X0508 4 2025-05-19 0001604028 ADVANCED DRAINAGE SYSTEMS, INC. WMS 0001756972 HARVEY DARIN S. C/O ADVANCED DRAINAGE SYSTEMS, INC. 4640 TRUEMAN BOULEVARD HILLIARD OH 43026 false true false false EVP, Supply Chain & Logistics false Common Stock 2025-05-19 4 A false 1428 0 A 7843 D Common Stock 2025-05-19 4 F false 163 121.86 D 7680 D Common Stock 2025-05-20 4 F false 120 118.39 D 7560 D Common Stock 15232.7225 I By KSOP Option to Purchase Common Stock 119.3 2025-05-19 4 A false 3044 0 A 2035-05-20 Common Stock 3044 3044 D Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer. Represents current allocation under KSOP. The options vest in three equal annual installments beginning on May 19, 2026, 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 2025-05-21