bestshares.com Logo
Popular
  • NVDA
    NVDA Nvidia
  • GOOGL
    GOOGL Alphabet Inc.
  • AAPL
    AAPL Apple Inc.
  • MSFT
    MSFT Microsoft Corporation
  • AMZN
    AMZN Amazon.com, Inc.
  • SPY
    SPY SPDR S&P 500 ETF Trust
  • QQQ
    QQQ Invesco QQQ Trust
    • Prothena Corporation logo

    Prothena Corporation

    PRTA | NASDAQ
    Chart Builder DCF Calculator
    $8.96
    +$0.45 (+5.29%)
    Sep 22, 2026, 10:51 AM ET · Market open
    Overview Rating Statistics Financials Earnings Analysts Ownership Profile
    Income Statement Balance Sheet Cashflow Statement Ratios
    Annual Quarterly TTM

    Revenue

    High 139.17M Q3 2021
    Low 21K Q4 2025
    5Y CAGR -55.83%
    Fiscal Quarter
    Period Ending
    Q2 2026
    Jun 29, 2026
    Q1 2026
    Mar 30, 2026
    Q4 2025
    Dec 30, 2025
    Q3 2025
    Sep 29, 2025
    Q2 2025
    Jun 29, 2025
    Q1 2025
    Mar 30, 2025
    Q4 2024
    Dec 30, 2024
    Q3 2024
    Sep 29, 2024
    Q2 2024
    Jun 29, 2024
    Q1 2024
    Mar 30, 2024
    Q4 2023
    Dec 30, 2023
    Q3 2023
    Sep 29, 2023
    Q2 2023
    Jun 29, 2023
    Q1 2023
    Mar 30, 2023
    Q4 2022
    Dec 30, 2022
    Q3 2022
    Sep 29, 2022
    Q2 2022
    Jun 29, 2022
    Q1 2022
    Mar 30, 2022
    Q4 2021
    Dec 30, 2021
    Q3 2021
    Sep 29, 2021
    Q2 2021
    Jun 29, 2021
    Q1 2021
    Mar 30, 2021
    Revenue
    		1.01M 51.08M 21K 2.42M 4.42M 2.83M 2.12M 970K 132.01M 50K 316K 84.87M 4.02M 2.17M 49.92M 1.52M 1.31M 1.15M 1.17M 139.17M 60.07M 160K
    Cost of Revenue
    		n/a 918K 942K 28.94M n/a n/a n/a n/a n/a n/a 61.89M 57.91M 56.01M 44.76M 36.87M 39.86M 31.57M 27.26M 22.06M 17.99M 21.09M 21.14M
    Gross Profit
    		1.01M 50.17M -921K -26.52M 4.42M 2.83M 2.12M 970K 132.01M 50K -61.58M 26.95M -51.99M -42.59M 13.05M -38.34M -30.26M -26.11M -20.89M 121.18M 38.98M -20.98M
    Operating Income
    		-21.1M 25.79M -27.21M -40.24M -84.62M -65.58M -64.9M -66.51M 58.38M -81.53M -78.52M 10.31M -66.5M -56.33M -72K -50.33M -43.21M -37.94M -33.09M 109.23M 27.95M -32.11M
    Interest Income
    		2.55M 2.42M 2.65M 3.35M 3.79M 4.35M 5.39M 6.74M 6.52M 7.17M 8.1M 8.52M 7.7M 6.69M 3.74M 1.91M 639K 53K 12K 11K 8K 11K
    Pretax Income
    		-18.58M 32.72M -21.58M -36.17M -80.97M -61.37M -59.5M -59.84M 64.85M -74.44M -64.33M 25M -50.29M -43.95M 9.35M -43.11M -39.92M -34.62M -33.1M 109.3M 27.9M -32.08M
    Net Income
    		-18.58M 32.72M -21.59M -36.54M -125.77M -60.2M -57.96M -59M 66.89M -72.24M -67.48M 21.91M -54.6M -46.86M 6.35M -45.76M -41.24M -36.29M -33.18M 109.25M 27.64M -36.74M
