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NASDAQ:SPRO

Spero Therapeutics (SPRO) Stock Price, News & Analysis

Spero Therapeutics logo
$1.24 -0.03 (-1.98%)
As of 03:57 PM Eastern
This is a fair market value price provided by Massive. Learn more.

About Spero Therapeutics Stock (NASDAQ:SPRO)

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Key Stats

Today's Range
$1.23
$1.28
50-Day Range
$1.15
$2.98
52-Week Range
$1.08
$3.08
Volume
282,383 shs
Average Volume
877,655 shs
Market Capitalization
$71.51 million
P/E Ratio
5.15
Dividend Yield
N/A
Price Target
N/A
Consensus Rating
Reduce

Company Overview

Spero Therapeutics is a clinical‐stage biopharmaceutical company focused on the discovery and development of novel therapies to address multidrug‐resistant bacterial infections. Headquartered in Boston, Massachusetts, the company aims to advance a pipeline of oral and intravenous antibiotic candidates designed to treat serious infectious diseases that pose significant public health challenges.

The company’s lead candidate, tebipenem HBr, is an oral carbapenem antibiotic being developed for the treatment of complicated urinary tract infections caused by resistant Gram‐negative pathogens. In parallel, Spero is advancing SPR720, an oral investigational agent targeting nontuberculous mycobacterial lung infections, and SPR206, a polymyxin derivative intended for intravenous use against a broad spectrum of Gram‐negative bacteria. Together, these programs seek to offer new options where few effective treatments currently exist.

Spero conducts clinical trials in North America and internationally, collaborating with academic institutions, hospitals and health authorities to evaluate safety and efficacy across diverse patient populations. The company’s efforts are supported by partnerships with research organizations and regulatory agencies, reflecting a commitment to global health initiatives aimed at reducing the burden of antimicrobial resistance.

Under the leadership of President and Chief Executive Officer Ankit Mahadevia, M.D., Spero Therapeutics leverages experience in infectious disease drug development and regulatory strategy. The management team and board of directors include seasoned professionals from both pharmaceutical and biotechnology industries, guiding the company through late‐stage clinical development and toward potential regulatory approvals and commercialization.

AI Generated. May Contain Errors.

Spero Therapeutics Stock Analysis - MarketRank™

See Top-Rated MarketRank™ Stocks
20th Percentile Overall Score

SPRO MarketRank™: 

Spero Therapeutics scored higher than 20% of companies evaluated by MarketBeat, and ranked 810th out of 903 stocks in the healthcare sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation.

  • Consensus Rating

    Spero Therapeutics has received a consensus rating of Reduce. The company's average rating score is 1.50, and is based on no strong buy ratings, no buy ratings, 1 hold rating, and 1 sell rating.

  • Amount of Analyst Coverage

    Spero Therapeutics has only been the subject of 1 research reports in the past 90 days.

  • Read more about Spero Therapeutics' stock forecast and price target.
  • Price to Earnings Ratio vs. the Market

    The P/E ratio of Spero Therapeutics is 5.19, which means that it is trading at a less expensive P/E ratio than the market average P/E ratio of about 39.47.

  • Price to Earnings Ratio vs. Sector

    The P/E ratio of Spero Therapeutics is 5.19, which means that it is trading at a less expensive P/E ratio than the Healthcare sector average P/E ratio of about 269.93.

  • Price to Book Value per Share Ratio

    Spero Therapeutics has a P/B Ratio of 1.19. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.

  • Read more about Spero Therapeutics' valuation and earnings.
  • Percentage of Shares Shorted

    3.76% of the float of Spero Therapeutics has been sold short.
  • Short Interest Ratio / Days to Cover

    Spero Therapeutics has a short interest ratio ("days to cover") of 1.28, which is generally considered an acceptable ratio of short interest to trading volume.
  • Change versus previous month

    Short interest in Spero Therapeutics has recently decreased by 26.21%, indicating that investor sentiment is improving significantly.
  • Dividend Yield

    Spero Therapeutics does not currently pay a dividend.

  • Dividend Growth

    Spero Therapeutics does not have a long track record of dividend growth.

