Form4.ai tracks every SEC insider trade in real time. See every PRTA insider filing with a free account — no card.
See every PRTA insider filing — free account, no card.
Free accountPROTHENA CORP PUBLIC LTD CO (PRTA) has 12 SEC Form 4 insider filings on record in the last 90 days. That includes 10 insider purchases totalling $9.0M. Most recent filing: Oct. 29, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Oct 29, 2026 SEC filing | SCULLY WILLIAM P 10% Owner | Gift | — | — |
| Oct 26, 2026 SEC filing | SCULLY WILLIAM P 10% Owner | Bought | $1,222,045 | +4.0% 7D |
| Oct 15, 2026 SEC filing | SCULLY WILLIAM P 10% Owner | Bought | $920,049 | -4.0% 7D |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.