| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Cottrill Scott A | EVP, CFO AND SECRETARY | C/O ADVANCED DRAINAGE SYSTEMS, INC., 4640 TRUEMAN BOULEVARD, HILLIARD | /s/ Scott A. Cottrill | 21 May 2025 | 0001343378 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WMS | Common Stock | Award | $0 | +2,802 | +2.9% | $0.000000 | 100,572 | 19 May 2025 | Direct | |
| transaction | WMS | Common Stock | Tax liability | $55,934 | -459 | -0.46% | $121.86 | 100,113 | 19 May 2025 | Direct | F1 |
| transaction | WMS | Common Stock | Tax liability | $40,845 | -345 | -0.34% | $118.39 | 99,768 | 20 May 2025 | Direct | F1 |
| holding | WMS | Common Stock | 17,469 | 19 May 2025 | By KSOP | F2 |
| 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 | Award | $0 | +5,975 | $0.000000 | 5,975 | 19 May 2025 | Common Stock | 5,975 | $119.30 | Direct | F3 |
| 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. |
| F3 | 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. |