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10-K

Annual Report

PROTHENA CORPORATION PUBLIC LIMITED COMPANY PRTA

0001559053-26-000008

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Filed
Feb 27, 2026 12:00 AM ET
Period of report

On SEC.gov

Financials in this filing

Metric Period Value
Shares Outstanding FY 2025 · Feb 20, 2026 53.83M sh
Shares Diluted FY 2025 · Dec 31, 2025 53.83M sh
Shares Diluted FY 2025 · Dec 31, 2024 53.77M sh
Shares Diluted FY 2025 · Dec 31, 2023 53.22M sh
Operating Cash Flow FY 2025 · Dec 31, 2025 −$163.58M
Operating Cash Flow FY 2025 · Dec 31, 2024 −$150.05M
Operating Cash Flow FY 2025 · Dec 31, 2023 −$133.91M
Cash And Equivalents FY 2025 · Dec 31, 2025 $307.53M
Cash And Equivalents FY 2025 · Dec 31, 2024 $471.39M
Cash And Equivalents FY 2025 · Dec 31, 2023 $618.83M
Stockholders Equity FY 2025 · Dec 31, 2025 $280.47M
Stockholders Equity FY 2025 · Dec 31, 2024 $486.93M
Current Liabilities FY 2025 · Dec 31, 2025 $40.84M
Current Liabilities FY 2025 · Dec 31, 2024 $48.5M
Total Liabilities FY 2025 · Dec 31, 2025 $46.33M
Total Liabilities FY 2025 · Dec 31, 2024 $60.18M
Current Assets FY 2025 · Dec 31, 2025 $315.19M
Current Assets FY 2025 · Dec 31, 2024 $485.41M
Total Assets FY 2025 · Dec 31, 2025 $326.8M
Total Assets FY 2025 · Dec 31, 2024 $547.11M
Eps Diluted FY 2025 · Dec 31, 2025 −$4.53
Eps Diluted FY 2025 · Dec 31, 2024 −$2.27
Eps Diluted FY 2025 · Dec 31, 2023 −$2.76
Eps Basic FY 2025 · Dec 31, 2025 −$4.53
Eps Basic FY 2025 · Dec 31, 2024 −$2.27
Eps Basic FY 2025 · Dec 31, 2023 −$2.76
Sga Expense FY 2025 · Dec 31, 2025 $59.39M
Sga Expense FY 2025 · Dec 31, 2024 $67.2M
Sga Expense FY 2025 · Dec 31, 2023 $61.84M
Rd Expense FY 2025 · Dec 31, 2025 $134.85M
Rd Expense FY 2025 · Dec 31, 2024 $222.52M
Rd Expense FY 2025 · Dec 31, 2023 $220.57M
Net Income FY 2025 · Dec 31, 2025 −$244.09M
Net Income FY 2025 · Dec 31, 2024 −$122.31M
Net Income FY 2025 · Dec 31, 2023 −$147.03M
Operating Income FY 2025 · Dec 31, 2025 −$214.64M
Operating Income FY 2025 · Dec 31, 2024 −$154.56M
Operating Income FY 2025 · Dec 31, 2023 −$191.04M
Revenue FY 2025 · Dec 31, 2025 $9.68M
Revenue FY 2025 · Dec 31, 2024 $135.16M
Revenue FY 2025 · Dec 31, 2023 $91.37M