OS Therapies (OSTX) Stock Chart & Stock Price History $1.73 -0.09 (-4.95%) Closing price 05/22/2026 04:10 PM EasternExtended Trading$1.74 +0.01 (+0.64%) As of 05/22/2026 08:00 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 Massive. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestBuy 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 increased 2.98%, with a year-to-date return of 23.57%. In the past month, the stock has decreased 2.26%, reflecting recent market activity. As of the latest close, OS Therapies traded at $1.73 with a market cap of $77.05 million and volume of 333,354 shares. 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Read our full terms of service and privacy policy. 5 Day Performance-1.70%1 Month Performance-2.26%3 Month Performance+33.08%Year-To-Date Performance+23.57%1 Year Performance+2.98% OSTX Stock Chart for Sunday, May, 24, 2026 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 DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization05/22/2026$1.82$1.73-4.95%$1.82$1.72333,354 shs$77.05 million05/21/2026$1.83$1.82-0.55%$1.85$1.73586,260 shs$81.06 million05/20/2026$1.76$1.83+3.98%$1.86$1.74542,809 shs$72.34 million05/19/2026$1.73$1.76+1.73%$1.82$1.68503,434 shs$69.57 million05/18/2026$1.88$1.73-7.98%$1.93$1.621.78 million shs$68.39 million05/15/2026$1.88$1.88$1.94$1.85859,499 shs$74.32 million05/14/2026$1.79$1.88+5.03%$1.99$1.861.81 million shs$74.32 million05/13/2026$1.71$1.79+4.68%$1.83$1.70542,547 shs$70.76 million05/12/2026$1.71$1.71$1.74$1.66225,306 shs$67.60 million05/11/2026$1.66$1.71+3.01%$1.76$1.65477,618 shs$67.60 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. 05/08/2026$1.70$1.66-2.35%$1.72$1.66299,776 shs$67.21 million05/07/2026$1.73$1.70-1.73%$1.76$1.67468,680 shs$67.20 million05/06/2026$1.73$1.73$1.79$1.72468,617 shs$68.39 million05/05/2026N/A$1.73$1.74$1.68264,031 shs$68.39 million04/30/2026$1.63$1.70+4.29%$1.90$1.691.22 million shs$67.20 million04/29/2026$1.63$1.63$1.67$1.55564,209 shs$64.43 million04/28/2026$1.77$1.63-7.91%$1.85$1.611.31 million shs$64.43 million04/27/2026$1.77$1.77$1.83$1.691.19 million shs$69.97 million04/24/2026$1.45$1.77+22.07%$1.84$1.423.41 million shs$69.97 million04/23/2026$1.43$1.45+1.40%$1.49$1.41452,909 shs$57.32 million Related Companies Eledon Pharmaceuticals Stock Chart Anavex Life Sciences Stock Chart ALX Oncology Stock Chart Compugen Stock Chart Akebia Therapeutics Stock Chart Protara Therapeutics Stock Chart Prelude Therapeutics Stock Chart Zentalis Pharmaceuticals Stock Chart Editas Medicine Stock Chart Alector 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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