PRTA insider trades & Congress trades
Prothena Corp Public Ltd Co: public insider filings and Congress disclosures, in one place.
Bourse has recorded 4 open-market insider transactions in Prothena Corp Public Ltd Co (PRTA) (4 purchases with code P and 0 sales with code S), the most recent on October 14, 2026.
In the last 90 days: 4 purchases by 1 insider ($2.74M) and 0 sales by 0 ($0).
Insider transactions
SEC Form 4, open-market purchases (P) and sales (S) only. Awards, option exercises and tax withholding are excluded. “After” shows the stock’s return over the month following the trade, where available.
| Date | Insider | Role | Type | Shares | Price | Value | After 1M |
|---|---|---|---|---|---|---|---|
| Oct 14, 2026 | Scully William P | – | Buy | 10,000 | $8.46 | $85K | – |
| Oct 13, 2026 | Scully William P | – | Buy | 100,000 | $8.35 | $835K | – |
| Oct 8, 2026 | Scully William P | – | Buy | 90,000 | $8.57 | $771K | – |
| Oct 7, 2026 | Scully William P | – | Buy | 125,000 | $8.40 | $1.05M | – |
Data as of October 22, 2026. Public filings only. A purchase or sale by a politician or an insider does not by itself imply any wrongdoing.
New to these filings? Read how to read a Form 4, how Congress trades are disclosed and what insider cluster buying means. Sources and limits are on the Methodology page.
See these filings as they land
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