Altimmune - 20 Year Stock Price History | ALT

The latest closing stock price for Altimmune as of July 16, 2025 is 4.18.

  • An investor who bought $1,000 worth of Altimmune stock at the IPO in 2005 would have $-998 today, roughly -1 times their original investment - a -26.72% compound annual growth rate over 20 years.
  • The all-time high Altimmune stock closing price was 2715.99 on March 14, 2006.
  • The Altimmune 52-week high stock price is 11.16, which is 167% above the current share price.
  • The Altimmune 52-week low stock price is 2.90, which is 30.6% below the current share price.
  • The average Altimmune stock price for the last 52 weeks is 6.42.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Altimmune - 20 Year Stock Price History | ALT

  • An investor who bought $1,000 worth of Altimmune stock at the IPO in 2005 would have $-998 today, roughly -1 times their original investment - a -26.72% compound annual growth rate over 20 years.
  • The all-time high Altimmune stock closing price was 2715.99 on March 14, 2006.
  • The Altimmune 52-week high stock price is 11.16, which is 167% above the current share price.
  • The Altimmune 52-week low stock price is 2.90, which is 30.6% below the current share price.
  • The average Altimmune stock price for the last 52 weeks is 6.42.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.