KeifeRx vs Spero Therapeutics
KeifeRx
KeifeRx is a biopharmaceutical company finding disease-modifying treatments for neurodegenerative diseases. #HoyaSaxa
7 employees · est. 2019 · Mclean, United States
Spero Therapeutics
Clinical-stage biotech company focused on rare diseases and diseases with high unmet need
44 employees · est. 2013 · Cambridge, United States
Spero Therapeutics is the older company (2019 vs 2013); Spero Therapeutics is the larger of the two.
Side-by-Side Comparison
| Metric | KeifeRx | Spero Therapeutics |
|---|---|---|
| Founded | ||
| Founded | 2019 | 2013 older |
| Headquarters | ||
| Headquarters | Mclean, United States | Cambridge, United States |
| Employees | ||
| Employees | 7 | 44 larger |
| Industry | ||
| Industry | Biopharma, Biotechnology, Pharmaceutical | Biotechnology, Pharmaceutical |
| Funding Stage | ||
| Funding Stage | Series A | IPO |
| Total Funding | ||
| Total Funding | $6.00M | $374.60M |
| Funding Rounds | ||
| Funding Rounds | 1 | 12 |
| Services | ||
| Services | development of kinase inhibitors, clinical trials for neurodegenerative disease treatments, collaborative research for drug development | Development of Oral Carbapenem Antibiotics, Drug Pipeline for Rare and MDR Infections, Clinical Trial Execution, Partnership Development |
| Target Customers | ||
| Target Customers | dementia patients, patients with neurodegenerative diseases, healthcare providers in neurology, clinical researchers | Patients with Complicated Urinary Tract Infections, Patients with Pyelonephritis, Healthcare Providers, Pharmaceutical Collaborators |
| Taxonomy | ||
| Taxonomy | BiopharmaceuticalClinical-stageNeurodegenerative DiseasesDisease-modifying TreatmentsTyrosine Kinase InhibitorsLow Dose Therapy +8 | BiopharmaceuticalClinical-stageBiotech CompanyBacterial InfectionsMulti-drug ResistantRare Diseases +9 |
| Website | ||
| Website | keiferx.com | sperotherapeutics.com |
About KeifeRx
KeifeRx, founded in 2019, is an emerging biopharmaceutical company headquartered in the United States. The company specializes in developing innovative treatments for neurodegenerative and immune diseases using novel tyrosine kinase inhibitors (TKIs). By focusing on low-dose, orally delivered soluti...
About Spero Therapeutics
Spero Therapeutics, founded in 2013 and headquartered in the United States, is a multi-asset, clinical-stage biotech company specializing in treatments for multidrug-resistant bacterial infections and rare diseases. With a strong focus on addressing antibiotic resistance, the company is carving out...
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Compiled from the BounceWatch company index. We last looked at KeifeRx on 11 Mar 2026, and Spero Therapeutics on 9 Jun 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
