Spero Therapeutics, Inc. (SPRO)

NASDAQ

$1.19

$-0.03

(-2.46%)

Regular Market

Spero Therapeutics, Inc. (SPRO) Live Price Chart

Last updated: ⁦2026-10-21 17:21:00⁩. Prices reflect the latest regular market data. Stock price data is sourced from Massive.

Summary

Spero Therapeutics, Inc. (SPRO) operates in the PHARMACEUTICAL PREPARATIONS sector and is listed on NASDAQ. The stock is currently priced at $1.19, with a market capitalization of $65.22M and a P/E ratio of 9.62. Over the past 52 weeks, its price has ranged from $1.08 to $3.08. This page covers its latest market performance, valuation, price trends and company information.

Key Market Data

Market Cap	$65.22M
Open	$1.21
Day's High	$23.64
Day's Low	$0.51
Previous Close	$1.22
Volume	108.55K
Average Volume	898.87K
P/E Ratio	9.62
52-Week High	$3.08
52-Week Low	$1.08
Dividend Yield	--
Earnings Date	--

Spero Therapeutics, Inc. (SPRO) Stock Price Today

Spero Therapeutics, Inc. (SPRO) is currently trading at $1.19 as of 2026-10-21 17:19:00, down 2.87% ($0.03) from the previous close of $1.22

During today's regular trading session, SPRO has traded between $0.51 and $23.64, with a trading volume of 108.55K shares. The current price is near the lower end of today's range.

Spero Therapeutics, Inc. (SPRO) 7-Day Stock Price Change

Over the past seven days, Spero Therapeutics, Inc. (SPRO) moved from $1.18 to $1.19, representing a gain of 0.42% ($0.01).

The stock traded between $1.09 and $1.24 during the period. The latest price is near the middle of the 7-day range, indicating range-bound.

The average daily volume was 408.83 thousand shares, down versus the previous seven-day period, indicating lower trading activity.

SPRO 52-Week Price Position

Position in Range: 5.2%

52W Low$1.08

52W High$3.08

SPRO is currently trading at $1.19, placing it 5.2% of the way from its 52-week low of $1.08 to its 52-week high of $3.08. This percentage reflects the stock's relative position within its 52-week trading range, not its valuation or future performance.

What is Spero Therapeutics, Inc. (SPRO)?

Spero Therapeutics Inc is a clinical-stage biopharmaceutical firm. It focuses on identifying, developing, and commercializing novel treatments for MDR (Multi-drug-resistant) bacterial infections and rare diseases. The company's product candidate, tebipenem pivoxil hydrobromide or tebipenem HBr, is designed to be an oral carbapenem-class antibiotic for use in adults to treat MDR Gram-negative infections. It is also developing SPR720, a novel oral antibiotic designed for the treatment of a rare, orphan disease caused by pulmonary non-tuberculous mycobacterial infections, or NTM disease. It is also focused on SPR206, a next-generation polymyxin investigational product candidate being developed as an IV-administered medicine to treat MDR Gram-negative infections in the hospital.

Spero Therapeutics, Inc. Information

Industry	PHARMACEUTICAL PREPARATIONS
Employees	25
Exchange	NASDAQ
Company Website	https://www.sperotherapeutics.com

How to Buy Spero Therapeutics, Inc. (SPRO) Stock on MEXC

Eligible investors can buy real shares of Spero Therapeutics, Inc. (SPRO) through MEXC RealStocks. Follow these three steps to open a RealStocks account, transfer USDT, and place a US stock order.

Step 1: Open and Verify Your RealStocks Account

Log in to the MEXC App, go to Trade → RealStocks, and select Open Account. Complete the required account-opening and identity verification process with MEXC's partner licensed broker.

Step 2: Transfer USDT to Your RealStocks Account

Go to Wallets → RealStocks and transfer USDT from your Spot Account to your RealStocks Account. RealStocks are quoted in USD, while account funding can be completed using USDT.

Step 3: Search for SPRO and Place Your Order

Open the RealStocks trading page and search for SPRO. Select a market or limit order, enter the price and quantity as required, review the order details, and submit your order. Once filled, the corresponding real shares will be held in your RealStocks Account.

Frequently Asked Questions (FAQ)

1.What is Spero Therapeutics, Inc. (SPRO) stock price today?

Spero Therapeutics, Inc. (SPRO) is currently trading at $ 1.19, down 2.87% ($0.03) from the previous close of $ 1.22. Intraday prices update in real time during regular trading hours.

2.Is SPRO stock going up or down today?

As of 2026-10-21 17:19:00, SPRO is trading at $ 1.19, down 2.87% ($0.03) from its previous close of $ 1.22. The stock has traded between $ 0.51 and $ 23.64 during today’s regular session. Past price movements do not guarantee future results.

3.What is SPRO pre-market price?

As of 2026-10-21 17:19:00, SPRO is trading at $ 1.20 in pre-market trading, down 1.64% ($0.02) from the previous close of $ 1.22. Pre-market prices reflect trading activity before the regular session opens and may experience lower liquidity and higher volatility.

4.What is SPRO after-hours price?

As of 2026-10-21 17:19:00, SPRO is trading at $ 1.21 in after-hours trading, down 1.15% ($0.01) from the regular-session close of $ 1.22. After-hours prices may differ from the regular session’s opening price due to lower liquidity and wider bid-ask spreads.

5.Is SPRO stock trading now?

SPRO trades on the NASDAQ exchange during regular hours, Monday through Friday, 9:30 AM to 4:00 PM ET, excluding public holidays. Pre-market and after-hours trading are also available through select brokers outside these hours.

6.Where does SPRO sit relative to its 52-week high and low?

Over the past 52 weeks, SPRO has traded between a low of $ 1.08 and a high of $ 3.08. At $ 1.19, the stock is positioned 5.2% of the way from its 52-week low to its 52-week high, providing context for its current price within the one-year trading range.

7.What sector is Spero Therapeutics, Inc. in?

Spero Therapeutics, Inc. (SPRO) operates in the PHARMACEUTICAL PREPARATIONS sector. Sector classification helps investors compare it with companies exposed to similar market trends and competitive conditions.

8.What is Spero Therapeutics, Inc.'s market capitalization and where is it listed?

Spero Therapeutics, Inc. is listed on the NASDAQ exchange with a market capitalization of $ 65.22M. Market cap reflects the total market value of all outstanding shares and is commonly used to classify stocks by size.

9.How is SPRO valued in terms of P/E ratio and EPS?

SPRO trades at a P/E ratio of 9.62, based on trailing-twelve-month EPS of $ 0.13. P/E ratio compares the stock price to earnings per share and is a common starting point for assessing valuation relative to peers.

10.Does Spero Therapeutics, Inc. pay a dividend?

Spero Therapeutics, Inc. pays an indicated annual cash dividend of $ 0.00 per share, with a current dividend yield of 0.00% based on the latest share price. Dividend policies are subject to change at the board's discretion.