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Prothena Corporation plc (PRTA)

Profile

Full Name

Prothena Corporation plc

Ticker

NASDAQ: PRTA

Exchange

NASDAQ

Sector

Healthcare

Industry

Biotechnology

Country

Ireland

IPO

December 18, 2012

Indexes

Not included

Website

https://www.prothena.com

Employees

163

Key Details

Price

$8.21(-2.61%)

Market cap

$441.94M(Small cap)

Last Dividend

-

TTM Dividend yield

-

Annual revenue

$135.16M(+47.92% YoY)

Annual EPS

-$2.27(+17.75% YoY)

PE ratio

-

Next earnings date

Nov 10, 2025

Next ex-dividend date

N/A

Next split date

N/A

Quick Search

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    Analyst ratings

    Price

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    Current Price

    $8.21
    PRTA price is $8.21

    30-Day Relative Volume

    0.50
    PRTA 30-day relative volume is 0.50

    Price Performance

    Price Most recent change

    -2.61%
    PRTA price was down -2.61% on Sep 12, 2025

    Price YTD change

    -40.72%
    PRTA price is down -40.72% since January 1st

    Price 1-year change

    -60.38%
    PRTA price is down -60.38% year-on-year

    Price 3-year change

    -72.31%
    PRTA price is down -72.31% over the past 3 years

    Price Range

    Price All-time high

    $79.75
    PRTA price is currently -89.71% below its historical high of $79.75

    Price 3-year low

    $4.32
    PRTA price is currently +90.05% above its 3-year low

    Capitalization

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    Market cap

    Market cap

    $441.94M
    PRTA market capitalization is $441.94 million

    Market cap 3-year change

    -68.23%
    PRTA market capitalization is down -68.23% over the past 3 years

    Market cap All-time high

    $4.15B
    PRTA market capitalization is currently -89.34% below its historical high of $4.15 billion

    Market cap sector rank

    62.41%
    PRTA market capitalization is higher than 62.41% of companies in Healthcare sector

    Shares Outstanding

    Shares Outstanding 1-Year Change

    +0.09%
    PRTA shares outstanding is up +0.09% year-on-year

    Shares Outstanding 3-Year Change

    +14.72%
    PRTA shares outstanding is up +14.72% over the past 3 years

    Technical Indicators

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    Beta

    0.70
    PRTA beta is 0.70

    200-day SMA

    $10.40
    PRTA price is currently -21.03% below its 200-day simple moving average

    50-day SMA

    $7.49
    PRTA price is currently +9.61% above its 50-day simple moving average

    RSI

    53.06
    PRTA 14-day relative strength index is 53.06

    Volume

    0.50
    PRTA 30-day relative volume is 0.50

    ATR

    $0.36
    PRTA average true range is $0.36

    10-day Historical Volatility

    32.50%
    PRTA 10-day historical volatility is 32.50%

    Dividend

    Income Statement

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    Revenue

    Revenue

    $135.16M
    PRTA annual revenue is $135.16 million

    Revenue Analysts estimate

    $20.62M
    PRTA annual revenue is currently +555.46% higher than the consensus analysts' forecast

    Revenue 1-year change

    +47.92%
    PRTA annual revenue is up +47.92% year-on-year

    Revenue Sector rank

    70.58%
    PRTA annual revenue is higher than 70.58% of companies in Healthcare sector

    EPS

    EPS

    -$2.27
    PRTA annual earnings per share is -$2.27

    EPS Analysts estimate

    -$4.59
    PRTA annual earnings per share is currently -50.54% lower than the consensus analysts' forecast

    EPS 1-year change

    +17.75%
    PRTA annual earnings per share is up +17.75% year-on-year

    EPS Sector rank

    35.61%
    PRTA annual earnings per share is higher than 35.61% of companies in Healthcare sector

