
SPERO THERAPEUTICS INC
SPRONASDAQTrading Snapshot
- Day Range
- $1.20 β $1.24
- 52-Week Range
- $1.08 β $3.08
- Volume
- $2.03B
- Avg Volume
- $1.51B
- Shares Outstanding
- 57.9M
- Next Earnings
- Oct 25, 2026
Fundamentals Snapshot
- Annual Revenue
- $60M
- Last Q Revenue
- $258,000
- P/E Ratio
- 4.5
- P/S Ratio
- 1.3x
- EPS (TTM)
- $0.27
- Dividend Yield
- 0.00%
Why Investors Own SPRO
- βHigh-growth profile β revenue up +40.5% YoY with expanding US Equity exposure.
- βHealthy economics β 43% gross margin and 7% free-cash-flow margin.
- βNew products and segments could unlock additional revenue streams.
Execution delays, intensifying competition, and valuation compression if growth decelerates.
Financial Trends
About SPERO THERAPEUTICS INC
Spero Therapeutics, Inc. is a biopharmaceutical firm in the clinical development stage, primarily focused on discovering, advancing, and commercializing innovative treatments for multi-drug resistant (MDR) bacterial infections and rare diseases within the United States. The company's pipeline includes several key therapeutic candidates: tebipenem pivoxil hydrobromide (HBr), an oral carbapenem-class antibiotic designed to address complicated urinary tract infections (cUTIs), including pyelonephritis, in adult patients. SPR206, an intravenously administered agent specifically developed to combat MDR Gram-negative bacterial infections in hospital environments. SPR720, an oral antibiotic targeting non-tuberculous mycobacterial (NTM) pulmonary disease. Spero Therapeutics has also forged several strategic alliances: A licensing agreement with Meiji Seika Pharma Co., Ltd. supports the ongoing development of tebipenem HBr. A separate licensing deal with Everest Medicines grants rights for the development, manufacturing, and commercialization of SPR206 across Greater China, South Korea, and various Southeast Asian nations. The company collaborates with the Bill & Melinda Gates Medical Research Institute to advance SPR720 for treating lung infections caused by Mycobacterium tuberculosis. Furthermore, a licensing agreement with Vertex Pharmaceuticals Incorporated covers patents associated with SPR720 and its active metabolite, SPR719. Founded in 2013, Spero Therapeutics maintains its corporate headquarters in Cambridge, Massachusetts.
Otter Score Breakdown
βAnalyst Ratings
βLatest News & Updates

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Spero Therapeutics: 'Buy' On Utebzi Royalty Deal For Funding And SP001 In-Licensing
Spero Therapeutics (SPRO) gets a Buy on immunology pivot, FDA-approved Utebzi and $105M royalty deal funding SP001. Click here to read my latest analysis.

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Spero Therapeutics Announces $105M In Non-Recourse Non-Dilutive Royalty Financing With KKR's Healthcare Royalty
Financing supports Phase 2 development of SP001, Speroβs first immunology drug candidate, in-licensed from Innovent BiologicsTransaction unlocks immediate value from future Utebzi (tebipenem pivoxil) milestones and
Spero Therapeutics Enters License Agreement With Innovent Biologics For Exclusive Rights To Develop, Research, Manufacture, And Commercialize SP001 Globally Ex-China
Under the terms of the agreement, Spero will receive exclusive global rights, excluding Greater China, to develop, research, manufacture, and commercialize SP001 (IBI355)Innovent will receive an upfront payment, and is