| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Smith Brandon S. | Chief Operating Officer | C/O PROTHENA BIOSCIENCES INC, 1800 SIERRA POINT PARKWAY, BRISBANE | /s/ Michael Malecek, as Attorney in Fact for Brandon S. Smith | 30 Jul 2025 | 0001805226 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | PRTA | Ordinary Shares, par value $0.01 per share | Award | $0 | +130,000 | $0.000000 | 130,000 | 28 Jul 2025 | Direct |