Sonnet BioTherapeutics (SONN) Stock Chart & Stock Price History $4.37 -0.04 (-0.91%) Closing price 04:00 PM EasternExtended Trading$4.38 +0.01 (+0.32%) As of 06:29 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 ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Sonnet BioTherapeutics Stock Price Performance The Sonnet BioTherapeutics (SONN) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 8.19%, with a year-to-date return of 199.32%. In the past month, the stock has decreased 25.93%, reflecting recent market activity. As of the latest close, Sonnet BioTherapeutics traded at $4.41 with a market cap of $30.11 million and volume of 531,707 shares. Five years ago, the stock traded at a split-adjusted price of $6,529.60, representing a 99.93% decrease over that period. At the time, it had a market cap of $36.16 million and a volume of 2,780 shares. Receive SONN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Sonnet BioTherapeutics and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. 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Read our full terms of service and privacy policy. 5 Day Performance-14.81%1 Month Performance-25.93%3 Month Performance-15.47%Year-To-Date Performance+199.32%1 Year Performance-8.19%5 Year Performance-99.93% SONN Stock Chart for Monday, October, 13, 2025 SONN Chart by TradingView Sonnet BioTherapeutics 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 Capitalization10/10/2025$4.74$4.41-6.96%$4.99$4.33531,707 shs$30.11 million10/09/2025$5.13$4.74-7.60%$5.05$4.71290,998 shs$32.37 million10/08/2025$5.05$5.13+1.58%$5.19$4.82326,658 shs$35.04 million10/07/2025$5.44$5.05-7.17%$5.55$4.90571,660 shs$34.48 million10/06/2025$5.63$5.44-3.37%$6.10$5.42380,807 shs$37.16 million10/03/2025$6.01$5.63-6.32%$6.19$5.33529,294 shs$38.45 million10/02/2025$5.03$6.01+19.48%$6.05$5.05759,869 shs$41.05 million10/01/2025$4.58$5.03+9.83%$5.58$4.61698,918 shs$34.34 million09/30/2025$4.89$4.58-6.34%$4.91$4.25617,637 shs$31.28 million09/29/2025$5.33$4.89-8.26%$5.29$4.85665,279 shs$33.40 million Get the Latest News and Ratings for SONN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Sonnet BioTherapeutics and its competitors with MarketBeat's FREE daily newsletter. 09/26/2025$5.33$5.33$5.59$4.92592,105 shs$36.40 million09/25/2025$6.21$5.33-14.17%$5.99$4.821.12 million shs$36.39 million09/24/2025$5.96$6.21+4.19%$6.38$5.91471,849 shs$42.41 million09/23/2025$5.72$5.96+4.20%$6.50$5.60718,327 shs$40.71 million09/22/2025$6.20$5.72-7.74%$6.34$5.441.13 million shs$39.05 million09/19/2025$7.58$6.20-18.21%$7.25$6.001.89 million shs$42.33 million09/18/2025$7.06$7.58+7.37%$7.85$7.061.60 million shs$51.77 million09/17/2025$6.48$7.06+8.95%$7.70$6.552.75 million shs$48.22 million09/16/2025$5.54$6.48+16.97%$7.90$5.695.13 million shs$44.24 million09/15/2025$5.90$5.54-6.10%$6.29$4.603.10 million shs$37.84 million09/12/2025$3.96$5.90+48.99%$6.65$3.977.53 million shs$40.30 million Related Companies biote Stock Chart Tevogen Bio Stock Chart Zhengye Biotechnology Stock Chart Oncolytics Biotech Stock Chart Atossa Genetics Stock Chart Virios Therapeutics Stock Chart Scilex Stock Chart TuHURA Biosciences Stock Chart Instil Bio Stock Chart Sol-Gel Technologies Stock Chart Receive SONN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Sonnet BioTherapeutics and its competitors with MarketBeat's FREE daily newsletter. 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