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Prothena Corporation plc logo

Prothena Corporation plc

PRTA
NASDAQ: PRTA Delayed
10.87USD -5.6%
As of 5 June 2026, Prothena Corporation plc has a market cap of $585.16M USD, ranking #14119 globally and #44 in Ireland. It ranks #1258 in the Healthcare sector, and #236 in the Biotechnology industry.
Global Rank
14119
Country Rank
44
Sector Rank
1258
Industry Rank
236
Key Stats
Market Cap
$585.16MUSD
Enterprise Value
$289.51MUSD
Revenue (TTM)
$9.68MUSD
EBITDA (TTM)
-$183.67MUSD
Net Income (TTM)
-$244.09MUSD
Forward PE
44.1
PS Ratio
60.8
PB Ratio
2.2
Company Profile
Country (HQ)
Sector
Healthcare
Industry
Biotechnology
CEO
Gene Kinney open_in_new
Employees
67
Founded
2012
Website
prothena.com open_in_new
warningChart data may be delayed
1d 1w 1m 3m 6m 1y
-5.6% 1.3% 17% 19% 3% 13%

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Markets

Exchange Ticker Price
NASDAQ
MIC: XNAS
PRIMARY
PRTA
Prothena Corp PLC
ISIN: IE00B91XRN20
Shares Out.:
52.353M1 Shares Float: 46.332M2
TV:
SA:
YF:
GF:
NQ:
BA:
MS:
10.87 USD
London Stock Exchange
MIC: XLON
0Y3M
Prothena Corp PLC
ISIN: IE00B91XRN20
TV:
SA:
YF:
GF:
BA:
MS:
11.20 USD
1Market cap is calculated using shares outstanding.
2Float shares are publicly tradable shares, excluding insider-held stock.

About Prothena Corporation plc

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.

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