Type	Name	Date
Credit agreement	Second Amendment to Credit Agreement, by and among the Advanced Drainage Systems, Inc., the banks and other financial institutions or entities parties thereto, constituting the Required Lenders under the Credit Agreement and all the Revolving Lenders under the Credit Agreement, the Issuing Lenders party thereto, Barclays Bank PLC, as administrative agent under the Term Loan Facility and PNC Bank, National Association, as administrative agent under the Revolving Facility	05/27/2022
Credit agreement	First Amendment to Credit Agreement, by and among the Advanced Drainage Systems, Inc., the banks and other financial institutions or entities parties thereto, constituting all the Lenders under the Credit Agreement, the Issuing Lenders party thereto and Barclays Bank PLC, as administrative agent	09/30/2019
Indenture	Indenture, among Advanced Drainage Systems, Inc., each of the guarantors party thereto and U.S. Bank National Association, as trustee	09/23/2019
Credit agreement	Credit Agreement, by and among Advanced Drainage Systems, Inc., Barclays Bank PLC, as administrative agent, the several lenders from time to time party thereto, Barclays Bank PLC and Morgan Stanley Senior Funding, Inc., as joint lead arrangers, joint bookrunners, syndication agents and documentation agents	08/01/2019
Credit agreement	Fourth Amendment to Amended and Restated Credit Agreement	02/22/2016
Credit agreement	Fifth Amendment to Second Amended and Restated Credit Agreement	02/22/2016
Credit agreement	Third Amendment to Amended and Restated Credit Agreement	12/31/2015
Credit agreement	Fourth Amendment to Second Amended and Restated Credit Agreement	12/31/2015
Credit agreement	Third Amendment to Second Amended and Restated Credit Agreement	12/04/2015
Credit agreement	Second Amendment to Amended and Restated Credit Agreement	08/26/2015
Credit agreement	Second Amendment to Second Amended and Restated Credit Agreement	08/26/2015
Registration rights agreement	Registration Rights Agreement, by and among Advanced Drainage Systems, Inc. and the stockholders from time to time party thereto	07/30/2014

Type	Name	Date
Employment agreement	Executive Employment Agreement	08/17/2017
Employment agreement	Executive Employment Agreement, by and between the Company and Scott A. Cottrill	11/09/2015