Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
11.51
+0.72 (6.67%)
At close: Apr 28, 2026, 4:00 PM EDT
11.73
+0.22 (1.91%)
After-hours: Apr 28, 2026, 7:04 PM EDT

Company Description

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 Aβ-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-Aβ 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 α-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.

Prothena Corporation plc
Prothena Corporation logo
Country Ireland
Founded 2012
Industry Biotechnology
Sector Healthcare
Employees 67
CEO Gene Kinney

Contact Details

Address:
77 Sir John Rogerson’s Quay, Block C
Dublin, D02 VK60
Ireland
Phone 353 1 236 2500
Website prothena.com

Stock Details

Ticker Symbol PRTA
Exchange NASDAQ
Fiscal Year January - December
Reporting Currency USD
CIK Code 0001559053
CUSIP Number G72800108
ISIN Number IE00B91XRN20
SIC Code 2834

Key Executives

Name Position
Dr. Gene G. Kinney Ph.D. President, Chief Executive Officer and Director
Tran B. Nguyen M.B.A. Chief Financial Officer
Brandon S. Smith Chief Operating Officer
Dr. Wagner M. Zago Ph.D. Chief Scientific Officer
Dr. Chad H. Swanson Ph.D. Chief Development Officer
Karin L. Walker CPA Chief Accounting Officer and Controller
Mark C. Johnson C.F.A. Vice President of Investor Relations
Michael J. Malecek Chief Legal Officer and Company Secretary
Phillip Dolan Senior Director and Head of Exploratory Research
Annie Evans Kingston Chief Strategy Officer

Latest SEC Filings

Date Type Title
Mar 27, 2026 ARS Filing
Mar 27, 2026 DEFA14A Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Mar 27, 2026 DEF 14A Other definitive proxy statements
Mar 2, 2026 EFFECT Notice of Effectiveness
Feb 27, 2026 8-K Current Report
Feb 27, 2026 POS AM Post-Effective amendments for registration statement
Feb 27, 2026 10-K Annual Report
Feb 27, 2026 POSASR Filing
Feb 19, 2026 8-K Current Report
Feb 13, 2026 SCHEDULE 13G Filing