| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Sohn Catherine A. | Director | 910 CLOPPER ROAD, SUITE 201S, GAITHERSBURG | /s/ Gregory Weaver, as Attorney-in-Fact | 05 Jan 2026 | 0001555132 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ALT | Common Stock, par value $0.0001 | Purchase | $2,118 | +500 | +50% | $4.24 | 1,500 | 05 Jan 2026 | Direct |