  • News Coverage This Week

    MarketBeat has tracked 4 news articles for Spero Therapeutics this week, compared to 1 article on an average week.
  • Search Interest

    Only 1 people have searched for SPRO on MarketBeat in the last 30 days. This is a decrease of -94% compared to the previous 30 days.
  • MarketBeat Follows

    Only 3 people have added Spero Therapeutics to their MarketBeat watchlist in the last 30 days. This is a decrease of 0% compared to the previous 30 days.
  • Insider Buying vs. Insider Selling

    In the past three months, Spero Therapeutics insiders have not sold or bought any company stock.

  • Percentage Held by Insiders

    2.90% of the stock of Spero Therapeutics is held by insiders.

  • Percentage Held by Institutions

    25.60% of the stock of Spero Therapeutics is held by institutions.

  • Read more about Spero Therapeutics' insider trading history.
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SPRO Stock News Headlines

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Spero Therapeutics inks major CD40L and royalty deals
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SPRO Stock Analysis - Frequently Asked Questions

Spero Therapeutics' stock was trading at $2.33 at the start of the year. Since then, SPRO stock has decreased by 46.6% and is now trading at $1.2450.

Spero Therapeutics, Inc. (NASDAQ:SPRO) announced its quarterly earnings data on Wednesday, May, 13th. The company reported ($0.13) earnings per share (EPS) for the quarter, topping analysts' consensus estimates of ($0.18) by $0.05. The business earned $0.26 million during the quarter, compared to the consensus estimate of $0.26 million. Spero Therapeutics had a net margin of 24.90% and a trailing twelve-month return on equity of 35.58%.

Spero Therapeutics (SPRO) raised $82 million in an initial public offering on Thursday, November 2nd 2017. The company issued 5,500,000 shares at a price of $14.00-$16.00 per share. BofA Merrill Lynch, Cowen and Stifel acted as the underwriters for the IPO and Oppenheimer & Co. was co-manager.

Top institutional investors of Spero Therapeutics include Alphabet Inc. (1.54%), BlackRock Inc. (1.03%), GSA Capital Partners LLP (0.49%) and Global Retirement Partners LLC (0.04%). Insiders that own company stock include Sath Shukla, Esther Rajavelu, Ankit Mahadevia, Kamal Hamed and Timothy Keutzer.
View institutional ownership trends
.

Shares of SPRO stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services.

Based on aggregate information from My MarketBeat watchlists, some other companies that Spero Therapeutics investors own include Invesco QQQ (QQQ), SPDR S&P 500 ETF Trust (SPY), SPDR Dow Jones Industrial Average ETF Trust (DIA), Meta Platforms (META), NVIDIA (NVDA), Editas Medicine (EDIT) and Advanced Micro Devices (AMD).

Company Calendar

Last Earnings
5/13/2026
Today
8/10/2026
Next Earnings (Estimated)
8/12/2026
Fiscal Year End
12/31/2026

Industry, Sector and Symbol

Stock Exchange
NASDAQ
Industry
Pharmaceuticals
Sub-Industry
Pharmaceuticals
Current Symbol
NASDAQ:SPRO
CIK
1701108
Fax
N/A
Employees
150
Year Founded
2013

Profitability

EPS (Trailing Twelve Months)
$0.24
Trailing P/E Ratio
5.15
Forward P/E Ratio
N/A
P/E Growth
N/A
Net Income
$8.57 million
Net Margins
24.90%
Pretax Margin
25.33%
Return on Equity
35.58%
Return on Assets
24.95%

Debt

Debt-to-Equity Ratio
N/A
Current Ratio
10.50
Quick Ratio
10.50

Sales & Book Value

Annual Sales
$66.80 million
Price / Sales
1.07
Cash Flow
$0.15 per share
Price / Cash Flow
8.28
Book Value
$1.05 per share
Price / Book
1.18

Miscellaneous

Outstanding Shares
57,900,000
Free Float
56,222,000
Market Cap
$71.51 million
Optionable
Optionable
Beta
1.55

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This page (NASDAQ:SPRO) was last updated on 8/10/2026 by MarketBeat.com Staff.
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