    Selling & General & Admin
    		10.9M 12.67M 12.65M 13.24M 15.91M 17.6M 16.85M 16.76M 16.13M 17.46M 16.94M 16.65M 14.51M 13.74M 13.12M 11.99M 12.95M 11.84M 12.21M 11.96M 11.03M 11.13M
    Research & Development
    		8.8M 12.63M 14.59M 28.94M 40.52M 50.81M 50.17M 50.72M 57.51M 64.11M 61.89M 57.91M 56.01M 44.76M 36.87M 39.86M 31.57M 27.26M 22.06M 17.99M 21.09M 21.14M
    Other Expenses
    		2.41M -918K -942K -28.46M 32.61M n/a n/a n/a n/a n/a -61.89M -57.91M -56.01M -44.76M -36.87M -39.86M -31.57M -27.26M -22.06M -17.99M -21.09M -21.14M
    Operating Expenses
    		22.11M 24.38M 26.29M 13.72M 89.04M 68.41M 67.02M 67.48M 73.64M 81.58M 16.94M 16.65M 14.51M 13.74M 13.12M 11.99M 12.95M 11.84M 12.21M 11.96M 11.03M 11.13M
    Interest Expense
    		n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a
    Selling & Marketing Expenses
    		n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a
    Cost & Expenses
    		22.11M 25.29M 27.23M 42.66M 89.04M 68.41M 67.02M 67.48M 73.64M 81.58M 78.83M 74.56M 70.52M 58.49M 50M 51.85M 44.52M 39.1M 34.26M 29.95M 32.12M 32.27M
    Income Tax Expense
    		2K 1K 10K 371K 44.8M -1.18M -1.55M -835K -2.04M -2.2M 3.14M 3.09M 4.31M 2.91M 3M 2.65M 1.33M 1.67M 83K 51K 254K 4.66M
    Shares Outstanding (Basic)
    		52.15M 53.71M 53.83M 53.83M 53.83M 53.83M 53.82M 53.79M 53.77M 53.71M 53.67M 53.56M 53.12M 52.5M 48.96M 46.99M 46.81M 46.53M 46.62M 45.63M 44.33M 40.25M
    Shares Outstanding (Diluted)
    		52.15M 54.11M 53.83M 53.83M 53.83M 53.83M 53.82M 53.79M 55.04M 53.71M 53.67M 58M 53.12M 52.5M 53.98M 46.99M 46.81M 46.7M 46.62M 51.21M 47.41M 40.25M
    EPS (Basic)
    		-0.36 0.61 -0.40 -0.68 -2.34 -1.12 -1.08 -1.10 1.24 -1.34 -1.26 0.41 -1.03 -0.89 0.13 -0.97 -0.88 -0.78 -0.71 2.39 0.62 -0.91
    EPS (Diluted)
    		-0.36 0.60 -0.40 -0.68 -2.34 -1.12 -1.08 -1.10 1.22 -1.34 -1.26 0.38 -1.03 -0.89 0.12 -0.97 -0.88 -0.78 -0.71 2.13 0.58 -0.91
    EBITDA
    		-18.2M 33.64M -20.64M -35.94M -51.78M -61.15M -59.28M -59.61M 65.08M -74.23M -64.06M 25.23M -50.07M -43.75M 9.55M -42.93M -39.73M -34.44M -32.86M 109.58M 28.19M -31.81M
    EBIT
    		-18.58M 32.72M -21.58M -36.17M -52.01M -61.37M -59.5M -59.84M 64.85M -74.44M -64.33M 25M -50.29M -43.95M 9.35M -43.11M -39.92M -34.62M -33.1M 109.3M 27.9M -32.11M
    Depreciation & Amortization
    		381K 918K 942K 229K 225K 223K 221K 226K 231K 215K 276K 229K 222K 201K 196K 182K 184K 182K 240K 280K 291K 304K

    © 2026 bestshares.com. All rights reserved.