| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Olson Eric K. | President and CEO, Director | 1885 WEST 2100 SOUTH, SALT LAKE CITY, | /S/Kevin Ontiveros, by power of attorney | 25 Aug 2025 | 0001598504 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SINT | Common Stock | Purchase | $11,795 | +3,500 | +24% | $3.37 | 18,000 | 22 Aug 2025 | Direct | |
| transaction | SINT | Common Stock | Purchase | $18,450 | +5,000 | +28% | $3.69 | 23,000 | 22 Aug 2025 | Direct | |
| transaction | SINT | Common Stock | Purchase | $2,821 | +775 | +3.4% | $3.64 | 23,775 | 22 Aug 2025 | Direct | |
| transaction | SINT | Common Stock | Purchase | $4,404 | +1,200 | +5% | $3.67 | 24,975 | 22 Aug 2025 | Direct |