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Ticker
PRTA

Price
8.96
Stock movement up
+- (0.00%)
Company name
Prothena Corporation plc
Exchange
(NASDAQ
,
Currency
USD
)
Sector
Healthcare >
Biotechnology
Market cap
482.32M
Ent value
221.12M
Price/Sales
49.81
Price/Book
1.72
Div yield
-
Div growth
-
Growth years
-
FCF payout
-
Trailing P/E
-
Forward P/E
-
PEG
-
EPS growth
10.24%
1 year return (CAGR)
-35.49%
3 year return (CAGR)
-45.34%
5 year return (CAGR)
-10.24%
10 year return (CAGR)
-11.87%
Last updated: 2026-03-13

iO Charts is a Seeking Alpha partner

iO Charts is a Seeking Alpha partner

DIVIDENDS

PRTA does not pay dividends or no data was received

iO Charts is a Seeking Alpha partner

iO Charts is a Seeking Alpha partner

VALUATION

Valuation Ratios

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Valuation Ratios data
Trailing P/E-
Price to OCF-
Price to FCF-
Price to EBITDA-
EV to EBITDA-

Valuation (Sales/Book Value)

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Valuation (Sales/Book Value) data
Price to Sales49.81
Price to Book1.72
EV to Sales22.83

iO Charts is a Seeking Alpha partner

iO Charts is a Seeking Alpha partner

FINANCIALS

Per share

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Per share data
Current share count53.83M
EPS (TTM)-4.53
FCF per share (TTM)-3.11

Income statement

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Income statement data
Revenue (TTM)9.68M
Gross profit (TTM)-20.20M
Operating income (TTM)-217.65M
Net income (TTM)-244.09M
EPS (TTM)-4.53
EPS (1y forward)-1.00

Margins

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Margins data
Gross margin (TTM)-208.55%
Operating margin (TTM)-2247.50%
Profit margin (TTM)-2520.57%

Balance Sheet

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Balance Sheet data
Cash307.53M
Net receivables0.00
Total current assets315.19M
Goodwill0.00
Intangible assets0.00
Property, plant and equipment0.00
Total assets326.80M
Accounts payable0.00
Short/Current long term debt5.49M
Total current liabilities40.84M
Total liabilities46.33M
Shareholder's equity280.47M
Net tangible assets0.00

Cash flow

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Cash flow data
Operating cash flow (TTM)-167.43M
Capital expenditures (TTM)142.94K
Free cash flow (TTM)-167.57M
Dividends paid (TTM)0.00

Financial returns

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Financial returns data
Return on Equity-87.03%
Return on Assets-74.69%
Return on Invested Capital-87.03%
Cash Return on Invested Capital-59.75%

STOCK INFORMATION

Stock chart

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Stock price data
Open8.96
Daily high9.21
Daily low8.79
Daily Volume375K
All-time high78.89
1y analyst estimate20.50
Beta-0.28
EPS (TTM)-4.53
Dividend per share0.00
Ex-div date-
Next earnings date13 May 2026

Downside potential

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Downside potential data
PRTAS&P500
Current price drop from All-time high-88.64%-1.82%
Highest price drop-94.19%-56.47%
Date of highest drop27 May 20259 Mar 2009
Avg drop from high-51.51%-10.84%
Avg time to new high41 days12 days
Max time to new high1456 days1805 days

iO Charts is a Seeking Alpha partner

iO Charts is a Seeking Alpha partner

COMPANY DETAILS
PRTA (Prothena Corporation plc) company logo
Marketcap
482.32M
Marketcap category
Small-cap
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 in the United States. Its product pipeline include Prasinezumab, an investigational humanized monoclonal antibody which is in phase 2b clinical trial, as well as phase 1 and 2 clinical trials for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in phase 2 clinical trial for potential treatment of transthyretin amyloidosis; BMS-986446, an investigational antibody, which is in phase 2 clinical trial to treat Alzheimer's disease; PRX012, an investigational antibody, which is in phase 1 clinical trial to treat Alzheimer's disease; PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer's disease; and PRX019, an investigational antibody, which is in phase 1 clinical trial for the potential treatment of neurodegenerative diseases. 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 a-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.
Employees
163
Investor relations
-
SEC filings
CEO
Gene G. Kinney
Country
USA
City
Dun Laoghaire
Stock type
Common stock
CCC status
-
Dividend Frequency
-
EVENTS AND PRESENTATIONS
EventsPresentations
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UNDERSTAND THE BUSINESS
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