    Profit

    Gross profit

    $131.57M
    PRTA annual gross profit is $131.57 million

    Gross margin

    97.35%
    PRTA annual gross profit margin is 97.35%

    Operating profit

    -$154.56M
    PRTA annual operating income is -$154.56 million

    Operating margin

    -114.36%
    PRTA annual operating profit margin is -114.36%

    Net income

    -$122.31M
    PRTA annual net profit is -$122.31 million

    Net margin

    -90.49%
    PRTA annual net profit margin is -90.49%

    Expenses

    Total expenses

    $289.72M
    PRTA annual total expenses is $289.72 million

    Operating expenses

    $289.72M
    PRTA annual total operating expenses is $289.72 million

    Cost of goods sold

    $3.58M
    PRTA annual cost of goods sold is $3.58 million

    Selling, general & administrative expenses

    $67.20M
    PRTA annual SGA is $67.20 million

    Depreciation and amortization

    $893.00K
    PRTA annual depreciation & amortization is $893.00 thousand

    Interest expense

    $0.00
    PRTA annual interest expense is $0.00

    Income tax

    -$6.62M
    PRTA annual income tax is -$6.62 million

    EBIT & EBITDA

    EBIT

    -$154.56M
    PRTA annual earnings before interest & taxes is -$154.56 million

    EBITDA

    -$154.56M
    PRTA annual EBITDA is -$154.56 million

    Balance Sheet

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    Assets

    Total assets

    $547.11M
    PRTA annual total assets is $547.11 million

    Non current assets

    $61.70M
    PRTA annual long term assets is $61.70 million

    Current assets

    $485.41M
    PRTA annual total current assets is $485.41 million

    Cash and cash equivalents

    $471.39M
    PRTA annual cash & cash equivalents is $471.39 million

    Accounts receivable

    $0.00
    PRTA annual accounts receivable is $0.00

    Inventory

    $0.00
    PRTA annual inventory is $0.00

    Liabilities

    Total liabilities

    $60.18M
    PRTA annual total liabilities is $60.18 million

    Long term liabilities

    $11.68M
    PRTA annual total long term liabilities is $11.68 million

    Current liabilities

    $48.50M
    PRTA annual total current liabilities is $48.50 million

    Accounts payable

    $7.77M
    PRTA annual accounts payable is $7.77 million

    Debt

    Total debt

    $10.84M
    PRTA annual total debt is $10.84 million

    Total debt 1-year change

    -8.38%
    PRTA annual total debt is down -8.38% year-on-year

    Long term debt

    $8.23M
    PRTA annual long term debt is $8.23 million

    Short term debt

    $2.61M
    PRTA annual short term debt is $2.61 million

    Equity & Capital

    Shareholders equity

    $486.93M
    PRTA annual stockholders equity is $486.93 million

    Book value

    $486.93M
    PRTA annual book value is $486.93 million

    Retained earnings

    -$1.10B
    PRTA annual retained earnings is -$1.10 billion

    Working capital

    $436.91M
    PRTA annual working capital is $436.91 million

    Cash Flow Statement

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    Cashflow Activities

    Cash from operations

    -$150.05M
    PRTA annual cash flow from operations is -$150.05 million

    Cash from operations 1-year change

    -12.06%
    PRTA annual cash flow from operations is down -12.06% year-on-year

    Cash from investing

    -$298.00K
    PRTA annual cash flow from investing activities is -$298.00 thousand

    Cash from investing 1-year change

    +89.25%
    PRTA annual cash flow from investing activities is up +89.25% year-on-year

    Cash from financing

    $1.55M
    PRTA annual cash flow from financing activities is $1.55 million

    Cash from financing 1-year change

    -96.55%
    PRTA annual cash flow from financing activities is down -96.55% year-on-year

    CAPEX

    CAPEX

    $298.00K
    PRTA annual capital expenditures is $298.00 thousand

    CAPEX 1-year change

    -89.4%
    PRTA annual capital expenditures is down -89.4% year-on-year

    Free Cash Flow

    Free cash flow

    -$150.35M
    PRTA annual free cash flow is -$150.35 million

    Free cash flow 1-year change

    -9.97%
    PRTA annual free cash flow is down -9.97% year-on-year

    Profitability Ratios

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    Margins

    Gross margin

    97.35%
    PRTA annual gross profit margin is 97.35%

    Operating margin

    -114.36%
    PRTA annual operating profit margin is -114.36%

    Net margin

    -90.49%
    PRTA annual net profit margin is -90.49%

    ROA & ROE

    ROA

    -19.67%
    PRTA annual return on assets is -19.67%

    ROE

    -23.34%
    PRTA annual return on equity is -23.34%

    Valuation

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    PE Ratio

    PE ratio

    -
    PRTA price to earnings ratio value is unknown

    PE ratio Sector rank

    -
    PRTA price to earnings ratio is unknown

    PB Ratio

    PB ratio

    1.36
    PRTA price to book ratio is 1.36

    PB ratio Sector rank

    42.5%
    PRTA price to book ratio is higher than 42.5% of companies in Healthcare sector

