PROTHENA CORPORATION PUBLIC LIMITED COMPANY Subsidiaries
Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (14 lists). Names and jurisdictions are as filed.
- 2026-02-27: Subsidiary Prothena Biosciences Limited; Jurisdiction Ireland.
- 2026-02-27: Subsidiary Prothena Biosciences Inc; Jurisdiction Delaware.
- 2026-02-27: Subsidiary Prothena Finance Inc; Jurisdiction Delaware.
- 2026-02-27: Subsidiary Othair Prothena Limited; Jurisdiction Ireland.
| Annual report filed | Subsidiary | Jurisdiction |
|---|---|---|
| 2026-02-27 | Prothena Biosciences Limited | Ireland |
| 2026-02-27 | Prothena Biosciences Inc | Delaware |
| 2026-02-27 | Prothena Finance Inc | Delaware |
| 2026-02-27 | Othair Prothena Limited | Ireland |
| 2026-02-27 | Prothena Pharma Limited | Ireland |
| 2026-02-27 | Prothena Platform Technologies Limited | Ireland |
| 2025-02-27 | Prothena Biosciences Limited | Ireland |
| 2025-02-27 | Prothena Biosciences Inc | Delaware |
| 2025-02-27 | Prothena Finance Inc | Delaware |
| 2025-02-27 | Othair Prothena Limited | Ireland |
| 2025-02-27 | Prothena Pharma Limited | Ireland |
| 2025-02-27 | Prothena Platform Technologies Limited | Ireland |
| 2024-02-22 | Prothena Biosciences Limited | Ireland |
| 2024-02-22 | Prothena Biosciences Inc | Delaware |
| 2024-02-22 | Prothena Finance Inc | Delaware |
| 2024-02-22 | Othair Prothena Limited | Ireland |
| 2024-02-22 | Prothena Pharma Limited | Ireland |
| 2024-02-22 | Prothena Platform Technologies Limited | Ireland |
| 2023-02-28 | Prothena Biosciences Limited | Ireland |
| 2023-02-28 | Prothena Biosciences Inc | Delaware |
| 2023-02-28 | Prothena Finance Inc | Delaware |
| 2023-02-28 | Othair Prothena Limited | Ireland |
| 2023-02-28 | Prothena Pharma Limited | Ireland |
| 2023-02-28 | Prothena Platform Technologies Limited | Ireland |
| 2022-02-25 | Prothena Biosciences Limited | Ireland |
| 2022-02-25 | Prothena Biosciences Inc | Delaware |
| 2022-02-25 | Prothena Finance Inc | Delaware |
| 2022-02-25 | Othair Prothena Limited | Ireland |
| 2022-02-25 | Prothena Pharma Limited | Ireland |
| 2021-02-26 | Prothena Biosciences Limited | Ireland |
| 2021-02-26 | Prothena Biosciences Inc | Delaware |
| 2021-02-26 | Prothena Finance Inc | Delaware |
| 2021-02-26 | Neotope Neuroscience Limited | Ireland |
| 2021-02-26 | Othair Prothena Limited | Ireland |
| 2020-03-03 | Prothena Biosciences Limited | Ireland |
| 2020-03-03 | Prothena Biosciences Inc | Delaware |
| 2020-03-03 | Prothena Finance Inc | Delaware |
| 2020-03-03 | Neotope Neuroscience Limited | Ireland |
| 2019-03-15 | Prothena Biosciences Limited | Ireland |
| 2019-03-15 | Prothena Biosciences Inc | Delaware |
| 2018-02-26 | Prothena Biosciences Limited | Ireland |
| 2018-02-26 | Prothena Therapeutics Limited | Ireland |
| 2018-02-26 | Prothena International Limited | Ireland |
| 2018-02-26 | Prothena Biosciences Inc | Delaware |
| 2018-02-26 | Prothena Switzerland GmbH | Switzerland |
| 2017-02-27 | Prothena Biosciences Limited | Ireland |
| 2017-02-27 | Prothena Therapeutics Limited | Ireland |
| 2017-02-27 | Prothena Biosciences Inc | Delaware |
| 2017-02-27 | Prothena Switzerland GmbH | Switzerland |
| 2016-02-25 | Prothena Biosciences Limited | Ireland |
| 2016-02-25 | Prothena Therapeutics Limited | Ireland |
| 2016-02-25 | Prothena Biosciences Inc | Delaware |
| 2015-03-13 | Prothena Biosciences Limited (formerly Neotope Biosciences Limited) | Ireland |
| 2015-03-13 | Prothena Therapeutics Limited (formerly Onclave Therapeutics Limited) | Ireland |
| 2015-03-13 | Prothena Biosciences Inc | Delaware |
| 2014-03-07 | Neotope Biosciences Limited | Ireland |
| 2014-03-07 | Onclave Therapeutics Limited | Ireland |
| 2014-03-07 | Prothena Biosciences Inc. | Delaware |
| 2013-03-29 | Neotope Biosciences Limited | Ireland |
| 2013-03-29 | Onclave Therapeutics Limited | Ireland |
| 2013-03-29 | Prothena Biosciences Inc. | Delaware |
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