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NASDAQ:SPRO

Spero Therapeutics (SPRO) Stock Price, News & Analysis

Spero Therapeutics logo
$1.20 -0.01 (-0.83%)
As of 08/28/2026 04:00 PM Eastern

About Spero Therapeutics Stock (NASDAQ:SPRO)

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Key Stats

Today's Range
$1.18
$1.22
50-Day Range
$1.15
$2.26
52-Week Range
$1.08
$3.08
Volume
312,274 shs
Average Volume
592,717 shs
Market Capitalization
$69.89 million
P/E Ratio
10.91
Dividend Yield
N/A
Price Target
N/A
Consensus Rating
Hold

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
32nd Percentile Overall Score

SPRO MarketRank™: 

Spero Therapeutics scored higher than 32% of companies evaluated by MarketBeat, and ranked 716th out of 913 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 Hold. The company's average rating score is 2.00, and is based on no strong buy ratings, no buy ratings, 2 hold ratings, and no sell ratings.

  • 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 10.91, which means that it is trading at a less expensive P/E ratio than the market average P/E ratio of about 45.16.

  • Price to Earnings Ratio vs. Sector

    The P/E ratio of Spero Therapeutics is 10.91, which means that it is trading at a less expensive P/E ratio than the Healthcare sector average P/E ratio of about 273.16.

  • Price to Book Value per Share Ratio

    Spero Therapeutics has a P/B Ratio of 1.58. 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

    2.56% 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 1.9, 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 4.46%, indicating that investor sentiment is improving.
  • Dividend Yield

    Spero Therapeutics does not currently pay a dividend.

  • Dividend Growth

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

  • Dividend Coverage

    The dividend payout ratio of Spero Therapeutics is 54.55%. This payout ratio is at a healthy, sustainable level, below 75%.

  • Read more about Spero Therapeutics' dividend.
  • News Sentiment

    Spero Therapeutics has a news sentiment score of 0.94. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This news sentiment score is similar to the average news sentiment of Healthcare companies.
  • News Coverage This Week

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

    1 people have searched for SPRO on MarketBeat in the last 30 days.
  • MarketBeat Follows

    4 people have added Spero Therapeutics to their MarketBeat watchlist in the last 30 days. This is an increase of 300% 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

Spero Therapeutics (SPRO) Q2 2026 Earnings Call Transcript
The cat is out the bag
Almost 80,000 tech jobs vanished in the first three months of 2026. Meta cut 14,000 roles, Microsoft offered separation packages to 8,500 workers, and Oracle is reportedly eliminating up to 30,000 positions. Goldman Sachs estimates 12,400 Americans are being financially displaced every single day. Analyst Porter Stansberry says the real driver runs deeper than AI - and two Nobel Prize winners have issued the same warning. He calls it the Final Displacement, and he's releasing a full investigation with specific companies to buy and sell before the next wave hits.tc pixel
See More Headlines

SPRO Stock Analysis - Frequently Asked Questions

Spero Therapeutics' stock was trading at $2.33 at the beginning of the year. Since then, SPRO stock has decreased by 48.5% and is now trading at $1.20.

Spero Therapeutics, Inc. (NASDAQ:SPRO) announced its quarterly earnings results on Wednesday, August, 12th. The company reported ($0.16) earnings per share (EPS) for the quarter, beating analysts' consensus estimates of ($0.17) by $0.01. Spero Therapeutics had a trailing twelve-month return on equity of 16.17% and a net margin of 24.90%.
Read the conference call transcript
.

Spero Therapeutics (SPRO) raised $82 million in an initial public offering (IPO) on Thursday, November 2nd 2017. The company issued 5,500,000 shares at $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 shareholders 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
8/12/2026
Today
8/30/2026
Next Earnings (Estimated)
11/12/2026
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)
$0.11
Trailing P/E Ratio
10.91
Forward P/E Ratio
N/A
P/E Growth
N/A
Net Income
$8.57 million
Net Margins
24.90%
Pretax Margin
16.26%
Return on Equity
16.17%
Return on Assets
12.57%

Debt

Debt-to-Equity Ratio
N/A
Current Ratio
6.12
Quick Ratio
6.12

Sales & Book Value

Annual Sales
$66.80 million
Price / Sales
1.05
Cash Flow
$0.15 per share
Price / Cash Flow
7.89
Book Value
$1.05 per share
Price / Book
1.14

Miscellaneous

Outstanding Shares
58,240,000
Free Float
56,546,000
Market Cap
$69.89 million
Optionable
Optionable
Beta
1.55

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This page (NASDAQ:SPRO) was last updated on 8/30/2026 by MarketBeat.com Staff.
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