ADVANCED DRAINAGE SYSTEMS, INC.

Property -We have a network of 64 manufacturing plant locations and 41 distribution centers, summarized in the following table:

(1)Manufacturing plants and distribution centers in Mexico are owned or leased by our joint venture.

(2)Manufacturing plants and distribution centers owned or leased by our South America joint venture are not consolidated.

(3)The other facility is located in the Netherlands.

We currently own approximately 110,000 square feet in Hilliard, Ohio for our corporate headquarters through a joint venture and own our approximately 110,000 square foot ADS Engineering and Technology Center. Additionally, we lease an office space in Old Saybrook, Connecticut for our Infiltrator headquarters.

Our network of 64 manufacturing plants consists of 45 that are owned and 19 that are leased. We generally prefer to own our manufacturing plant locations, with a typical pipe manufacturing facility consisting of approximately 40,000 square feet and 15 to 20 acres of land for storage of pipe and related products. Our network of 41 distribution centers consists of 4 owned and 37 leased locations. We believe that our properties have been adequately maintained and are generally in good condition. The extent to which we use our properties varies by property, but we believe the capacity of our facilities is adequate for the level of production and distribution activities necessary in our business as presently conducted. Our Wastewater Segment utilizes 10 of our properties in the United States. The remainder of our properties are utilized by the Stormwater segment. Each distribution center carries pipe, fittings and other Allied Products per needs of the local market.

In-House Fleet -As of March 31, 2026, our in-house fleet consists of approximately 600 tractors and approximately 1,100 trailers that are specially designed to haul our lightweight pipe and fittings products.