Atossa Therapeutics (ATOS) Stock Chart & Stock Price History $0.89 -0.03 (-3.13%) Closing price 06/10/2025 04:00 PM EasternExtended Trading$0.87 -0.01 (-1.41%) As of 06/10/2025 07:26 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Atossa Therapeutics Stock Price Performance The Atossa Therapeutics (ATOS) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 28.59%, with a year-to-date return of -6.21%. In the past month, the stock has increased 7.41%, reflecting recent market activity. As of the latest close, Atossa Therapeutics traded at $0.89 with a market cap of $114.38 million and volume of 955,591 shares. Five years ago, the stock traded at $3.08, representing a 71.25% decrease over that period. At the time, it had a market cap of $29.29 million and a volume of 666,177 shares. Receive ATOS Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Atossa Therapeutics and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-1.62%1 Month Performance+7.41%3 Month Performance+19.53%Year-To-Date Performance-6.21%1 Year Performance-28.59%5 Year Performance-71.25% ATOS Stock Chart for Wednesday, June, 11, 2025 ATOS Chart by TradingView Atossa Therapeutics Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization06/10/2025$0.91$0.89-3.13%$0.92$0.84955,591 shs$114.38 million06/09/2025$0.90$0.91+1.56%$0.93$0.90412,288 shs$118.07 million06/06/2025$0.86$0.90+4.69%$0.91$0.85644,942 shs$116.27 million06/05/2025$0.86$0.86+0.32%$0.90$0.83681,583 shs$111.06 million06/04/2025$0.85$0.86+0.57%$0.87$0.84322,779 shs$110.71 million06/03/2025$0.87$0.85-1.68%$0.89$0.84603,248 shs$110.08 million06/02/2025$0.78$0.87+10.49%$0.90$0.78886,668 shs$111.97 million05/30/2025$0.76$0.78+3.16%$0.80$0.73691,070 shs$101.33 million05/29/2025$0.81$0.76-6.48%$0.83$0.751.19 million shs$98.23 million05/28/2025$0.84$0.81-3.19%$0.84$0.81429,606 shs$105.04 million Get the Latest News and Ratings for ATOS and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Atossa Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 05/27/2025$0.83$0.84+1.00%$0.86$0.82568,185 shs$108.50 million05/26/2025$0.83$0.83$0.89$0.83608,937 shs$107.43 million05/23/2025$0.87$0.83-4.39%$0.89$0.83608,937 shs$107.43 million05/22/2025$0.87$0.87-0.09%$0.90$0.85595,829 shs$112.37 million05/21/2025$0.94$0.87-7.58%$0.96$0.86946,179 shs$112.47 million05/20/2025$0.98$0.94-4.22%$0.99$0.93667,387 shs$121.69 million05/19/2025$0.97$0.98+1.39%$0.99$0.93414,889 shs$127.05 million05/16/2025$0.99$0.97-1.57%$1.01$0.97574,810 shs$125.31 million05/15/2025$1.03$0.99-4.31%$1.06$0.961.07 million shs$127.31 million05/14/2025$0.89$1.03+15.73%$1.07$0.902.55 million shs$133.05 million05/13/2025$0.84$0.89+6.34%$0.89$0.83622,439 shs$114.96 million05/12/2025$0.82$0.84+1.52%$0.86$0.83552,183 shs$108.10 million Related Companies ORKA Stock Price Chart RAPP Stock Price Chart ERAS Stock Price Chart DNA Stock Price Chart TECX Stock Price Chart ATAI Stock Price Chart UPXI Stock Price Chart TNGX Stock Price Chart SEPN Stock Price Chart PGEN Stock Price Chart Receive ATOS Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Atossa Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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