Spero Therapeutics, Inc. Deferred Tax Assets, Operating Loss Carryforwards
Spero Therapeutics, Inc. (SPRO) had Deferred Tax Assets, Operating Loss Carryforwards of $60.31 million as of 2025-12-31, per its 10-K filed 2026-03-26.
Financial Statements › Notes › Income Taxes › Components of Deferred Tax Assets and Liabilities › Deferred Tax Assets, Net › Deferred Tax Assets, Net of Valuation Allowance › Deferred Tax Assets, Gross › Deferred Tax Assets, Operating Loss Carryforwards, Components
us-gaap:DeferredTaxAssetsOperatingLossCarryforwards · last filed 2026-03-26
- 2025-12-31: Deferred Tax Assets, Operating Loss Carryforwards $60.31M.
- 2024-12-31: Deferred Tax Assets, Operating Loss Carryforwards $43.31M; Deferred Tax Assets, Operating Loss Carryforwards as first filed $42.31M.
- 2023-12-31: Deferred Tax Assets, Operating Loss Carryforwards $25.65M.
- 2022-12-31: Deferred Tax Assets, Operating Loss Carryforwards $78.62M.
| Period end | Deferred Tax Assets, Operating Loss Carryforwards | Deferred Tax Assets, Operating Loss Carryforwards as first filed |
|---|---|---|
| 2025-12-31 | $60.31M 10-K · filed 2026-03-26 | |
| 2024-12-31 | $43.31M 10-K · filed 2026-03-26 | $42.31M 10-K · filed 2025-03-27 |
| 2023-12-31 | $25.65M 10-K · filed 2025-03-27 | |
| 2022-12-31 | $78.62M 10-K · filed 2024-03-13 | |
| 2021-12-31 | $83.85M 10-K · filed 2023-03-30 | |
| 2020-12-31 | $63.61M 10-K · filed 2022-03-31 | |
| 2019-12-31 | $44.24M 10-K · filed 2021-03-11 | |
| 2018-12-31 | $29.02M 10-K · filed 2020-03-16 | |
| 2017-12-31 | $21.75M 10-K · filed 2019-03-14 | |
| 2016-12-31 | $16.41M 10-K · filed 2018-04-02 |
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