Prothena Corp Public annual free cash flow
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2025
Prothena Corp Public Free Cash Flow (FCF) History (PRTA)
Prothena Corp Public reported −$163.7M in free cash flow for fiscal 2025, a decrease of $13.4M from the previous fiscal year, with a free cash flow margin of −1690.60%.
View full Prothena Corp Public company overviewProthena Corp Public free cash flow by year
| Fiscal year | Period ended | Free cash flow | Change | Growth | FCF margin |
|---|---|---|---|---|---|
| 2025 | 2025-12-31 | −$163.7M | −$13.4M | — | −1690.60% |
| 2024 | 2024-12-31 | −$150.3M | −$13.6M | — | −111.24% |
| 2023 | 2023-12-31 | −$136.7M | −$27.4M | — | −149.63% |
| 2022 | 2022-12-31 | −$109.3M | −$201.3M | — | −202.74% |
| 2021 | 2021-12-31 | $92.0M | $172.6M | — | +45.88% |
| 2020 | 2020-12-31 | −$80.6M | −$27.0M | — | −9444.08% |
| 2019 | 2019-12-31 | −$53.5M | −$23.5M | — | −6575.43% |
| 2018 | 2018-12-31 | −$30.0M | $104.8M | — | −3145.97% |
| 2017 | 2017-12-31 | −$134.8M | −$1.9M | — | −489.88% |
| 2016 | 2016-12-31 | −$132.9M | −$72.9M | — | −12596.59% |
| 2015 | 2015-12-31 | −$60.0M | −$58.8M | — | −3732.55% |
| 2014 | 2014-12-31 | −$1.2M | $31.5M | — | −2.38% |
| 2013 | 2013-12-31 | −$32.7M | $10.7M | — | −4831.66% |
| 2012 | 2012-12-31 | −$43.4M | −$23.1M | — | −1631.79% |
| 2011 | 2011-12-31 | −$20.3M | — | — | — |
Prothena Corp Public quarterly free cash flow
Q1.12
Q3.12
Q1.13
Q2.13
Q3.13
Q4.13
Q1.14
Q2.14
Q3.14
Q4.14
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Q2.16
Q3.16
Q4.16
Q1.17
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Q3.17
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Q3.18
Q4.18
Q1.19
Q2.19
Q3.19
Q4.19
Q1.20
Q2.20
Q3.20
Q4.20
Q1.21
Q2.21
Q3.21
Q4.21
Q1.22
Q2.22
Q3.22
Q4.22
Q1.23
Q2.23
Q3.23
Q4.23
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Q2.24
Q3.24
Q4.24
Q1.25
Q2.25
Q3.25
Q4.25
Q1.26
Q2.26
| Fiscal quarter | Period ended | Free cash flow | Change | YoY growth | FCF margin |
|---|---|---|---|---|---|
| Q2 2026 | 2026-06-30 | −$25.7M | $20.7M | — | −2544.65% |
| Q1 2026 | 2026-03-31 | $28.9M | $82.3M | — | +56.53% |
| Q4 2025 | 2025-12-31 | −$23.3M | $24.5M | — | −111009.52% |
| Q3 2025 | 2025-09-30 | −$40.6M | $4.6M | — | −1680.12% |
| Q2 2025 | 2025-06-30 | −$46.4M | −$62.2M | — | −1050.36% |
| Q1 2025 | 2025-03-31 | −$53.4M | $19.7M | — | −1888.44% |
| Q4 2024 | 2024-12-31 | −$47.8M | $4.8M | — | −2252.24% |
| Q3 2024 | 2024-09-30 | −$45.2M | −$54.3M | — | −4659.28% |
| Q2 2024 | 2024-06-30 | $15.8M | $61.5M | — | +11.98% |
| Q1 2024 | 2024-03-31 | −$73.2M | −$25.6M | — | −146308.00% |
| Q4 2023 | 2023-12-31 | −$52.6M | −$47.5M | — | −16641.46% |
| Q3 2023 | 2023-09-30 | $9.1M | $40.4M | — | +10.69% |
| Q2 2023 | 2023-06-30 | −$45.7M | −$10.3M | — | −1137.05% |
| Q1 2023 | 2023-03-31 | −$47.5M | −$10.1M | — | −2190.23% |
| Q4 2022 | 2022-12-31 | −$5.1M | $17.6M | — | −10.27% |
| Q3 2022 | 2022-09-30 | −$31.3M | −$143.2M | — | −2063.09% |
| Q2 2022 | 2022-06-30 | −$35.4M | −$72.0M | — | −2700.00% |
| Q1 2022 | 2022-03-31 | −$37.4M | −$3.7M | — | −3246.92% |
| Q4 2021 | 2021-12-31 | −$22.8M | −$3.6M | — | −1943.43% |
