Prothena Corporation plc PRTA

Healthcare — Biotechnology

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

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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.

	Jun '26	Mar '26	Dec '25	Sep '25	Jun '25	Mar '25	Dec '24	Sep '24	Jun '24	Mar '24	Dec '23	Sep '23	Jun '23	Mar '23	Dec '22	Sep '22	Jun '22	Mar '22	Dec '21	Sep '21	Jun '21	Mar '21	Dec '20	Sep '20	Jun '20	Mar '20	Dec '19	Sep '19	Jun '19	Mar '19	Dec '18	Sep '18	Jun '18	Mar '18	Dec '17	Sep '17	Jun '17	Mar '17	Dec '16	Sep '16	Jun '16	Mar '16
Net Income	(43.99)	(151.18)	(244.09)	(280.46)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Depreciation & Amortization	3.72	3.71	3.70	3.67	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Non Cash Items (Other)	22.23	73.42	80.98	82.09	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Accounts Receivable Change	—	—	—	—	—	—	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	—	—	—	—	—	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	—	‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	—	—	—	—	—	—
Change in payables and accrued liability	(21.93)	(18.91)	(15.78)	(7.54)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Change in other assets and liabilities	(20.08)	11.61	11.60	14.19	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Operating Cash Flow	(60.05)	(81.34)	(163.58)	(188.04)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Capital expenditures	(0.75)	—	(0.14)	(0.18)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Other investing activities	—	—	—	—	—	—	—	—	—	—	—	‡‡‡‡‡	‡‡‡‡‡	—	‡‡‡	‡‡‡‡‡	‡‡‡‡‡	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Investing cash flow	(0.66)	(0.10)	(0.14)	(0.18)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Repayment/Issuance of Debt (Net)	—	—	—	—	—	—	—	—	—	—	—	—	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	—	—	—	—	—	—	—	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity Repurchase (Common, Net)	(22.65)	(7.16)	(0.26)	(0.32)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Other financial activities	—	—	—	—	‡‡‡‡‡	—	—	—	—	—	—	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	—	—	—	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	—	—
Financing cash flow	(22.53)	(7.04)	(0.14)	(0.20)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Change in Cash	(83.24)	(88.47)	(163.86)	(188.42)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Beginning Cash	308.39	308.39	472.25	472.25	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Ending Cash	225.15	219.92	308.39	283.83	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Stock Based Compensation	29.07	33.61	37.64	41.09	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Dividends Paid (Common)	0.00	0.00	0.00	0.00	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡	‡‡‡
Assets Liabilities Change (Total)	(42.01)	(7.30)	(4.17)	6.66	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡
Issuance/Purchase of Shares	(22.65)	(7.16)	(0.26)	(0.32)	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡	‡‡‡‡‡

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