    PS Ratio

    PS ratio

    42.74
    PRTA price to sales ratio is 42.74

    PS ratio Sector rank

    86%
    PRTA price to sales ratio is higher than 86% of companies in Healthcare sector

    Enterprise value

    Enterprise value

    $80.29M
    PRTA enterprise value is $80.29 million

    Enterprise value Sector rank

    44.25%
    PRTA enterprise value is higher than 44.25% of companies in Healthcare sector

    EV/EBITDA

    EV/EBITDA

    -0.33
    PRTA EV/EBITDA is -0.33

    EV/EBITDA Sector rank

    57.21%
    PRTA EV/EBITDA is higher than 57.21% of companies in Healthcare sector

    Financial Health

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    Liquidity

    Current ratio

    10.01
    PRTA annual current ratio is 10.01

    Quick ratio

    10.01
    PRTA annual quick ratio is 10.01

    Leverage

    Debt to equity

    0.02
    PRTA annual debt to equity ratio is 0.02

    Interest coverage ratio

    -
    PRTA annual interest coverage ratio value is unknown

    Risk & Stability

    Piotroski F-Score

    2
    PRTA piotroski f-score is 2

    Altman Z-Score

    1.86
    PRTA altman z-score is 1.86

    Analyst ratings

    Recent major analysts updates

    Sep 2, 25 JMP Securities
    Market Outperform
    Aug 28, 25 Piper Sandler
    Overweight
    Aug 28, 25 Chardan Capital
    Buy
    Aug 5, 25 RBC Capital
    Sector Perform
    Aug 5, 25 HC Wainwright & Co.
    Buy
    Aug 5, 25 Chardan Capital
    Buy
    Jun 20, 25 Cantor Fitzgerald
    Neutral
    May 28, 25 B of A Securities
    Underperform
    May 27, 25 Piper Sandler
    Overweight
    May 27, 25 Oppenheimer
    Perform

    Institutional Ownership

    Screeners with PRTA included

    Growing Shares Outstanding
    Stocks below SMA 200
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    • What is the ticker symbol for Prothena Corporation plc?
    • Does Prothena Corporation plc pay dividends?
    • What sector is Prothena Corporation plc in?
    • What industry is Prothena Corporation plc in?
    • What country is Prothena Corporation plc based in?
    • When did Prothena Corporation plc go public?
    • Is Prothena Corporation plc in the S&P 500?
    • Is Prothena Corporation plc in the NASDAQ 100?
    • Is Prothena Corporation plc in the Dow Jones?
    • When was Prothena Corporation plc's last earnings report?
    • When does Prothena Corporation plc report earnings?

    What is the ticker symbol for Prothena Corporation plc?

    The ticker symbol for Prothena Corporation plc is NASDAQ:PRTA

    Does Prothena Corporation plc pay dividends?

    No, Prothena Corporation plc does not pay dividends

    What sector is Prothena Corporation plc in?

    Prothena Corporation plc is in the Healthcare sector

    What industry is Prothena Corporation plc in?

    Prothena Corporation plc is in the Biotechnology industry

    What country is Prothena Corporation plc based in?

    Prothena Corporation plc is headquartered in Ireland

    When did Prothena Corporation plc go public?

    Prothena Corporation plc's initial public offering (IPO) was on December 18, 2012

    Is Prothena Corporation plc in the S&P 500?

    No, Prothena Corporation plc is not included in the S&P 500 index

    Is Prothena Corporation plc in the NASDAQ 100?

    No, Prothena Corporation plc is not included in the NASDAQ 100 index

    Is Prothena Corporation plc in the Dow Jones?

    No, Prothena Corporation plc is not included in the Dow Jones index

    When was Prothena Corporation plc's last earnings report?

    Prothena Corporation plc's most recent earnings report was on August 4, 2025

    When does Prothena Corporation plc report earnings?

    The next expected earnings date for Prothena Corporation plc is November 10, 2025
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