Tuesday 13 October 2026 Export PRTA’s income statement to Excel — free account

Prothena Corporation plc

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.

8.42 0.01 −0.12%

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Market cap: $432.8M
P/E: 0.0×
Fwd P/E: 188×
Dividend yield: —
F-score: 2/9
Altman Z: −0.24
Beneish M: n/a
Dividend safety: n/a

Overview Business Profile Financial Analysis Income Statement Balance Sheet Cash Flow Metrics & Ratios 10-Q 10-K

	Jun '26	Mar '26	Dec '25	Sep '25	Older periods
Piotroski F-Score Full definition →	5	3	2	2	+8 more TTM periods Free account
ROE Full definition →	(14.39%)	(40.30%)	(63.62%)	(67.63%)
ROA Full definition →	(12.54%)	(35.77%)	(55.86%)	(59.18%)
ROIC Full definition →	0.00%	0.00%	0.00%	0.00%
Return on Tangible Assets Full definition →	(15.55%)	(48.98%)	(88.28%)	(96.38%)
Average Days of Receivables Full definition →	0.00	0.00	0.00	0.00
Free Cash Flow per Share Full definition →	(1.17)	(1.51)	(3.04)	(3.50)
Free Cash Flow Full definition →	(60.80)	(81.34)	(163.72)	(188.22)
Capital Expenditures Full definition →	(0.75)	—	(0.14)	(0.18)
Other line items
Cash ROIC Full definition →	(10.57%)	(12.67%)	(27.84%)	(30.08%)
Accounts Receivable Turnover Full definition →	0.00	0.00	0.00	0.00
Accounts Payable Turnover Full definition →	0.00	0.00	0.00	0.00
Average Days of Payables Full definition →	0.00	0.00	0.00	0.00
Tax Rate Full definition →	(0.01)	0.42	0.22	0.17
Research and Development Expense of Revenue Full definition →	119.11%	166.84%	1,392.52%	1,446.11%
Selling, General and Administrative Expense of Revenue Full definition →	90.68%	93.99%	613.30%	539.57%
Share Based Compensation of Revenue Full definition →	53.30%	58.00%	388.68%	348.60%
Operating CF/Net income Full definition →	1.37	0.54	0.67	0.67
Depreciation/Fixed assets Full definition →	1.50	1.89	1.73	1.49
Capex/Depreciation Full definition →	(0.20)	0.00	(0.04)	(0.05)
Revenue per Share Full definition →	1.05	1.08	0.18	0.22
Operating CF per Share Full definition →	(1.15)	(1.51)	(3.04)	(3.49)
Capex per Share Full definition →	(0.01)	0.00	0.00	0.00
Capex to Sales Full definition →	0.01	0.00	0.01	0.02

Show all line items

Columns are period end dates

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