Prothena Corporation plc
PRTA Healthcare Biotechnology
Prothena Corporation plc’s revenue for fiscal 2025 (year ended December 2025) was $9.7 million, down 92.8% from fiscal 2024. In the quarter to June 2026, revenue fell 77.2%, EPS grew 84.6% and free cash flow grew 44.6%, each against the same quarter a year earlier. Insiders bought in the last twelve months.
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A Cash Flow Statement is a financial report that details the cash inflows and outflows of a company over a specific period. It is divided into three sections: operating activities, investing activities, and financing activities. This statement helps assess the company’s liquidity, solvency, and overall financial health. By tracking cash movements, it provides insights into the company's ability to generate cash to fund operations, pay debts, and invest in growth. Businesses and investors use it to evaluate the sustainability of a company's cash flow and its financial stability.
| Dec '16 | Dec '17 | Dec '18 | Dec '19 | Dec '20 | Dec '21 | Dec '22 | Dec '23 | Dec '24 | Dec '25 | |
|---|---|---|---|---|---|---|---|---|---|---|
Net Income |
(160.11) | (153.24) | (155.64) | (77.68) | (111.14) | 66.98 | (116.95) | (147.03) | (122.31) | (244.09) |
Depreciation & Amortization |
2.43 | 3.07 | 3.22 | 6.82 | 6.98 | 6.80 | 6.74 | 8.41 | 3.59 | 3.70 |
Non Cash Items (Other) |
22.54 | 26.15 | 30.16 | 22.34 | 20.33 | 29.23 | 20.19 | 25.24 | 36.62 | 80.98 |
Accounts Receivable Change |
0.33 | (0.06) | 0.24 | — | 0.05 | 0.02 | — | (5.16) | 5.16 | — |
Change in payables and accrued liability |
15.19 | 0.15 | (25.63) | (0.08) | 7.73 | (0.49) | 11.87 | 22.86 | (18.30) | (15.78) |
Change in other assets and liabilities |
3.36 | (7.31) | 119.38 | (4.37) | (4.25) | (9.93) | (30.67) | (38.23) | (54.80) | 11.60 |
Operating Cash Flow |
(116.25) | (131.18) | (28.28) | (52.97) | (80.36) | 92.61 | (108.82) | (133.91) | (150.05) | (163.58) |
Capital expenditures |
(16.64) | (3.52) | (1.73) | (0.55) | (0.20) | (0.57) | (0.46) | (2.77) | (0.30) | (0.14) |
Investing cash flow |
(16.64) | (3.52) | (1.73) | (0.55) | (0.20) | (0.57) | (0.46) | (2.77) | (0.30) | (0.14) |
Equity Repurchase (Common, Net) |
139.29 | 168.16 | 44.44 | 0.23 | 0.22 | 190.33 | 241.46 | 45.10 | 1.55 | (0.14) |
Other financial activities |
13.99 | (2.76) | (4.40) | — | — | — | — | — | — | — |
Financing cash flow |
153.29 | 165.40 | 40.04 | 0.23 | 0.22 | 190.33 | 241.46 | 45.10 | 1.55 | (0.14) |
Change in Cash |
20.39 | 30.70 | 10.04 | (53.29) | (80.34) | 282.36 | 132.17 | (91.58) | (148.79) | (163.86) |
Beginning Cash |
370.59 | 390.98 | 421.68 | 431.72 | 378.43 | 298.08 | 580.45 | 712.62 | 621.04 | 472.25 |
Ending Cash |
390.98 | 421.68 | 431.72 | 378.43 | 298.08 | 580.45 | 712.62 | 621.04 | 472.25 | 308.39 |
Stock Based Compensation |
24.93 | 26.76 | 26.06 | 23.59 | 22.01 | 24.66 | 31.32 | 40.91 | 45.96 | 37.64 |
Dividends Paid (Common) |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Net Cash/Marketcap |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Assets Liabilities Change (Total) |
18.89 | (7.16) | 93.99 | (4.45) | 3.48 | (10.40) | (18.80) | (20.53) | (67.94) | (4.17) |
Issuance/Purchase of Shares |
139.29 | 168.16 | 44.44 | 0.23 | 0.22 | 190.33 | 241.46 | 45.10 | 1.55 | (0.14) |
| Other line items | ||||||||||
Revenue per Employee |
0.01 | 0.22 | 0.02 | 0.02 | 0.01 | 2.45 | 0.42 | 0.53 | 0.83 | 0.14 |