Ionis Pharmaceuticals, Inc. Unrecognized Tax Benefits
Ionis Pharmaceuticals, Inc. (IONS) had Unrecognized Tax Benefits of $53.96 million as of 2025-12-31, per its 10-K filed 2026-02-26.
Financial Statements › Notes › Income Taxes › Income Tax Uncertainties
us-gaap:UnrecognizedTaxBenefits · last filed 2026-02-26
- 2025-12-31: Unrecognized Tax Benefits $53.96M.
- 2024-12-31: Unrecognized Tax Benefits $41.16M.
- 2023-12-31: Unrecognized Tax Benefits $43.30M.
- 2022-12-31: Unrecognized Tax Benefits $56.57M.
| Period end | Unrecognized Tax Benefits |
|---|---|
| 2025-12-31 | $53.96M 10-K · filed 2026-02-26 |
| 2024-12-31 | $41.16M 10-K · filed 2026-02-26 |
| 2023-12-31 | $43.30M 10-K · filed 2026-02-26 |
| 2022-12-31 | $56.57M 10-K · filed 2026-02-26 |
| 2021-12-31 | $55.09M 10-K · filed 2025-02-19 |
| 2020-12-31 | $54.16M 10-K · filed 2024-02-21 |
| 2019-12-31 | $69.78M 10-K · filed 2023-02-22 |
| 2018-12-31 | $68.30M 10-K · filed 2022-02-25 |
| 2017-12-31 | $78.01M 10-K · filed 2021-02-24 |
| 2016-12-31 | $67.00M 10-K · filed 2020-03-02 |
| 2015-12-31 | $51.26M 10-K · filed 2019-03-01 |
| 2014-12-31 | $27.36M 10-K · filed 2018-02-28 |
| 2013-12-31 | $23.96M 10-K · filed 2017-03-01 |
| 2012-12-31 | $10.87M 10-K · filed 2016-02-26 |
| 2011-12-31 | $9.83M 10-K · filed 2015-03-02 |
| 2010-12-31 | $8.97M 10-K · filed 2014-03-03 |
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