Arthur W. Homan, Chief Legal Officer at Prothena Corp plc (PRTA), bought 2,000 shares at $19.12 ($38K) on 2014-08-07, disclosed to the SEC on 2014-08-07.
Open-market purchase of $38k PRTA by Chief Legal Officer. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.
| Filing → |
| PRTA | BUY | 2026-10-09 | $1.8M | — | Filing → |
| PRTA | BUY | 2026-10-06 | $857K | — | Filing → |
| PRTA | BUY | 2026-09-30 | $1.4M | — | Filing → |