PRTA Prothena Corporation plc
NASDAQActiveOrdinary shares
PRTA is the ticker symbol of Prothena Corporation plc (ordinary shares), which is listed on NASDAQ.
PRTA at a glance
- Symbol
- PRTA
- Company / issuer
- Prothena Corporation plc
- Security type
- Ordinary shares
- Exchange
- NASDAQ
- Status
- Actively traded
- Seen in listing files
- Jan 2015 – present
- Sector
- Health Care
- Industry
- Biotechnology: Pharmaceutical Preparations
- Country
- United States
- Market cap
- $427.1 million (Sep 2026)
Prothena Corporation plc company profile
- Industry (SIC)
- Pharmaceutical Preparations
- Headquarters
- Dublin 2, Ireland
- Incorporated in
- L2
- Fiscal year end
- December 31
- SEC filer category
- Accelerated filer
- Latest annual report
- 10-K filed 2026-02-27
- Latest interim report
- 10-Q filed 2026-08-06
- SEC CIK
- 1559053
Former company names
- Neotope Corp Ltd (until 2012)
Source: SEC EDGAR filer data.
PRTA price chart
Interactive chart provided by TradingView (loads third-party scripts).
Frequently asked questions
What company has the ticker symbol PRTA?
PRTA is the ticker symbol of Prothena Corporation plc on NASDAQ.
Is PRTA still trading?
Yes. PRTA appears in the current NASDAQ listings as of Sep 2026.
Which exchange is PRTA listed on?
PRTA is listed on NASDAQ.
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