X0306 4 2020-11-10 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 2020-11-10 4 M 0 4159 27.99 A 10958 D Common Stock 2020-11-10 4 M 0 3907 27.44 A 14865 D Common Stock 2020-11-10 4 S 0 8066 63.5429 D 6799 D Option to Purchase Common Stock 27.99 2020-11-10 4 M 0 4159 0.00 D 2028-10-14 Common Stock 4159 2079 D Option to Purchase Common Stock 27.44 2020-11-10 4 M 0 3907 0.00 D 2029-05-21 Common Stock 3907 7812 D Reflects the exercise by the Reporting Person of stock options (right to buy) previously granted by the Issuer. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.05 to $63.99, 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 (2) to this Form 4. The options vest in three equal annual installments beginning on October 14, 2019, provided that the Reporting Person remains continuously employed by the Issuer through each applicable vesting date. The options vest in three equal annual installments beginning on May 21, 2020, provided that the Reporting Person remains continuously employed by the Issuer through each applicable vesting date. /s/ Darin S. Harvey, by Scott A. Cottrill as attorney-in-fact 2020-11-12