Prothena Corporation plc - Ordinary Shares (NQ:PRTA)

10.73 -0.34 (-3.07%)

Streaming Delayed Price Updated: 4:00 PM EST, Dec 8, 2025 Add to My Watchlist

Price and Volume

Volume	561,849
Open	11.20
Bid (Size)	10.73 (1,100)
Ask (Size)	10.75 (200)
Prev. Close	11.07
Today's Range	10.71 - 11.30
52wk Range	4.320 - 17.66
Shares Outstanding	45,047,449
Dividend Yield	N/A

Intraday 1 Week 1 Month 3 Month 1 Year 3 Year 5 Year

Top News

More News

Prothena Announces Poster Presentation on its TDP-43 CYTOPE® Program at Neuroscience 2025

November 19, 2025

From Prothena Corporation plc

Via Business Wire

Novo Nordisk's $100 Million Coramitug Shows Promise In Reducing Heart Failure Biomarker ↗

November 12, 2025

Novo Nordisk's Coramitug cut NT-proBNP levels and was well tolerated in a Phase 2 ATTR-CM trial, paving the way for its Phase 3 CLEOPATTRA study.

Via Benzinga

Performance

YTD	-21.5%	-21.5%
1 Month	+1.6%	+1.6%
3 Month	+26.4%	+26.4%
6 Month	+104.4%	+104.4%
1 Year	-25.3%	-25.3%

More News

Prothena Highlights Phase 2 Data for Coramitug (Formerly PRX004) Published in Circulation, Official Journal of AHA

November 11, 2025

From Prothena Corporation plc

Via Business Wire

Earnings Scheduled For November 6, 2025 ↗

November 06, 2025

Via Benzinga

9 Analysts Assess Prothena Corp: What You Need To Know ↗

August 05, 2025

Via Benzinga

Earnings Scheduled For August 4, 2025 ↗

August 04, 2025

Via Benzinga

A Glimpse of Prothena Corp's Earnings Potential ↗

August 01, 2025

Via Benzinga

Prothena Corp PLC (NASDAQ:PRTA) Reports Q3 2025 Earnings and Key Pipeline Milestones ↗

November 06, 2025

Via Chartmill

Prothena Reports Third Quarter 2025 Financial Results and Business Highlights

November 06, 2025

From Prothena Corporation plc

Via Business Wire

Prothena to Report Third Quarter 2025 Financial Results on November 6

October 30, 2025

From Prothena Corporation plc

Via Business Wire

Deep Dive Into Prothena Corp Stock: Analyst Perspectives (7 Ratings) ↗

October 07, 2025

Via Benzinga

Prothena’s Partner Bristol Myers Squibb Obtains Fast Track Designation from the U.S. FDA for BMS-986446 (PRX005), an Anti-MTBR-Tau-Targeting Antibody, for the Treatment of Alzheimer’s Disease

October 01, 2025

From Prothena Corporation plc

Via Business Wire

Alibaba To Rally More Than 12%? Here Are 10 Top Analyst Forecasts For Tuesday ↗

September 02, 2025

Via Benzinga

FDA Tightens Safety Guidelines For Biogen Leqembi Alzheimer's Therapy ↗

August 29, 2025

Via Benzinga

Prothena to Participate in the Cantor Fitzgerald Global Healthcare Conference

August 28, 2025

From Prothena Corporation plc

Via Business Wire

Prothena Reports Non-Competitive Brain Swelling Rates In Early Alzheimer's Study ↗

August 28, 2025

Via Benzinga

What 4 Analyst Ratings Have To Say About Prothena Corp ↗

August 28, 2025

Via Benzinga

Prothena Provides Update on PRX012 and Announces Results from the Phase 1 ASCENT Clinical Program

August 27, 2025

From Prothena Corporation plc

Via Business Wire

Novo Nordisk Commits To Advancing Prothena Corp-Developed Drug Into Late Stage Trial: Retail Turns Hopeful ↗

August 06, 2025

Via Stocktwits

Prothena Announces that Novo Nordisk Will Advance Coramitug (Formerly PRX004) into Phase 3 Development for ATTR Amyloidosis with Cardiomyopathy

August 06, 2025

From Prothena Corporation plc

Via Business Wire

Prothena Q2 Revenue Drops 97% ↗

August 05, 2025

Via The Motley Fool

Prothena Reports Second Quarter 2025 Financial Results and Business Highlights

August 04, 2025

From Prothena Corporation plc

Via Business Wire

Prothena to Report Second Quarter 2025 Financial Results on August 4

July 28, 2025

From Prothena Corporation plc

Via Business Wire

8 Analysts Assess Prothena Corp: What You Need To Know ↗

June 20, 2025

Via Benzinga

Prothena Shares Get A Boost After Company Slashes Workforce, Lowers 2025 Cash Burn Forecast ↗

June 20, 2025

Via Stocktwits

Frequently Asked Questions

Is Prothena Corporation plc - Ordinary Shares publicly traded?

Yes, Prothena Corporation plc - Ordinary Shares is publicly traded.

What exchange does Prothena Corporation plc - Ordinary Shares trade on?

Prothena Corporation plc - Ordinary Shares trades on the Nasdaq Stock Market

What is the ticker symbol for Prothena Corporation plc - Ordinary Shares?

The ticker symbol for Prothena Corporation plc - Ordinary Shares is PRTA on the Nasdaq Stock Market

What is the current price of Prothena Corporation plc - Ordinary Shares?

The current price of Prothena Corporation plc - Ordinary Shares is 10.73

When was Prothena Corporation plc - Ordinary Shares last traded?

The last trade of Prothena Corporation plc - Ordinary Shares was at 12/08/25 04:00 PM ET

What is the market capitalization of Prothena Corporation plc - Ordinary Shares?

The market capitalization of Prothena Corporation plc - Ordinary Shares is 483.36M

How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?

Prothena Corporation plc - Ordinary Shares has 483M shares outstanding.

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