NASDAQ: PRTAProthena Corp Public Ltd Co Stock Ownership - Who owns Prothena Public Co?
Insider buying vs selling
Have Prothena Corp Public Ltd Co insiders been buying or selling?
Buy
Sell
| Name | Role | Date | Shares | Price | Value |
|---|---|---|---|---|---|
| William P. Scully | 10% Owner | 2026-10-14 | 10,000 | $8.46 | $84.57kBuy |
| William P. Scully | 10% Owner | 2026-10-13 | 100,000 | $8.36 | $835.50kBuy |
| William P. Scully | 10% Owner | 2026-10-08 | 90,000 | $8.57 | $770.94kBuy |
| William P. Scully | 10% Owner | 2026-10-07 | 125,000 | $8.40 | $1.05MBuy |
| William P. Scully | 10% Owner | 2026-10-02 | 100,000 | $8.57 | $857.20kBuy |
| William P. Scully | 10% Owner | 2026-09-29 | 162,000 | $8.68 | $1.41MBuy |
| William P. Scully | 10% Owner | 2026-09-28 | 103,500 | $8.60 | $889.89kBuy |
| William P. Scully | 10% Owner | 2026-09-18 | 100,000 | $8.44 | $843.50kBuy |
| William P. Scully | 10% Owner | 2026-09-02 | 27,000 | $9.47 | $255.74kBuy |
| William P. Scully | 10% Owner | 2026-08-20 | 50,000 | $8.79 | $439.45kBuy |
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Net Insider Buy/Sell (L12M) Ownership
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PRTA Shareholders
What type of owners hold Prothena Corp Public Ltd Co stock?
Institutional
Insider
Retail
| Name | Hold | Shares | Value | Type |
|---|---|---|---|---|
| Ecor1 Capital LLC | 55.46% | 28,473,156 | $234.90M | Insider |
| Oleg Nodelman | 18.36% | 9,426,640 | $77.77M | Insider |
| Elan Corp PLC | 6.20% | 3,182,253 | $26.25M | Insider |
| William P. Scully | 3.80% | 1,953,000 | $16.11M | Insider |
| Michael J. Malecek | 0.16% | 80,000 | $660.00k | Insider |
| Gene G. Kinney | 0.13% | 68,793 | $567.54k | Insider |
| Anne Evans Kingston | 0.11% | 55,782 | $460.20k | Insider |
| Brandon S. Smith | 0.10% | 52,000 | $429.00k | Insider |
| Chad J. Swanson | 0.08% | 40,733 | $336.05k | Insider |
| Tran Nguyen | 0.08% | 40,205 | $331.69k | Insider |
PRTA vs Biotech Stocks
Prothena Public Co Stock Ownership FAQ
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Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.