| Q3 2021 | 2021-09-30 | $111.9M | $131.4M | — | +80.40% |
| Q2 2021 | 2021-06-30 | $36.6M | $55.4M | — | +60.96% |
| Q1 2021 | 2021-03-31 | −$33.7M | −$10.5M | — | −21071.25% |
| Q4 2020 | 2020-12-31 | −$19.1M | −$4.6M | — | −5318.06% |
| Q3 2020 | 2020-09-30 | −$19.5M | −$10.3M | — | −12408.28% |
| Q2 2020 | 2020-06-30 | −$18.7M | −$6.6M | — | −9611.79% |
| Q1 2020 | 2020-03-31 | −$23.2M | −$5.6M | — | −16446.10% |
| Q4 2019 | 2019-12-31 | −$14.6M | $8.0M | — | −5700.78% |
| Q3 2019 | 2019-09-30 | −$9.2M | $24.5M | — | −4483.90% |
| Q2 2019 | 2019-06-30 | −$12.2M | −$70.2M | — | −7288.62% |
| Q1 2019 | 2019-03-31 | −$17.6M | $14.2M | — | −9444.09% |
| Q4 2018 | 2018-12-31 | −$22.6M | $17.3M | — | −11643.30% |
| Q3 2018 | 2018-09-30 | −$33.7M | −$15.4M | — | −13225.49% |
| Q2 2018 | 2018-06-30 | $58.0M | $94.3M | — | +20800.72% |
| Q1 2018 | 2018-03-31 | −$31.8M | $8.6M | — | −13993.39% |
| Q4 2017 | 2017-12-31 | −$39.9M | $1.1M | — | −17423.58% |
| Q3 2017 | 2017-09-30 | −$18.3M | $20.3M | — | −8345.21% |
| Q2 2017 | 2017-06-30 | −$36.3M | −$8.3M | — | −135.36% |
| Q1 2017 | 2017-03-31 | −$40.3M | −$15.0M | — | −15575.68% |
| Q4 2016 | 2016-12-31 | −$41.0M | −$24.1M | — | −23949.12% |
| Q3 2016 | 2016-09-30 | −$38.6M | −$21.4M | — | −13502.10% |
| Q2 2016 | 2016-06-30 | −$28.0M | −$16.9M | — | −8417.42% |
| Q1 2016 | 2016-03-31 | −$25.3M | −$10.5M | — | −9545.28% |
| Q4 2015 | 2015-12-31 | −$16.8M | −$4.2M | — | −5475.90% |
| Q3 2015 | 2015-09-30 | −$17.2M | −$4.9M | — | −4019.35% |
| Q2 2015 | 2015-06-30 | −$11.2M | −$17.1M | — | −4021.58% |
| Q1 2015 | 2015-03-31 | −$14.7M | −$32.6M | — | −2487.02% |
| Q4 2014 | 2014-12-31 | −$12.6M | −$2.8M | — | −625.43% |
| Q3 2014 | 2014-09-30 | −$12.4M | −$1.8M | — | −832.50% |
| Q2 2014 | 2014-06-30 | $5.9M | $13.0M | — | +38.91% |
| Q1 2014 | 2014-03-31 | $17.9M | $23.1M | — | +55.43% |
| Q4 2013 | 2013-12-31 | −$9.8M | −$2.3M | — | −5891.62% |
| Q3 2013 | 2013-09-30 | −$10.5M | −$1.8M | — | −6158.48% |
| Q2 2013 | 2013-06-30 | −$7.1M | — | — | −4242.51% |
| Q1 2013 | 2013-03-31 | −$5.2M | — | — | −3048.54% |
| Q3 2012 | 2012-09-30 | −$7.6M | — | — | — |
| Q1 2012 | 2012-03-31 | −$8.8M | — | — | — |
Prothena Corp Public free cash flow growth trends
Over the last five reported fiscal years, free cash flow declined from −$80.6M to −$163.7M, a net decrease of $83.2M. Prothena Corp Public's latest reported quarter, Q2 2026, generated −$25.7M in free cash flow, an increase of $20.7M year over year.
About the metric
What free cash flow means
Free cash flow is the cash a company generates from operations after capital expenditures. Positive FCF can fund dividends, buybacks, debt repayment, or reinvestment; negative FCF means capital spending exceeded operating cash flow for that period.
Calculation and source
How free cash flow is calculated
TickerStat calculates free cash flow as SEC-reported operating cash flow minus capital expenditures. FCF margin equals free cash flow divided by revenue. Fiscal periods can differ from calendar years, so the tables include exact period-end dates.
Review Prothena Corp Public filings at SEC.gov ↗