| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Lange Douglas A. | VP - WATER TREATMENT GROUP | 2381 ROSEGATE, ROSEVILLE | /s/ Joshua L. Colburn, Attorney-in-Fact | 16 May 2025 | 0001816092 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | HWKN | Common Stock | Award | $0 | +3,553 | +14% | $0.000000 | 28,792 | 14 May 2025 | Direct | |
| holding | HWKN | Common Stock | 686 | 14 May 2025 | By ESOP Trustee | ||||||
| holding | HWKN | Common Stock | 941 | 14 May 2025 | By IRA |