Daily trading records

Atossa Therapeutics Stock Price on August 4, 2026

Direct answer

Atossa Therapeutics closed at $2.31 on August 4, 2026.

The open was $2.18, the high was $2.34 and the low was $2.18.
Volume was 54,974. The change from the prior close was +$0.14 (+6.45%).

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Review Atossa Therapeutics's price trend and period performance.

The chart connects verified session closes from May 7, 2026 through August 4, 2026.

Closing-price trend by trading session

Period performance is calculated from verified trading sessions.

5-session performance

-4.35%

From the July 28, 2026 close of $2.415 to $2.31 on August 4, 2026.

20-session performance

-7.23%

From the July 7, 2026 close of $2.49 to $2.31 on August 4, 2026.

60-session performance

-59.26%

From the May 7, 2026 close of $5.67 to $2.31 on August 4, 2026.

Atossa Therapeutics Historical prices
Historical pricesOpenHighLowCloseVolumePrior-close change
$2.18$2.34$2.18$2.3154,974+$0.14 (+6.45%)

Verified data

Open
$2.18
High
$2.34
Low
$2.18
Close
$2.31
Volume
54,974
Prior-close change
+$0.14 (+6.45%)

Read the frequently asked questions.

What was Atossa Therapeutics's closing price on August 4, 2026?

Atossa Therapeutics closed at $2.31 on August 4, 2026.

What were Atossa Therapeutics's open, high and low on August 4, 2026?

The open was $2.18, the high was $2.34 and the low was $2.18.

How much did Atossa Therapeutics change from the prior close on August 4, 2026?

The change from the prior close was +$0.14 (+6.45%).

What was Atossa Therapeutics's volume on August 4, 2026?

Trading volume was 54,974 shares.

What is the source for Atossa Therapeutics's daily prices?

Daily aggregate prices are provided by Polygon.