| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| WAUN THOMAS J. SR. | EVP, International | C/O ADVANCED DRAINAGE SYSTEMS, INC., 4640 TRUEMAN BOULEVARD, HILLIARD | /s/ Thomas J. Waun, Sr., by Scott A. Cottrill as attorney-in-fact | 23 May 2025 | 0001815777 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WMS | Common Stock | Tax liability | -$17,982 | -162 | -1% | $111 | 15,845 | 22 May 2025 | Direct | F1 |
| holding | WMS | Common Stock | 2,063 | 22 May 2025 | By KSOP | F2 |
| Id | Content |
|---|---|
| F1 | Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer. |
| F2 | Represents current allocation under KSOP. |