| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Sun Kai | Chief Scientist, Director | 10TH FLOOR, BUILDING A, NO. 658 ZHAOHUA ROAD, CHANGNING DISTRICT, SHANGHAI, CHINA | /s/ Kai Sun | 18 Mar 2026 | 0001998340 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | HSAI | Class A ordinary shares | 9,228,622 | 18 Mar 2026 | By Fermat Star Limited |