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Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
8.16
-0.07 (-0.85%)
At close: Nov 13, 2026, 4:00 PM EST
8.16
0.00 (0.00%)
After-hours: Nov 13, 2026, 7:45 PM EST

Prothena Corporation Cash Flow Statement

Millions USD. Fiscal year is Jan - Dec.

Operating Activities

Fiscal Year
TTMFY 2025FY 2024FY 2023FY 2022FY 2021
Period Ending
Sep '26 Dec '25 Dec '24 Dec '23 Dec '22 Dec '21
Net Income
-23.96-244.09-122.31-147.03-116.9566.98
Depreciation & Amortization
0.810.90.890.930.741.12
Loss (Gain) From Sale of Assets
0.110.1-0.020-
Stock-Based Compensation
28.2837.6445.9640.9131.3224.66
Other Operating Activities
2.946.05-6.65-8.21-5.1410.26
Change in Accounts Receivable
--5.16-5.16-0.02
Change in Accounts Payable
-23.64-15.78-18.322.8611.87-0.49
Change in Unearned Revenue
-2.69-9.63-55.11-29.33-13.860.35
Change in Other Net Operating Assets
-6.3121.240.3-8.9-16.81-10.28
Operating Cash Flow
-31.45-163.58-150.05-133.91-108.8292.61
Operating Cash Flow Growth
------

Investing Activities

Fiscal Year
TTMFY 2025FY 2024FY 2023FY 2022FY 2021
Period Ending
Sep '26 Dec '25 Dec '24 Dec '23 Dec '22 Dec '21
Capital Expenditures
-0.73-0.14-0.3-2.81-0.46-0.58
Sale of Property, Plant & Equipment
---0.04--
Investing Cash Flow
-0.73-0.14-0.3-2.77-0.46-0.58

Financing Activities

Fiscal Year
TTMFY 2025FY 2024FY 2023FY 2022FY 2021
Period Ending
Sep '26 Dec '25 Dec '24 Dec '23 Dec '22 Dec '21
Issuance of Common Stock
--1.9145.1241.46190.33
Other Financing Activities
--0.14-0.35---
Financing Cash Flow
-27.3-0.141.5545.1241.46190.33

Net Cash Flow

Fiscal Year
TTMFY 2025FY 2024FY 2023FY 2022FY 2021
Period Ending
Sep '26 Dec '25 Dec '24 Dec '23 Dec '22 Dec '21
Net Cash Flow
-59.48-163.86-148.79-91.58132.17282.36

Free Cash Flow

Fiscal Year
TTMFY 2025FY 2024FY 2023FY 2022FY 2021
Period Ending
Sep '26 Dec '25 Dec '24 Dec '23 Dec '22 Dec '21
Free Cash Flow
-32.17-163.72-150.35-136.72-109.2992.03
Free Cash Flow Growth
------
Free Cash Flow Margin
-61.01%-1690.60%-111.24%-149.63%-202.74%45.88%
Free Cash Flow Per Share
-0.61-3.04-2.80-2.57-2.311.90
Levered Free Cash Flow
-29.2-78.53-53.5-80.02-37.4475.55
Unlevered Free Cash Flow
-29.2-78.53-53.5-80.02-37.4475.55

Additional Metrics

Fiscal Year
TTMFY 2025FY 2024FY 2023FY 2022FY 2021
Period Ending
Sep '26 Dec '25 Dec '24 Dec '23 Dec '22 Dec '21
Cash Income Tax Paid
-0.933.171.552.660.58
Change in Working Capital
-32.63-4.17-67.94-20.53-18.8-10.4
SEC Filings: 10-K · 10-Q