| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| VAN NOSTRAND ROBERT L | Director | C/O SELLAS LIFE SCIENCES GROUP, INC.,, 7 TIMES SQUARE, SUITE 2503, NEW YORK | /s/ Daniel Bagliebter, Power of Attorney For: Robert L. Van Nostrand | 2025-06-13 | 0001225198 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SLS | Common Stock | Purchase | $14.8K | +10K | +96.15% | $1.48 | 20.4K | Jun 12, 2025 | Direct |