{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-042785","form_type":"8-K","ticker":"SPRO","cik":"0001701108","company_name":"Spero Therapeutics, Inc.","filed_at":"2025-02-28T23:59:59+00:00","discovered_at":"2026-05-14T18:03:04.490858+00:00","generated_at":"2026-05-25T23:38:21.163351+00:00","sec_items":["3.01"],"event_type":"regulatory","sentiment":"negative","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Spero Therapeutics receives Nasdaq bid price deficiency notice; has until Aug 25, 2025 to regain compliance","bullets":["Nasdaq notified Spero on Feb 25, 2025 that its stock closed below $1.00 for 30 consecutive trading days.","Compliance deadline is August 25, 2025; cure requires closing at $1.00+ for 10 consecutive business days.","If not cured, Spero may transfer to Nasdaq Capital Market and consider reverse stock split for 180-day extension.","Stock continues trading on Nasdaq GS under SPRO; no immediate delisting effect."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-042785","json":"https://secwatch.observer/filing/0001193125-25-042785.json","markdown":"https://secwatch.observer/filing/0001193125-25-042785.md","text":"https://secwatch.observer/filing/0001193125-25-042785.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1701108/000119312525042785/0001193125-25-042785-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1701108/000119312525042785/d924647d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-25T23:38:21.163351+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}