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Spero Therapeutics, Inc. (SPRO) Operating Loss Carryforwards

2.8 / 5 stars · 68/120 Roast Me

Spero Therapeutics, Inc. Operating Loss Carryforwards

Spero Therapeutics, Inc. (SPRO) had Operating Loss Carryforwards of $226.10 million as of 2025-12-31, per its 10-K filed 2026-03-26.

Financial Statements › Notes › Income Taxes

us-gaap:OperatingLossCarryforwards · last filed 2026-03-26

  • 2025-12-31: Operating Loss Carryforwards $226.10M.
  • 2024-12-31: Operating Loss Carryforwards $165.20M.
  • 2023-12-31: Operating Loss Carryforwards $94.70M.
Period endOperating Loss Carryforwards
2025-12-31$226.10M
10-K · filed 2026-03-26
2024-12-31$165.20M
10-K · filed 2025-03-27
2023-12-31$94.70M
10-K · filed 2024-03-13

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