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Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation. Its product pipeline includes Prasinezumab, an investigational humanized monoclonal antibody which is in Phase 3 clinical trial for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in Phase 3 clinical trial for the treatment of transthyretin amyloidosis; BMS-986446, an anti-tau antibody which is in Phase 2 clinical trial to treat Alzheimer's disease; PRX019, an investigational antibody which is in Phase 1 clinical trial for the treatment of neurodegenerative diseases; and PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer's disease. In addition, it develops discovery- and late-preclinical-stage programs include TDP-43 CYTOPE for the treatment of amyotrophic lateral sclerosis; PRX012, a next-generation anti-Aß antibody which is in phase 1 clinical trial to treat Alzheimer's disease; and PRX012-TfR, a preclinical program for the treatment of Alzheimer's disease. It has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and master collaboration agreement with Bristol Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. Prothena Corporation plc was incorporated in 2012 and is based in Dublin, Ireland.
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FAQ
What is Prothena stock price today?▼
The current price of PRTA is $9.53 USD — it has decreased by -3.05% in the past 24 hours. Watch Prothena stock price performance more closely on the chart.
What is Prothena stock ticker?▼
Depending on the exchange, the stock ticker may vary. For instance, on exchange Prothena stocks are traded under the ticker PRTA.
Is Prothena stock price growing?▼
PRTA stock has risen by +4.74% compared to the previous week, the month change is a -11.63% fall, over the last year Prothena has showed a +44.38% increase.
What is Prothena market cap?▼
Today Prothena has the market capitalization of 513.03M
When is the next Prothena earnings date?▼
Prothena is going to release the next earnings report on August 10, 2026.
What were Prothena earnings last quarter?▼
PRTA earnings for the last quarter are 0.6 USD per share, whereas the estimation was -0.35 USD resulting in a +272.25% surprise. The estimated earnings for the next quarter are N/A USD per share.
What is Prothena revenue for the last year?▼
Prothena revenue for the last year amounts to 19.37M USD.
What is Prothena net income for the last year?▼
PRTA net income for the last year is -488.18M USD.
How many employees does Prothena have?▼
As of May 26, 2026, the company has 163 employees.
In which sector is Prothena located?▼
Prothena operates in the Health & Wellness sector.
When did Prothena complete a stock split?▼
Prothena has not had any recent stock splits.
Where is Prothena headquartered?▼
Prothena is headquartered in Dublin, Ireland.