|
Market Closed -
Nasdaq
21:00:00 28/08/2026 BST
|
5-day change | 1st Jan Change | ||
| 9.330 USD | +2.64% |
|
-1.27% | -2.30% |
| Market Cap | 479M 413M 387M 353M 665M 45.78B 668M 4.59B 1.79B 23.11B 1.8B 1.76B 76.62B | P/E 2026 * |
84.8x | P/E 2027 * | -10x |
|---|---|---|---|---|---|
| Enterprise Value | 479M 413M 387M 353M 665M 45.78B 668M 4.59B 1.79B 23.11B 1.8B 1.76B 76.62B | EV / Sales 2026 * |
5.76x | EV / Sales 2027 * | 19.7x |
| Free-Float |
78.36% | Yield 2026 * |
-
| Yield 2027 * | - |
Last Transcript : Prothena Corporation plc
| 1 day | +2.64% | ||
| 1 week | -1.27% | ||
| Current month | +14.90% | ||
| 1 month | +9.00% | ||
| 3 months | -6.51% | ||
| 6 months | +7.61% | ||
| Current year | -2.30% |
| 1 week | 8.95 |  | 9.82 |
| 1 month | 8 | | 9.82 |
| Current year | 7.73 | | 11.8 |
| 1 year | 7.73 | | 11.8 |
| 3 years | 4.32 | | 56.27 |
| 5 years | 4.32 | | 79.75 |
| 10 years | 4.32 | | 79.75 |
| Manager | Title | Age | Since |
|---|---|---|---|
Gene Kinney
CEO | Chief Executive Officer | 57 | 29/09/2016 |
Tran Nguyen
DFI | Director of Finance/CFO | 52 | 31/03/2013 |
Brandon Smith
COO | Chief Operating Officer | 52 | 28/09/2021 |
| Director | Title | Age | Since |
|---|---|---|---|
Lars Ekman
CHM | Chairman | 76 | 19/12/2012 |
Richard Collier
BRD | Director/Board Member | 72 | 19/12/2012 |
Shane Cooke
BRD | Director/Board Member | 63 | 19/12/2012 |
| Date | Insider | Type | Main position | Quantity | % Market Cap. | |
|---|---|---|---|---|---|---|
| 20/08/26 | Buy | 50,000 | 0.0955% | |||
| 18/08/26 | Don | -627,553 | 1.1987% | |||
| 10/08/26 | Don | 251,553 | 0.4805% |
| Change | 5-day change | 1-year change | 3-year change | Capi.($) | ||
|---|---|---|---|---|---|---|
 | +2.64% | -1.27% | +13.23% | -83.13% | 479M | |
| -1.59% | -3.35% | +64.49% | +98.69% | 69.54B | |
| -1.34% | -0.75% | +48.56% | +90.63% | 64.97B | |
| -8.37% | -12.43% | +0.14% | -15.42% | 25.64B | |
| -2.35% | -5.75% | -12.17% | +448.29% | 25.89B | |
| +0.30% | -0.69% | +63.18% | +11.93% | 26.51B | |
| -0.96% | +10.36% | +278.86% | +438.78% | 20.22B | |
| -0.51% | +0.23% | +33.71% | -18.02% | 19.98B | |
| -1.91% | -4.37% | +13.33% | +531.29% | 15.69B | |
| -1.47% | +0.68% | +43.67% | +145.49% | 13.49B | |
| Average | -1.56% | -1.86% | +54.70% | +164.85% | 28.24B | |
| Weighted average by Cap. | -1.92% | -1.50% | +57.08% | +152.42% |
| 2026 * | 2027 * | |
|---|---|---|
| Net sales | 83.16M 71.65M 67.18M 61.33M 116M 7.95B 116M 797M 311M 4.01B 312M 305M 13.3B | 24.38M 21M 19.69M 17.98M 33.87M 2.33B 33.97M 234M 91.16M 1.18B 91.52M 89.52M 3.9B |
| Net income | 6.22M 5.36M 5.03M 4.59M 8.65M 595M 8.68M 59.66M 23.28M 300M 23.37M 22.86M 996M | -49.57M -42.72M -40.05M -36.56M -68.88M -4.74B -69.1M -475M -185M -2.39B -186M -182M -7.93B |
| Net Debt | - | - |
| Date | Price | Change | Volume |
|---|---|---|---|
| 28/08/26 | US$9.330 | +2.64% | 498,115 |
| 27/08/26 | US$9.090 | -1.73% | 338,921 |
| 26/08/26 | US$9.250 | -1.80% | 289,040 |
| 25/08/26 | US$9.420 | +0.32% | 363,713 |
| 24/08/26 | US$9.390 | -0.63% | 248,124 |
Trader
This super rating is the result of a weighted average of the rankings based on the following ratings: Valuation (Composite), EPS Revisions (4 months), and Visibility (Composite). We recommend that you carefully review the associated descriptions.
Investor
This super composite rating is the result of a weighted average of the rankings based on the following ratings: Fundamentals (Composite), Valuation (Composite), EPS Revisions (1 year), and Visibility (Composite). We recommend that you carefully review the associated descriptions.
Global
This composite rating is the result of an average of the rankings based on the following ratings: Fundamentals (Composite), Valuation (Composite), Financial Estimates Revisions (Composite), Consensus (Composite) and Visibility (Composite). The company must be covered by at least 4 of these 5 ratings for the calculation to be carried out. We recommend that you carefully review the associated descriptions.
Quality
This composite rating is the result of an average of rankings based on the following ratings: Returns (Composite), Profitability (Composite) and Quality of Financial Reporting (Composite), and Financial Health (Composite). The company must be covered by at least 2 of these 3 ratings for the calculation to be performed. We recommend that you carefully read the associated descriptions.
ESG MSCI
The MSCI ESG score assesses a company’s environmental, social, and governance practices relative to its industry peers. Companies are rated from CCC (laggard) to AAA (leader). This rating helps investors incorporate sustainability risks and opportunities into their investment decisions.
Quarterly revenue - Rate of surprise
- Stock Market
- Stocks
- PRTA Stock
Select your edition
All financial news and data tailored to specific country editions
