| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| BARBOUR D. SCOTT | President & Chief Executive Officer, Director | C/O ADVANCED DRAINAGE SYSTEMS, INC., 4640 TRUEMAN BOULEVARD, HILLIARD | /s/ D. Scott Barbour, by Scott A. Cottrill as attorney-in-fact | 13 Nov 2025 | 0001716232 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WMS | Common Stock | Options Exercise | $2.06M | +80K | +186.69% | $25.75 | 123K | 12 Nov 2025 | Direct | |
| transaction | WMS | Common Stock | Sale | -$672K | -4.54K | -3.69% | $148.01 | 118K | 12 Nov 2025 | Direct | F1 |
| transaction | WMS | Common Stock | Sale | -$10.9M | -73.5K | -62.07% | $148.96 | 44.9K | 12 Nov 2025 | Direct | F2 |
| transaction | WMS | Common Stock | Sale | -$306K | -2.03K | -4.52% | $150.66 | 42.9K | 12 Nov 2025 | Direct | F3 |
| holding | WMS | Common Stock | 69.5K | 12 Nov 2025 | Reporting Person's Revocable Trust | F4 | |||||
| holding | WMS | Common Stock | 98.8K | 12 Nov 2025 | Reporting Person's Irrevocable Trust | F5 | |||||
| holding | WMS | Common Stock | 6.5K | 12 Nov 2025 | Spouse's Revocable Trust | F6 | |||||
| holding | WMS | Common Stock | 69K | 12 Nov 2025 | Spouse's Irrevocable Trust | F7 | |||||
| holding | WMS | Common Stock | 25.1K | 12 Nov 2025 | Reporting Person's 2023 GRAT | F8 | |||||
| holding | WMS | Common Stock | 26.4K | 12 Nov 2025 | Reporting Person's 2024 GRAT | F8 | |||||
| holding | WMS | Common Stock | 17K | 12 Nov 2025 | By KSOP | F9 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WMS | Option to Purchase Common Stock | Options Exercise | $0 | -80K | -100% | $0.00 | 0 | 12 Nov 2025 | Common Stock | 80K | $25.75 | Direct | F10 |
| Id | Content |
|---|---|
| F1 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $148.00 to $148.9999, 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. |
| F2 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $149.54 to $150.5399, 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. |
| F3 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $150.61 to $151.6099, 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. |
| F4 | Shares held in revocable trust for the benefit of the reporting person. |
| F5 | Shares held in irrevocable spousal access trust established by the reporting person, of which the reporting person's spouse is a co-trustee. The beneficiaries of the irrevocable trust are the reporting person and his children. |
| F6 | Shares held in revocable trust for the benefit of the reporting person's spouse. |
| F7 | Shares held in irrevocable spousal access trust established by the reporting person's spouse, of which the reporting person is a co-trustee. The beneficiaries of the irerrevocable trust include the reporting person's spouse and his children. |
| F8 | Shares held in GRATs of which the reporting person is trustee. |
| F9 | Represents current allocation under KSOP. |
| F10 | The options vested in three equal annual installments beginning on May 23, 2019. |
President & Chief Executive Officer