Unrecognized Tax Benefits of IONIS PHARMACEUTICALS INC from 31 Dec 2010 to 31 Dec 2025

Taxonomy & unit
us-gaap: USD
Description
Amount of unrecognized tax benefits.
Summary
IONIS PHARMACEUTICALS INC quarterly Unrecognized Tax Benefits in USD history and change rate from 31 Dec 2010 to 31 Dec 2025.
  • IONIS PHARMACEUTICALS INC Unrecognized Tax Benefits for the quarter ending 31 Dec 2025 was $53,962,000, a 31% increase year-over-year.
Source SEC data
View on sec.gov
Unrecognized Tax Benefits, Quarterly (USD)
Unrecognized Tax Benefits, YoY Quarterly Change (%)

IONIS PHARMACEUTICALS INC Quarterly Unrecognized Tax Benefits (USD)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q4 2025 $53,962,000 +$12,801,000 +31% 31 Dec 2025 10-K 26 Feb 2026 2025 FY
Q4 2024 $41,161,000 -$2,137,000 -4.9% 31 Dec 2024 10-K 26 Feb 2026 2025 FY
Q4 2023 $43,298,000 -$13,269,000 -23% 31 Dec 2023 10-K 26 Feb 2026 2025 FY
Q4 2022 $56,567,000 +$1,482,000 +2.7% 31 Dec 2022 10-K 26 Feb 2026 2025 FY
Q4 2021 $55,085,000 +$922,000 +1.7% 31 Dec 2021 10-K 19 Feb 2025 2024 FY
Q4 2020 $54,163,000 -$15,621,000 -22% 31 Dec 2020 10-K 21 Feb 2024 2023 FY
Q4 2019 $69,784,000 +$1,483,000 +2.2% 31 Dec 2019 10-K 22 Feb 2023 2022 FY
Q4 2018 $68,301,000 -$9,713,000 -12% 31 Dec 2018 10-K 25 Feb 2022 2021 FY
Q4 2017 $78,014,000 +$11,015,000 +16% 31 Dec 2017 10-K 24 Feb 2021 2020 FY
Q4 2016 $66,999,000 +$15,742,000 +31% 31 Dec 2016 10-K 02 Mar 2020 2019 FY
Q4 2015 $51,257,000 +$23,892,000 +87% 31 Dec 2015 10-K 01 Mar 2019 2018 FY
Q4 2014 $27,365,000 +$3,401,000 +14% 31 Dec 2014 10-K 28 Feb 2018 2017 FY
Q4 2013 $23,964,000 +$13,092,000 +120% 31 Dec 2013 10-K 01 Mar 2017 2016 FY
Q4 2012 $10,872,000 +$1,038,000 +11% 31 Dec 2012 10-K 26 Feb 2016 2015 FY
Q4 2011 $9,834,000 +$866,000 +9.7% 31 Dec 2011 10-K 02 Mar 2015 2014 FY
Q4 2010 $8,968,000 31 Dec 2010 10-K 03 Mar 2014 2013 FY
* An asterisk sign (*) next to the value indicates that the value is likely invalid.