X0306 4 2022-08-12 0 0001604028 ADVANCED DRAINAGE SYSTEMS, INC. WMS 0001756972 HARVEY DARIN S. C/O ADVANCED DRAINAGE SYSTEMS, INC. 4640 TRUEMAN BOULEVARD HILLIARD OH 43026 0 1 0 0 EVP, Supply Chain & Logistics Common Stock 2022-08-12 4 M 0 2079 27.99 A 6679 D Common Stock 2022-08-12 4 M 0 3906 27.44 A 10585 D Common Stock 2022-08-12 4 S 0 5985 147.9817 D 4600 D Common Stock 15242.1914 I By KSOP Option to Purchase Common Stock 27.99 2022-08-12 4 M 0 2079 0.00 D 2028-10-14 Common Stock 2079 0 D Option to Purchase Common Stock 27.44 2022-08-12 4 M 0 3906 0.00 D 2029-05-21 Common Stock 3906 0 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $147.72 to $148.27, inclusive. The reporting person undertakes to provide to Advanced Drainage Systems, Inc., any security holder of Advanced Drainage Systems, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4. Represents current allocation under KSOP. The options vested in three equal annual installments beginning on October 14, 2019. The options vested in three equal annual installments beginning on May 21, 2020. /s/ Darin S. Harvey, by Scott A. Cottrill as attorney-in-fact 2022-08-16