyBank National Association, as Agent, Swingline Lender and Issuing Lender, KeyBanc Capital Markets Inc., HSBC Securities (USA) Inc., and JPMorgan Chase Bank, N.A., as Joint Lead Arrangers and Joint Bookrunners, and ING Capital LLC, as Documentation Agent	06/15/2017
Credit agreement	Fifth Amendment to Amended and Restated Credit Agreement	06/03/2013
Credit agreement	Fourth Amendment to Amended and Restated Credit Agreement	04/29/2013
Credit agreement	Second Amendment to Amended and Restated Credit Agreement	11/23/2011
Credit agreement	Second Amendment to Amended and Restated Credit Agreement	03/30/2010

Type	Name	Date
Employment agreement	Employment Agreement with Mr. Fraser	09/26/2013

Type	Name	Date
Merger agreement	Agreement and Plan of Merger, by and among KMG Chemicals, Inc., Cabot Microelectronics Corporation and Cobalt Merger Sub Corporation	08/17/2018
Acquisition / asset purchase agreement	Asset Purchase Agreement between the company, KMG-Bernuth, Inc. and Koppers Inc	01/20/2015

Type	Name	Date
Other	Letter Agreement with Mr. Butler	07/17/2013