Form 4: Prothena Corp Public Ltd Executive Reports Stock Transaction
Insider Transaction (Form 4)
Karin L Walker, Chief Accounting Officer of Prothena Corp Public Ltd Co, reported multiple transactions in common stock on July 28, 2026.
Summary
- Option exercise/conversion: acquired 15,000 Ordinary Shares, par value $0.01 per share on July 28, 2026; holds 25,000 after (Direct).
- Disposition to the issuer: disposed of 15,000 Ordinary Shares, par value $0.01 per share at $8.56 ($128,400) on July 28, 2026; holds 10,000 after (Direct).
- Option exercise/conversion: disposed of 15,000 Restricted Stock Units on July 28, 2026 (Direct).
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as routine: the reported changes are grants, option exercises, tax withholding or similar administrative transactions, which carry limited directional signal.
Insider Transactions
Karin L Walker — Officer (Chief Accounting Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-07-28 | Option exercise/conversion | Ordinary Shares, par value $0.01 per share | 15,000 | — | — | 25,000 |
| 2026-07-28 | Disposition to the issuer | Ordinary Shares, par value $0.01 per share | 15,000 | $9 | $128.4K | 10,000 |
| 2026-07-28 | Option exercise/conversion | Restricted Stock Units | 15,000 | — | — | 0 |
Key Dates
| Date | Description |
|---|---|
| 2026-07-28 | Option exercise/conversion (15,000 shares) |
| 2026-07-28 | Disposition to the issuer (15,000 shares) |
| 2026-07-28 | Option exercise/conversion (15,000 shares) |
Keywords
insider transaction, Form 4, PRTA, PROTHENA CORP PUBLIC LTD CO, neutral, Karin L Walker
Disclaimer:The information provided here is for general informational purposes only and does not constitute financial advice, recommendation, or endorsement of any kind. It may contain errors or omissions. You should not rely on this information to make financial decisions. Always seek the advice of a qualified financial professional before making any investment or financial decisions. Use of this information is at your own risk.