Spero Therapeutics, Inc.
Spero Therapeutics, Inc. (SPRO) SEC Filings & 10-K Annual Reports
SEC EDGAR regulatory submissions (10-K, 10-Q, 8-K), latest forms, and full filing history — quick links to financials and earnings below.
SEC EDGAR · data.sec.gov · CIK 0001701108 · SPRO · NASDAQ · as of Jun 9, 2026
Filing snapshot
Source: SEC EDGAR (data.sec.gov) · CIK 0001701108 · Updated hourly · Not investment advice
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SEC Filing History
About SEC Filings & 10-K Annual Reports
Spero Therapeutics, Inc. (NASDAQ: SPRO) has submitted 495 documents to the U.S. Securities and Exchange Commission (SEC) since its IPO in 2017. As a Healthcare sector company with CIK 0001701108, all filings are publicly accessible via the EDGAR database at no cost.
The annual 10-K report is Spero Therapeutics, Inc.'s most comprehensive regulatory disclosure. The most recent Spero Therapeutics, Inc. 10-K was filed on 2026-03-26 for fiscal year ending 2026. Historical SPRO 10-K annual reports are available from 2017 through 2026.
Investors researching Spero Therapeutics, Inc. SEC filings can access 10-K annual reports, quarterly 10-Q reports, material event 8-K filings, and proxy statements directly from the links above. All documents are sourced from the official SEC EDGAR system.
Frequently Asked Questions
SPRO SEC Filings · 8 questionsSpero Therapeutics, Inc. (SPRO) SEC filings are publicly available on this page and on the official SEC EDGAR database at sec.gov. You can browse all 495 filings and access original documents at no cost. Spero Therapeutics, Inc.'s CIK is 0001701108.