| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MAKOWSKI TIM A | Vice President, Controller and Chief Accounting Officer | C/O ADVANCED DRAINAGE SYSTEMS, INC., 4640 TRUEMAN BOULEVARD, HILLIARD | /s/ Tim A. Makowski, by Scott A. Cottrill as attorney-in-fact | 2025-05-16 | 0001672236 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WMS | Common Stock | Award | $0 | +3.08K | +67.99% | $0.00 | 7.61K | May 14, 2025 | Direct | F1 |
| transaction | WMS | Common Stock | Tax liability | -$112K | -921 | -12.1% | $121.68 | 6.69K | May 14, 2025 | Direct | F2 |
| transaction | WMS | Common Stock | Tax liability | -$1.7K | -14 | -0.21% | $121.68 | 6.68K | May 14, 2025 | Direct | F2 |
| holding | WMS | Common Stock | 17.6K | May 14, 2025 | By KSOP | F3 |
| Id | Content |
|---|---|
| F1 | Reflects grant of performance-based units, originally granted pursuant to the Issuer's 2017 Omnibus Incentive Plan, earned after the Issuer determined that certain performance goals for the performance period ended March 31, 2025 had been met. Total includes dividend equivalents in the amount of 46 shares, which dividend equivalents are settled in common stock. |
| F2 | Represents shares withheld to satisfy Reporting Person's tax obligations in connection with the vesting of shares of restricted common stock of the Issuer. |
| F3 | Represents current allocation under KSOP. |
Vice President, Controller and Chief Accounting Officer