Prothena Corp Public Ltd Co (PRTA): 4 insider purchases in the last two years.
| Filed | Insider | Shares | Price | Value | Type |
|---|---|---|---|---|---|
| Jun 12, 2026 | Scully William P TenPercentOwner | 125,000 | $8.17 | $1.0M | no history |
| Jun 5, 2026 | Scully William P TenPercentOwner | 50,000 | $9.31 | $465.3K | no history |
| Jun 3, 2026 | Scully William P TenPercentOwner | 50,000 | $9.43 | $471.3K | no history |
| May 2, 2025 | Scully William P TenPercentOwner | 207,436 | $13.26 | $2.8M | no history |
Open-market purchases from SEC Form 4. "Opportunistic" = this insider trades every year but not on a fixed schedule (Cohen, Malloy & Pomorski); "routine" buys carry little information.
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