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Prothena Stock Price, News & Analysis

PRTA Nasdaq

Welcome to our dedicated page for Prothena news (Ticker: PRTA), a resource for investors and traders seeking the latest updates and insights on Prothena stock.

Prothena Corporation Plc (PRTA) is a clinical-stage biotechnology company advancing novel antibody therapies for complex diseases involving protein misfolding. This news hub provides investors and researchers with timely updates on clinical trials, regulatory milestones, and strategic partnerships shaping the company's trajectory in amyloidosis, neurodegenerative disorders, and inflammatory disease research.

Access authoritative reporting on PRTA's pipeline developments, including detailed coverage of Phase 1-3 trial outcomes, FDA interactions, and collaborative research initiatives. Our curated news collection enables stakeholders to track progress across therapeutic areas where Prothena specializes: targeting pathogenic proteins in Alzheimer's disease, Parkinson's disease, and rare amyloidosis conditions.

Key updates include earnings announcements, scientific conference presentations, intellectual property developments, and partnership expansions. Bookmark this page for structured access to press releases, peer-reviewed publication highlights, and expert analyses of Prothena's innovative immunotherapies.

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Prothena Corporation plc (NASDAQ:PRTA) will announce its fourth quarter and full year 2021 financial results on February 17, 2022, after U.S. market close. The announcement will be followed by a live audio conference call at 4:30 PM ET, accessible via the company's website. Prothena is a biotech firm focused on therapeutics for neurodegenerative and rare diseases, leveraging expertise in protein dysregulation. Their pipeline includes candidates for AL amyloidosis, ATTR amyloidosis, Alzheimer's, and Parkinson's diseases.

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DUBLIN, Ireland, Nov. 29, 2021 – Prothena Corporation plc (NASDAQ:PRTA), a late-stage clinical biotechnology company, announced its senior management will participate in a fireside chat at the JMP Securities Hematology and Oncology Summit on December 6, 2021, at 1:20 PM ET. A live webcast will be accessible on Prothena's investor relations site, with a replay available for at least 90 days post-event. Prothena focuses on investigational therapeutics targeting rare peripheral amyloid and neurodegenerative diseases, leveraging its expertise in protein dysregulation.

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Prothena Corporation reported strong financial results for Q3 and the first nine months of 2021, achieving a net income of $109.2 million for Q3 compared to a loss of $30.6 million in Q3 2020. Total revenue reached $139.2 million, including $78.5 million from Bristol Myers Squibb and $60.7 million from Novo Nordisk. The company has $601.5 million in cash and no debt. Prothena continues to advance its pipeline, including the ongoing Phase 3 trial of birtamimab and collaborations with notable partners, positioning itself for further growth.

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Prothena Corporation plc (NASDAQ:PRTA) will release its third quarter and first nine months of 2021 financial results on November 4, 2021, after U.S. market close. The company, focused on novel therapies for conditions related to protein dysregulation, will not hold a conference call following the release. Prothena continues to advance its pipeline targeting diseases such as AL amyloidosis, ATTR amyloidosis, Alzheimer's, and Parkinson's. This detailed focus on neurological dysfunction and misfolded proteins positions Prothena as a key player in addressing rare and neurodegenerative diseases.

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Prothena Corporation plc (NASDAQ:PRTA) announced the hiring of two new employees, granting them options to purchase a total of 140,000 ordinary shares at an exercise price of $70.74. This price reflects the closing trading price on October 1, 2021. The options will vest over four years, with 25% vesting after one year and the remaining vesting monthly over the following three years. This grant is part of Prothena's 2020 Employment Inducement Incentive Plan, approved by the board under Nasdaq guidelines.

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Prothena Corporation (NASDAQ:PRTA) announced key executive changes aimed at bolstering its transition to a fully integrated biotechnology company targeting rare diseases. Tran B. Nguyen has been appointed Chief Strategy Officer while continuing his role as Chief Financial Officer. Brandon Smith steps in as Chief Operating Officer. These roles focus on enhancing Prothena's long-term growth strategy, operational capabilities, and pipeline development, aiding in its mission to commercialize novel therapeutics for conditions like AL amyloidosis and Alzheimer’s disease.

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Prothena Corporation plc (NASDAQ:PRTA) announced the approval of a stock option grant to a new employee, allowing the purchase of 75,000 ordinary shares at an exercise price of $69.88. This is based on the closing trading price from September 1, 2021. The option will vest over four years, with 25% vesting after one year and the remainder vesting monthly over the following three years. This grant aligns with Prothena's 2020 Employment Inducement Incentive Plan.

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Prothena Corporation plc (NASDAQ:PRTA) announced participation in key investor conferences in September 2021, showcasing its commitment to addressing neurodegenerative diseases. Key events include Citi’s 16th Annual BioPharma Virtual Conference on September 8, featuring a fireside chat at 9:45 AM ET and a panel discussion at 11:35 AM ET. Additionally, the company will present at H.C. Wainwright's 23rd Annual Global Investment Conference on September 13 and the Cantor Global Healthcare Conference on September 27. Webcasts of these events will be available live and subsequently for 90 days on Prothena's website.

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Prothena Corporation (NASDAQ:PRTA) reported a net income of $27.6 million for Q2 2021, a significant improvement from a net loss of $26.3 million in the same quarter last year. Revenue for Q2 reached $60.1 million, up from $0.2 million in Q2 2020, primarily driven by collaboration payments. The company announced multiple strategic collaborations, achieving over $200 million in milestone payments in 2021. Prothena anticipates a strong cash position of approximately $491 million by year-end, up from prior guidance of $316 million. Upcoming milestones include key clinical data presentations.

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DUBLIN, Ireland, July 29, 2021 – Prothena Corporation plc (NASDAQ:PRTA) will release its second quarter and first half of 2021 financial results on August 5, 2021, after U.S. market close. The company, known for its investigational therapeutics targeting protein dysregulation associated with rare peripheral amyloid and neurodegenerative diseases, will not hold a conference call for this release. Prothena aims to advance its pipeline, which includes treatments for AL amyloidosis, ATTR amyloidosis, Alzheimer's, and Parkinson's diseases.

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FAQ

What is the current stock price of Prothena (PRTA)?

The current stock price of Prothena (PRTA) is $8.52 as of August 20, 2025.

What is the market cap of Prothena (PRTA)?

The market cap of Prothena (PRTA) is approximately 459.2M.
Prothena

Nasdaq:PRTA

PRTA Rankings

PRTA Stock Data

459.17M
43.21M
18.66%
79.74%
8.13%
Biotechnology
Pharmaceutical Preparations
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Ireland
DUBLIN 2