Deferred Tax Assets, Operating Loss Carryforwards of IONIS PHARMACEUTICALS INC from 31 Dec 2010 to 31 Dec 2025

Taxonomy & unit
us-gaap: USD
Description
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.
Summary
IONIS PHARMACEUTICALS INC quarterly Deferred Tax Assets, Operating Loss Carryforwards in USD history and change rate from 31 Dec 2010 to 31 Dec 2025.
  • IONIS PHARMACEUTICALS INC Deferred Tax Assets, Operating Loss Carryforwards for the quarter ending 31 Dec 2025 was $290,851,000, a 203% increase year-over-year.
Source SEC data
View on sec.gov
Deferred Tax Assets, Operating Loss Carryforwards, Quarterly (USD)
Deferred Tax Assets, Operating Loss Carryforwards, YoY Quarterly Change (%)

IONIS PHARMACEUTICALS INC Quarterly Deferred Tax Assets, Operating Loss Carryforwards (USD)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q4 2025 $290,851,000 +$195,000,000 +203% 31 Dec 2025 10-K 26 Feb 2026 2025 FY
Q4 2024 $95,851,000 +$17,887,000 +23% 31 Dec 2024 10-K 26 Feb 2026 2025 FY
Q4 2023 $77,964,000 -$9,838,000 -11% 31 Dec 2023 10-K 19 Feb 2025 2024 FY
Q4 2022 $87,802,000 +$2,202,000 +2.6% 31 Dec 2022 10-K 21 Feb 2024 2023 FY
Q4 2021 $85,600,000 +$1,919,000 +2.3% 31 Dec 2021 10-K 22 Feb 2023 2022 FY
Q4 2020 $83,681,000 +$63,490,000 +314% 31 Dec 2020 10-K 25 Feb 2022 2021 FY
Q4 2019 $20,191,000 -$69,526,000 -77% 31 Dec 2019 10-K 24 Feb 2021 2020 FY
Q4 2018 $89,717,000 -$63,858,000 -42% 31 Dec 2018 10-K 02 Mar 2020 2019 FY
Q4 2017 $153,575,000 -$40,797,000 -21% 31 Dec 2017 10-K 01 Mar 2019 2018 FY
Q4 2016 $194,372,000 -$24,121,000 -11% 31 Dec 2016 10-K 28 Feb 2018 2017 FY
Q4 2015 $218,493,000 -$13,161,000 -5.7% 31 Dec 2015 10-K 01 Mar 2017 2016 FY
Q4 2014 $231,654,000 -$28,808,000 -11% 31 Dec 2014 10-K 26 Feb 2016 2015 FY
Q4 2013 $260,462,000 +$15,923,000 +6.5% 31 Dec 2013 10-K 02 Mar 2015 2014 FY
Q4 2012 $244,539,000 +$49,140,000 +25% 31 Dec 2012 10-K 03 Mar 2014 2013 FY
Q4 2011 $195,399,000 +$46,711,000 +31% 31 Dec 2011 10-K 28 Feb 2013 2012 FY
Q4 2010 $148,688,000 31 Dec 2010 10-K 29 Feb 2012 2011 FY
* An asterisk sign (*) next to the value indicates that the value is likely invalid.