Spero Therapeutics, Inc. — Investor Relations & Filings
Filings indexed
481
across all filing types
Latest filing
2026-05-13
Regulatory Filings
Country
US
United States of America
Listing
US
SPRO
Spero Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections. The company's primary mission is to address the significant unmet medical needs caused by antibiotic resistance. Its pipeline includes tebipenem HBr, an oral carbapenem antibiotic candidate for the treatment of complicated urinary tract infections (cUTIs), which has completed a Phase 3 trial. Spero Therapeutics leverages its expertise in chemistry and microbiology, alongside strategic partnerships, to advance its portfolio of innovative therapies for serious infections.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 8-K - Spero Therapeutics, Inc. (0001701108) (Filer) | 2026-05-13 | English | |
| ARS - Spero Therapeutics, Inc. (0001701108) (Filer) | 2026-04-27 | English | |
| DEF 14A - Spero Therapeutics, Inc. (0001701108) (Filer) | 2026-04-27 | English | |
| 4 - Spero Therapeutics, Inc. (0001701108) (Issuer) | 2026-02-10 | English | |
| 4 - Spero Therapeutics, Inc. (0001701108) (Issuer) | 2026-02-10 | English | |
| 4 Filing | 2026-02-05 | English |
Browse filings by year
10 years| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
8 filings
| |||||
| 45759884 | 8-K - Spero Therapeutics, Inc. (0001701108) (Filer) | 2026-05-13 | English | ||
| 37630275 | ARS - Spero Therapeutics, Inc. (0001701108) (Filer) | 2026-04-27 | English | ||
| 37623767 | DEF 14A - Spero Therapeutics, Inc. (0001701108) (Filer) | 2026-04-27 | English | ||
| 19120173 | 4 - Spero Therapeutics, Inc. (0001701108) (Issuer) | 2026-02-10 | English | ||
| 19026849 | 4 - Spero Therapeutics, Inc. (0001701108) (Issuer) | 2026-02-10 | English | ||
| 31363961 | 4 Filing | 2026-02-05 | English | ||
| 31363945 | 4 Filing | 2026-02-04 | English | ||
| 31363924 | 8-K Filing | 2026-01-30 | English | ||
|
2025
7 filings
| |||||
| 13016869 | 8-K | 2025-12-19 | English | ||
| 13016870 | 8-K | 2025-11-13 | English | ||
| 13016873 | 10-Q | 2025-11-13 | English | ||
| 13016872 | 4 | 2025-11-12 | English | ||
| 13016875 | 4 | 2025-09-03 | English | ||
| 13016871 | 4 | 2025-09-03 | English | ||
| 13016874 | Major Shareholding Notification 2025 | 2025-08-14 | English | ||
Market data
Market data not available
Last price
Market cap
volume
Day range
today
52-week range
trailing
Price history
Peer group · Manufacture of pharmaceuticals, medicinal chemical and botanical products
| Company | Ticker | Country | Sector |
|---|---|---|---|
|
13260917 Canada Inc.
Biotech developing oral small molecules to restore muscle s…
|
MSCL | CA | Manufacturing |
|
1608557 Ontario Inc.
Biopharmaceutical company dedicated to R&D, discovery, and …
|
OTROQ | CA | Manufacturing |
|
3B BlackBio Dx Limited
Develops molecular diagnostic kits for oncology, infectious…
|
3BBLACKBIO | IN | Manufacturing |
|
3D Medicines Inc.
Commercial-stage biopharma specializing in next-generation …
|
1244 | HK | Manufacturing |
|
3SBio Inc.
Biopharmaceutical enterprise specializing in R&D, productio…
|
1530 | KY | Manufacturing |
|
4BASEBIO PLC
Manufactures GMP-grade synthetic DNA for next-generation th…
|
4BB | GB | Manufacturing |
|
4D Molecular Therapeutics, Inc.
Develops genetic medicines using AAV vectors for ophthalmol…
|
FDMT | US | Manufacturing |
|
4Front Ventures Corp.
Vertically integrated cannabis operator managing cultivatio…
|
FFNT | CA | Manufacturing |
|
4SC AG
Biopharmaceutical company with no products under developmen…
|
VSC | DE | Manufacturing |
|
60 DEGREES PHARMACEUTICALS, INC.
Develops and commercializes medicines for infectious diseas…
|
SXTP | US | Manufacturing |
Spero Therapeutics, Inc. via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/34087/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=34087 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=34087 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
Full reference: API reference · OpenAPI schema
cURL
$ curl https://api.financialreports.eu/api/filings/?company=34087 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 34087}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for Spero Therapeutics, Inc. (id: 34087)"
Report missing filing
Can't find a specific document? Let us know and we'll add it within 24 hours.
We will notify you once the filing is added.
Report sent
Thank you. We will check the data and update it shortly.