Unrecognized Tax Benefits of ALNYLAM PHARMACEUTICALS, INC. from 31 Dec 2010 to 31 Dec 2025

Taxonomy & unit
us-gaap: USD
Description
Amount of unrecognized tax benefits.
Summary
ALNYLAM PHARMACEUTICALS, INC. quarterly Unrecognized Tax Benefits in USD history and change rate from 31 Dec 2010 to 31 Dec 2025.
  • ALNYLAM PHARMACEUTICALS, INC. Unrecognized Tax Benefits for the quarter ending 31 Dec 2025 was $77,969,000, a 31% increase year-over-year.
Source SEC data
View on sec.gov
Unrecognized Tax Benefits, Quarterly (USD)
Unrecognized Tax Benefits, YoY Quarterly Change (%)

ALNYLAM PHARMACEUTICALS, INC. Quarterly Unrecognized Tax Benefits (USD)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q4 2025 $77,969,000 +$18,598,000 +31% 31 Dec 2025 10-K 12 Feb 2026 2025 FY
Q4 2024 $59,371,000 +$59,371,000 31 Dec 2024 10-K 12 Feb 2026 2025 FY
Q4 2023 $0 31 Dec 2023 10-K 12 Feb 2026 2025 FY
Q4 2019 $305,000 +$305,000 31 Dec 2019 10-K 13 Feb 2020 2019 FY
Q4 2018 $0 $0 31 Dec 2018 10-K 13 Feb 2020 2019 FY
Q4 2017 $0 31 Dec 2017 10-K 13 Feb 2020 2019 FY
Q4 2011 $128,000 -$300,000 -70% 31 Dec 2011 10-K 20 Feb 2014 2013 FY
Q4 2010 $428,000 31 Dec 2010 10-K 19 Feb 2013 2012 FY
* An asterisk sign (*) next to the value indicates that the value is likely invalid.