Greenwich LifeSciences (GLSI) Stock Chart & Stock Price History $26.88 -0.33 (-1.21%) Closing price 05/18/2026 04:00 PM EasternExtended Trading$27.32 +0.45 (+1.66%) As of 07:25 AM 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 ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Greenwich LifeSciences Stock Price Performance The Greenwich LifeSciences (GLSI) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 164.05%, with a year-to-date return of 27.94%. In the past month, the stock has decreased 3.10%, reflecting recent market activity. As of the latest close, Greenwich LifeSciences traded at $26.88 with a market cap of $372.29 million and volume of 82,184 shares. Five years ago, the stock traded at $32.20, representing a 16.52% decrease over that period. At the time, it had a market cap of $0.00 and a volume of 62,679 shares. Receive GLSI Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Greenwich LifeSciences and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By 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. 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Read our full terms of service and privacy policy. 5 Day Performance+3.50%1 Month Performance-3.10%3 Month Performance+7.82%Year-To-Date Performance+27.94%1 Year Performance+164.05%5 Year Performance-16.52% GLSI Stock Chart for Tuesday, May, 19, 2026 GLSI Chart by TradingView Greenwich LifeSciences 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 Capitalization05/18/2026$27.21$26.88-1.21%$28.00$26.6082,184 shs$372.29 million05/15/2026$25.97$27.21+4.77%$29.10$25.52218,333 shs$376.86 million05/14/2026$25.30$25.97+2.65%$27.17$25.55151,494 shs$359.81 million05/13/2026$24.71$25.30+2.39%$26.95$24.83181,901 shs$350.41 million05/12/2026$24.13$24.71+2.40%$25.20$23.5596,313 shs$342.23 million05/11/2026$22.86$24.13+5.56%$26.00$23.20260,729 shs$334.32 million05/08/2026$23.62$22.86-3.22%$24.01$22.8674,619 shs$327.24 million05/07/2026$23.06$23.62+2.43%$23.68$22.6652,865 shs$327.14 million05/06/2026$22.30$23.06+3.41%$23.74$22.8089,724 shs$319.38 million05/05/2026N/A$22.30$22.58$21.41123,419 shs$308.97 million Get the Latest News and Ratings for GLSI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Greenwich LifeSciences and its competitors with MarketBeat's FREE daily newsletter. 04/30/2026$21.60$23.62+9.35%$23.62$21.6197,231 shs$327.26 million04/29/2026$22.80$21.60-5.26%$22.64$21.25154,577 shs$299.27 million04/28/2026$23.99$22.80-4.96%$24.00$22.7187,862 shs$315.78 million04/27/2026$24.21$23.99-0.91%$24.96$23.7663,680 shs$332.26 million04/24/2026$23.67$24.21+2.28%$24.72$23.4187,519 shs$335.31 million04/23/2026$24.94$23.67-5.09%$25.00$23.2778,757 shs$327.95 million04/22/2026$22.91$24.94+8.86%$25.44$23.64122,974 shs$345.42 million04/21/2026$24.52$22.91-6.57%$24.83$22.80180,775 shs$317.30 million04/20/2026$27.74$24.52-11.61%$28.99$24.10336,738 shs$339.60 million Related Companies WVE Stock Chart CRVS Stock Chart AVBP Stock Chart GHRS Stock Chart MLTX Stock Chart MAZE Stock Chart MPLT Stock Chart CMPS Stock Chart JBIO Stock Chart CALT Stock Chart Receive GLSI Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Greenwich LifeSciences and its competitors with MarketBeat's FREE daily newsletter. 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