OS Therapies (OSTX) Stock Chart & Stock Price History $2.26 -0.24 (-9.60%) Closing price 04:00 PM EasternExtended Trading$2.26 0.00 (0.00%) As of 06:30 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 ForecastsChartCompetitorsHeadlinesInsider TradesOwnershipSEC FilingsTrendsBuy This Stock OS Therapies Stock Price Performance The OS Therapies (OSTX) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 37.91%, with a year-to-date return of -47.20%. In the past month, the stock has increased 25.56%, reflecting recent market activity. As of the latest close, OS Therapies traded at $2.50 with a market cap of $79.73 million and volume of 807,550 shares. 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Read our full terms of service and privacy policy. 5 Day Performance-8.87%1 Month Performance+25.56%3 Month Performance+32.94%Year-To-Date Performance-47.20%1 Year Performance-37.91% OSTX Stock Chart for Thursday, August, 28, 2025 OSTX Chart by TradingView OS Therapies 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 Capitalization08/27/2025$2.33$2.50+7.30%$2.50$2.30807,550 shs$79.73 million08/26/2025$2.19$2.33+6.39%$2.38$2.13884,520 shs$74.31 million08/25/2025$2.48$2.19-11.69%$2.49$1.911.19 million shs$69.84 million08/22/2025$2.40$2.48+3.33%$2.57$2.361.08 million shs$79.09 million08/21/2025$2.19$2.40+9.59%$2.54$2.201.80 million shs$75.90 million08/20/2025$2.15$2.19+1.86%$2.24$2.10570,519 shs$69.26 million08/19/2025$2.18$2.15-1.38%$2.23$1.96819,610 shs$67.99 million08/18/2025$2.06$2.18+5.83%$2.20$2.04519,676 shs$68.94 million08/15/2025$2.15$2.06-4.19%$2.15$2.02484,126 shs$57.88 million08/14/2025$1.88$2.15+14.36%$2.16$1.71950,662 shs$60.41 million Get the Latest News and Ratings for OSTX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for OS Therapies and its competitors with MarketBeat's FREE daily newsletter. 08/13/2025$1.78$1.88+5.62%$1.89$1.80459,035 shs$52.82 million08/12/2025$1.67$1.78+6.59%$1.78$1.67309,378 shs$50.01 million08/11/2025$1.73$1.67-3.47%$1.78$1.67198,819 shs$46.92 million08/08/2025$1.75$1.73-1.14%$1.79$1.68404,504 shs$48.61 million08/07/2025$1.75$1.75$1.85$1.702.88 million shs$49.17 million08/06/2025$1.72$1.75+1.74%$1.75$1.67157,122 shs$49.17 million08/05/2025$1.73$1.72-0.58%$1.72$1.67191,816 shs$48.33 million08/04/2025$1.75$1.73-1.14%$1.77$1.67230,440 shs$48.61 million08/01/2025$1.78$1.75-1.69%$1.79$1.67297,148 shs$49.17 million07/31/2025$1.75$1.78+1.71%$1.82$1.73169,987 shs$50.01 million07/30/2025$1.83$1.75-4.37%$1.84$1.75176,762 shs$49.17 million07/29/2025$1.80$1.83+1.67%$1.85$1.73340,665 shs$51.42 million07/28/2025$1.80$1.80$1.83$1.72274,258 shs$50.58 million Related Companies Contineum Therapeutics Stock Chart Vor Biopharma Stock Chart DBV Technologies Stock Chart Mereo BioPharma Group Stock Chart Jade Biosciences Stock Chart Lexeo Therapeutics Stock Chart Puma Biotechnology Stock Chart Allogene Therapeutics Stock Chart Tvardi Therapeutics Stock Chart Galectin Therapeutics Stock Chart Receive OSTX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for OS Therapies and its competitors with MarketBeat's FREE daily newsletter. 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