| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Lin Chen | Director | UNIVERSITY OF HONG KONG, K3, HONG KONG | /s/Chen Lin | 16 Mar 2026 | 0002118200 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | WDH | Class A ordinary shares | 220,000 | 16 Mar 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Represents 220,000 Class A ordinary shares of the Issuer issued upon the vesting of the underlying restricted share unit awards. These restricted share units were granted on March 25, 2025. These restricted share units have been fully vested as of the date hereof. |