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SPERO THERAPEUTICS INC

SPRONASDAQ
πŸ† #4292 by market capEarnings Nov 11US Equity
$1.20β–² $0.01 (+0.84%)
πŸŒ™ After hours$1.20β–² 0.00%Regular close Β· extended-hours price shown
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24hβ–² 0.8%
7dβ–Ό 5.1%
14dβ–² 6.7%
30dβ–Ό 2.4%
ytdβ–Ό 48.5%
1yβ–Ό 36.5%
🏦Market Cap
$69M
Small Cap
πŸ“ˆRevenue Growth (YoY)
+24.3%
Healthy
πŸ“ŠGross Margin
100.0%
High
πŸ’΅FCF Margin
45.6%
Strong
βš–οΈP/S Ratio
1.6x
Cheap
Otter Score
72
Fair

Trading Snapshot

Day Range
$1.18 – $1.22
52-Week Range
$1.08 – $3.08
Volume
$2.03B
Avg Volume
$1.51B
Shares Outstanding
57.9M
Next Earnings
Dec 13, 2026

Fundamentals Snapshot

Annual Revenue
$60M
Last Q Revenue
$16M
P/E Ratio
8.6
P/S Ratio
1.6x
EPS (TTM)
$0.13
Dividend Yield
0.00%
Dilution (1yr)
+9.9%

Why Investors Own SPRO

  • βœ“High-growth profile β€” revenue up +40.5% YoY with expanding US Equity exposure.
  • βœ“Healthy economics β€” 43% gross margin and 7% free-cash-flow margin.
  • βœ“New products and segments could unlock additional revenue streams.
⚠️ Key Risks

Execution delays, intensifying competition, and valuation compression if growth decelerates.

SPRO logo

SPERO THERAPEUTICS INC

SPRO
Financial Trends
RevenueThe total money the company brought in from sales, before subtracting any costs.
$60Mβ–² +24.3% YoY
Gross MarginOf every $1 of sales, how much is left after the direct cost of making the product/service. Higher = more efficient.
100.0%β–Ό βˆ’198.4% YoY
Operating IncomeProfit from the core business after operating costs, but before interest and taxes. Negative means the core business isn’t profitable yet.
βˆ’$24Kβ–Ό βˆ’100.0% YoY
Free Cash FlowCash left over after running the business and paying for equipment/capex. Negative means the company is burning cash.
βˆ’$13Mβ–Ό βˆ’46.2% YoY
Shares OutstandingHow many shares exist. Rising means the company is issuing more shares, which dilutes (shrinks) each existing owner’s slice.
59.4Mβ–² +9.9% YoY
Net CashCash minus total debt. Positive = more cash than debt (financially strong); negative = more debt than cash (net debt).
$37Mβ–Ό βˆ’$11M YoY
StockOtter Β· stockotter.space

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.

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Otter Score Breakdown

How it's scoredFive components, each rated 1–5β˜… and equally weighted (20%), averaged to a 0–100 score:πŸ’Ž Quality β€” gross marginπŸš€ Growth β€” revenue YoYβš–οΈ Valuation β€” P/S ratio⚑ Momentum β€” 30-day price changeπŸ’§ Dilution β€” 1-yr share issuance (buybacks score higher)
πŸ’ŽQualityβ˜…β˜…β˜…β˜…β˜…
πŸš€Growthβ˜…β˜…β˜…β˜…β˜…
βš–οΈValuationβ˜…β˜…β˜…β˜…β˜…
⚑Momentumβ˜…β˜…β˜…β˜…β˜…
πŸ’§Dilutionβ˜…β˜…β˜…β˜…β˜…
Overall Score
Fair
72/100

Analyst Ratings

β“˜
Consensus
Sell
6 analysts
Strong Buy0
Buy0
Hold3
Sell1
Strong Sell2
Ratings as of Sep 2026

Latest News & Updates

GlobeNewsWireΒ·26d ago

Spero Therapeutics Announces Inducement Grant Under Nasdaq Listing Rule 5635(c)(4)

CAMBRIDGE, Mass., Sept. 03, 2026 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on advancing next-generation medicines in immunology and inflammation, toda

GlobeNewsWireΒ·27d ago

Spero Therapeutics to Present at H.C. Wainwright 28th Annual Global Investment Conference

CAMBRIDGE, Mass., Sept. 02, 2026 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on advancing next-generation medicines in immunology and inflammation, toda

Seeking AlphaΒ·Aug 12

Spero Therapeutics, Inc. (SPRO) Q2 2026 Earnings Call Transcript

Spero Therapeutics, Inc. (SPRO) Q2 2026 Earnings Call Transcript

MarketBeatΒ·Aug 12

Spero Therapeutics Q2 Earnings Call Highlights

Spero Therapeutics NASDAQ: SPRO used its second-quarter update to outline a strategic shift toward immune-mediated diseases, supported by the FDA approval of Utebzi and a new licensing agreement for SP001, an antibody ca

GlobeNewsWireΒ·Aug 12

Spero Therapeutics Announces Second Quarter 2026 Operating Results and Provides Business Update

CAMBRIDGE, Mass., Aug. 12, 2026 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on advancing next-generation medicines in immunology and inflammation, today

GlobeNewsWireΒ·Aug 4

Spero Therapeutics to Report Second Quarter 2026 Financial Results and Provide Business Update on August 12, 2026

CAMBRIDGE, Mass., Aug. 04, 2026 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on advancing next-generation medicines in immunology and inflammation, today