Daily trading records
Atossa Therapeutics Stock Price on August 20, 2026
Direct answer
Atossa Therapeutics closed at $2.59 on August 20, 2026.
The open was $2.62, the high was $2.62 and the low was $2.44.
Volume was 70,955. The change from the prior close was -$0.05 (-1.89%).
Get free Atossa Therapeutics email updates.
Bullstory sends one daily email when new analysis or important company news is available.
Review Atossa Therapeutics's price trend and period performance.
The chart connects verified session closes from May 26, 2026 through August 20, 2026.
Period performance is calculated from verified trading sessions.
5-session performance
+1.17%
From the August 13, 2026 close of $2.56 to $2.59 on August 20, 2026.
20-session performance
+7.47%
From the July 23, 2026 close of $2.41 to $2.59 on August 20, 2026.
60-session performance
-47.68%
From the May 26, 2026 close of $4.95 to $2.59 on August 20, 2026.
Verified data
- Open
- $2.62
- High
- $2.62
- Low
- $2.44
- Close
- $2.59
- Volume
- 70,955
- Prior-close change
- -$0.05 (-1.89%)
Explore related company data
View all available daily prices for Atossa Therapeutics.View the previous trading day on August 19, 2026.View the next trading day on August 21, 2026.Return to the Atossa Therapeutics company profile.Review Atossa Therapeutics valuation and profitability metrics.Review Atossa Therapeutics analyst price targets.
Read the frequently asked questions.
What was Atossa Therapeutics's closing price on August 20, 2026?
Atossa Therapeutics closed at $2.59 on August 20, 2026.
What were Atossa Therapeutics's open, high and low on August 20, 2026?
The open was $2.62, the high was $2.62 and the low was $2.44.
How much did Atossa Therapeutics change from the prior close on August 20, 2026?
The change from the prior close was -$0.05 (-1.89%).
What was Atossa Therapeutics's volume on August 20, 2026?
Trading volume was 70,955 shares.
What is the source for Atossa Therapeutics's daily prices?
Daily aggregate prices are provided by Polygon.