{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-256865","form_type":"8-K/A","ticker":"SPRO","cik":"0001701108","company_name":"Spero Therapeutics, Inc.","filed_at":"2023-10-16T23:59:59+00:00","discovered_at":"2026-05-14T18:03:30.095663+00:00","generated_at":"2026-06-09T23:25:57.330346+00:00","sec_items":["5.03","5.07","9.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Spero Therapeutics corrects 8-K: charter amendment was not approved; files Certificate of Correction","bullets":["Amendment No. 1 to 8-K discloses tabulation error in October 5 annual meeting vote.","Charter amendment proposals (officer exculpation, federal forum clause) did not receive required votes.","Certificate of Correction filed Oct 16, 2023 to undo previously recorded charter amendment.","Company states charter remains unchanged as a result of the correction."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-256865","json":"https://secwatch.observer/filing/0001193125-23-256865.json","markdown":"https://secwatch.observer/filing/0001193125-23-256865.md","text":"https://secwatch.observer/filing/0001193125-23-256865.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1701108/000119312523256865/0001193125-23-256865-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1701108/000119312523256865/d563868d8ka.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-09T23:25:57.330346+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"83284ff4c95c53b1e7c935253a44a83ac51492cc","claim":"Spero Therapeutics, Inc.: Filed a Certificate of Correction to undo the previously filed Charter Amendment due to a tabulation error, restoring the charter to its prior state (effective 2023-10-16).","evidence_excerpt":"On October 16, 2023, the Company filed the Certificate of Correction with the Delaware Secretary to undo the Charter Amendment.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1701108/000119312523256865/0001193125-23-256865-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"charter amendment"},{"label":"Effective","value":"2023-10-16"}],"fact_type":"governance_change"},{"claim_id":"ff3588f56426f8e010b5bec56b93cc5fc072e420","claim":"Spero Therapeutics, Inc. shareholders rejected Amend the Charter to reflect new Delaware law provisions regarding officer exculpation and to add a federal forum selection clause.","evidence_excerpt":"The Charter Amendment Proposals did not receive the necessary stockholder votes and were not approved.","evidence_source":"SEC 8-K Item 5.07","evidence_url":"https://www.sec.gov/Archives/edgar/data/1701108/000119312523256865/0001193125-23-256865-index.htm","confidence":0.7,"family_label":"Shareholder Votes","details":[{"label":"Proposal","value":"charter amendment"},{"label":"Outcome","value":"failed"}],"fact_type":"shareholder_vote"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}