| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Guo Jian | Chief Financial Officer, Director | 6185 KIMBALL STREET, CHINO | /s/ Jian Guo | 14 Nov 2025 | 0001907145 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | KRT | Common Stock | Purchase | $30.1K | +1.36K | +4.58% | $22.11 | 31.1K | 12 Nov 2025 | Direct | |
| holding | KRT | Common Stock | 500 | 12 Nov 2025 | By Spouse |