Altimmune, Inc. (ALT)

NASDAQ

$2.23

$-0.07

(-3.04%)

After-Hours

Altimmune, Inc. (ALT) Live Price Chart

Last updated: ⁦2026-10-21 22:05:20⁩. Prices reflect the latest after-hours trading data. Stock price data is sourced from Massive.

Summary

Altimmune, Inc. (ALT) operates in the PHARMACEUTICAL PREPARATIONS sector and is listed on NASDAQ. The stock is currently priced at $2.23, with a market capitalization of $433.77M and a P/E ratio of --. Over the past 52 weeks, its price has ranged from $2.17 to $6.44. This page covers its latest market performance, valuation, price trends and company information.

Key Market Data

Market Cap	$433.77M
Open	$2.31
Day's High	$44,550.00
Day's Low	$1.51
Previous Close	$2.30
Volume	4.15M
Average Volume	4.32M
P/E Ratio	--
52-Week High	$6.44
52-Week Low	$2.17
Dividend Yield	--
Earnings Date	--

Altimmune, Inc. (ALT) After-Hours Stock Price

Altimmune, Inc. (ALT) is trading at $2.22 in after-hours trading as of 2026-10-21 22:01:00, down 3.43% ($0.08) from the regular-session close of $2.30.

After-hours trading shows how investors are pricing ALT after the regular session closes. The current after-hours price is below the regular-session close, indicating cautious after-hours sentiment.

Altimmune, Inc. (ALT) 7-Day Stock Price Change

Over the past seven days, Altimmune, Inc. (ALT) moved from $2.56 to $2.23, representing a decline of 13.09% ($0.33).

The stock traded between $2.17 and $2.63 during the period. The latest price is near the lower end of the 7-day range, indicating strong downward.

The average daily volume was 3.43 million shares, down versus the previous seven-day period, indicating lower trading activity.

ALT 52-Week Price Position

Position in Range: 1.3%

52W Low$2.17

52W High$6.44

ALT is currently trading at $2.23, placing it 1.3% of the way from its 52-week low of $2.17 to its 52-week high of $6.44. This percentage reflects the stock's relative position within its 52-week trading range, not its valuation or future performance.

What is Altimmune, Inc. (ALT)?

Altimmune Inc is a late clinical-stage biopharmaceutical company developing therapies for patients with serious liver diseases. The Company's key candidate, pemvidutide, is a dual-action therapy targeting both glucagon and GLP-1 receptors in a balanced 1:1 ratio in development for the treatment of metabolic dysfunction-associated steatohepatitis (MASH), alcohol use disorder (AUD), and alcohol-associated liver disease (ALD). The company also plans to pursue additional indications for pemvidutide that leverage the differentiated clinical profile of pemvidutide.

Altimmune, Inc. Information

Industry	PHARMACEUTICAL PREPARATIONS
Employees	57
Exchange	NASDAQ
Company Website	https://www.altimmune.com

How to Buy Altimmune, Inc. (ALT) Stock on MEXC

Eligible investors can buy real shares of Altimmune, Inc. (ALT) 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 ALT and Place Your Order

Open the RealStocks trading page and search for ALT. 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 Altimmune, Inc. (ALT) stock price today?

Altimmune, Inc. (ALT) is currently trading at $ 2.23, down 3.26% ($0.07) from the previous close of $ 2.30. Intraday prices update in real time during regular trading hours.

2.Is ALT stock going up or down today?

As of 2026-10-21 22:01:00, ALT is trading at $ 2.23, down 3.26% ($0.07) from its previous close of $ 2.30. The stock has traded between $ 1.51 and $ 44,550.00 during today’s regular session. Past price movements do not guarantee future results.

3.What is ALT pre-market price?

As of 2026-10-21 22:01:00, ALT is trading at $ 2.33 in pre-market trading, up 1.22% ($0.03) from the previous close of $ 2.30. Pre-market prices reflect trading activity before the regular session opens and may experience lower liquidity and higher volatility.

4.What is ALT after-hours price?

As of 2026-10-21 22:01:00, ALT is trading at $ 2.22 in after-hours trading, down 3.43% ($0.08) from the regular-session close of $ 2.30. After-hours prices may differ from the regular session’s opening price due to lower liquidity and wider bid-ask spreads.

5.Is ALT stock trading now?

ALT 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 ALT sit relative to its 52-week high and low?

Over the past 52 weeks, ALT has traded between a low of $ 2.17 and a high of $ 6.44. At $ 2.23, the stock is positioned 1.3% 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 Altimmune, Inc. in?

Altimmune, Inc. (ALT) 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 Altimmune, Inc.'s market capitalization and where is it listed?

Altimmune, Inc. is listed on the NASDAQ exchange with a market capitalization of $ 433.77M. Market cap reflects the total market value of all outstanding shares and is commonly used to classify stocks by size.

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

ALT trades at a P/E ratio of --, based on trailing-twelve-month EPS of $ -0.47. 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 Altimmune, Inc. pay a dividend?

Altimmune, 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.