Company · CIK 0001559053 · SIC 2834 — Pharmaceutical Preparations · Nasdaq
PROTHENA CORP PUBLIC LTD CO · PRTA
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 18, 2026 PForm 4 → | Sep 21, 4:23 pm EDT | William P Scully10% Owner | 100,000 | $8.43 | $843,460 | 927,000 | +12.1% | |
| Sep 2, 2026 PForm 4 → | Sep 3, 6:23 pm EDT | William P Scully10% Owner | 27,000 | $9.47 | $255,739 | 827,000 | +3.38% | |
| Aug 20, 2026 PForm 4 → | Aug 21, 2:32 pm EDT | William P Scully10% Owner | 50,000 | $8.79 | $439,430 | 800,000 | +6.67% | |
| Aug 17, 2026 GForm 4 → | Aug 18, 4:03 pm EDT | William P Scully10% Owner | 963,553 | — | — | 750,000 | — | |
| Aug 10, 2026 GForm 4 → | Aug 11, 4:08 pm EDT | William P Scully10% Owner | 251,553 | — | — | 1,041,553 | — | |
| Aug 7, 2026 PForm 4 → | Aug 10, 3:24 pm EDT | William P Scully10% Owner | 37,500 | $8.62 | $323,220 | 83,500 | +81.5% | |
| Jul 29, 2026 SForm 4 → | Jul 30, 8:31 pm EDT | Anne Evans KingstonChief Strategy Officer | 7,662 | $8.47 | $64,919 | 55,782 | −12.1% | 10b5-1 |
| Jul 29, 2026 SForm 4 → | Jul 30, 8:30 pm EDT | Michael John IsaacsGeneral Counsel & Company Sec. | 8,386 | $8.47 | $71,055 | 35,745 | −19.0% | 10b5-1 |
| Jul 28, 2026 DMForm 4 → | Jul 30, 8:34 pm EDT | Wagner M. ZagoChief Scientific Officer | 102,000 | $8.56 | $436,560 | 34,000 | — | |
| Jul 28, 2026 DMForm 4 → | Jul 30, 8:34 pm EDT | Karin L WalkerChief Accounting Officer | 30,000 | $8.56 | $128,400 | 10,000 | — | |
| Jul 28, 2026 DFMForm 4 → | Jul 30, 8:33 pm EDT | Chad J. SwansonChief Development Officer | 95,267 | $8.56 | $378,926 | 40,733 | — | |
| Jul 28, 2026 DMForm 4 → | Jul 30, 8:33 pm EDT | Brandon S. SmithChief Operating Officer | 156,000 | $8.56 | $667,680 | 52,000 | — | |
| Jul 28, 2026 DMForm 4 → | Jul 30, 8:32 pm EDT | Tran NguyenChief Strategy Officer and CFO | 114,000 | $8.56 | $487,920 | 40,205 | — | |
| Jul 28, 2026 DMForm 4 → | Jul 30, 8:31 pm EDT | Gene G. KinneyPresident and CEO, Director | 168,000 | $8.56 | $719,040 | 68,793 | — | |
| Jul 28, 2026 FForm 4 → | Jul 30, 8:31 pm EDT | Anne Evans KingstonChief Strategy Officer | 3,498 | $8.56 | $29,943 | 63,444 | — | 10b5-1 |
| Jul 28, 2026 FForm 4 → | Jul 30, 8:30 pm EDT | Michael John IsaacsGeneral Counsel & Company Sec. | 4,694 | $8.56 | $40,181 | 44,131 | — | 10b5-1 |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jul 28, 2026 MForm 4 → | Jul 30, 8:34 pm EDT | Wagner M. ZagoChief Scientific Officer | 51,000 | — | — | 0 | — | |
| Jul 28, 2026 MForm 4 → | Jul 30, 8:34 pm EDT | Karin L WalkerChief Accounting Officer | 15,000 | — | — | 0 | — | |
| Jul 28, 2026 MForm 4 → | Jul 30, 8:33 pm EDT | Chad J. SwansonChief Development Officer | 51,000 | — | — | 0 | — | |
| Jul 28, 2026 MForm 4 → | Jul 30, 8:33 pm EDT | Brandon S. SmithChief Operating Officer | 78,000 | — | — | 0 | — | |
| Jul 28, 2026 MForm 4 → | Jul 30, 8:32 pm EDT | Tran NguyenChief Strategy Officer and CFO | 57,000 | — | — | 0 | — | |
| Jul 28, 2026 MForm 4 → | Jul 30, 8:31 pm EDT | Gene G. KinneyPresident and CEO, Director | 84,000 | — | — | 0 | — |