X0306 4 2021-11-08 0 0001604028 ADVANCED DRAINAGE SYSTEMS, INC. WMS 0001682214 TALLEY KEVIN C C/O ADVANCED DRAINAGE SYSTEMS, INC. 4640 TRUEMAN BOULEVARD HILLIARD OH 43026 0 1 0 0 EVP and CAO Common Stock 2021-11-08 4 M 0 60000 13.64 A 92373 D Common Stock 2021-11-08 4 S 0 5700 125.2884 D 86673 D Common Stock 2021-11-08 4 S 0 13577 126.2231 D 73096 D Common Stock 2021-11-08 4 S 0 16700 127.1864 D 56396 D Common Stock 2021-11-08 4 S 0 13780 128.4336 D 42616 D Common Stock 2021-11-08 4 S 0 10243 129.0216 D 32373 D Option to Purchase Common Stock 13.64 2021-11-08 4 M 0 60000 0.00 D 2023-03-31 Common Stock 60000 46972 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.72 to $125.515, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $125.715 to $126.67, 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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.72 to $127.70, 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 (3) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.75 to $128.70, 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 (4) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.74 to $129.38, 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 (5) to this Form 4. The option vested in five equal annual installments beginning on September 1, 2014. /s/ Kevin C. Talley, by Scott A. Cottrill as attorney-in-fact 2021-11-10