| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Doraiswamy Vinayak | Chief Scientific Officer | 7555 INNOVATION WAY, MASON | /s/ Vinayak S. Doraiswamy | 07 Aug 2025 | 0001862458 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATRC | Common Stock | Sale | $91,450 | -2,500 | -3.4% | $36.58 | 71,872 | 05 Aug 2025 | Direct |