NASDAQ:GLSI Greenwich LifeSciences (GLSI) Stock Price, News & Analysis $11.00 -0.17 (-1.52%) Closing price 09/9/2025 04:00 PM EasternExtended Trading$10.98 -0.02 (-0.18%) As of 09/9/2025 04:10 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 Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock About Greenwich LifeSciences Stock (NASDAQ:GLSI) 30 days 90 days 365 days Advanced Chart View Price History Chart DataSkip Price History Chart Get Greenwich LifeSciences alerts:Sign Up Key Stats Today's Range$10.59▼$11.2550-Day Range$9.88▼$12.4952-Week Range$8.06▼$15.50Volume50,807 shsAverage Volume39,437 shsMarket Capitalization$149.93 millionP/E RatioN/ADividend YieldN/APrice Target$42.00Consensus RatingBuy Company Overview Greenwich LifeSciences, Inc. (NASDAQ: GLSI) is a clinical-stage biotechnology company focused on the development of novel immune modulators for the treatment of cancer and autoimmune diseases. The company’s product pipeline includes candidates engineered to activate or regulate key components of the innate and adaptive immune systems, with programs advancing through preclinical and early-stage clinical studies. Headquartered in Greenwich, Connecticut, Greenwich LifeSciences conducts its research and development activities primarily in the United States. The company leverages proprietary technologies to identify immune-modulating compounds and works with contract research organizations to support its preclinical and clinical programs. Greenwich LifeSciences pursues strategic collaborations and licensing arrangements to expand its scientific expertise and accelerate the progress of its therapeutic candidates. With a focus on unmet medical needs in oncology and inflammatory disorders, the company aims to bring first-in-class or best-in-class treatments to patients through disciplined clinical development and regulatory strategies.AI Generated. May Contain Errors. Read More Greenwich LifeSciences Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks23rd Percentile Overall ScoreGLSI MarketRank™: Greenwich LifeSciences scored higher than 23% of companies evaluated by MarketBeat, and ranked 841st out of 927 stocks in the medical sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.7 / 5Analyst RatingBuy Consensus RatingGreenwich LifeSciences has received a consensus rating of Buy. The company's average rating score is 3.00, and is based on 2 buy ratings, no hold ratings, and no sell ratings.Upside PotentialGreenwich LifeSciences has a consensus price target of $42.00, representing about 281.8% upside from its current price of $11.00.Amount of Analyst CoverageGreenwich LifeSciences has only been the subject of 1 research reports in the past 90 days.Read more about Greenwich LifeSciences' stock forecast and price target. Earnings and Valuation0.0 / 5Proj. Earnings GrowthDecreasing Earnings GrowthEarnings for Greenwich LifeSciences are expected to decrease in the coming year, from ($0.80) to ($0.81) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Greenwich LifeSciences is -8.09, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Earnings Ratio vs. SectorThe P/E ratio of Greenwich LifeSciences is -8.09, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Book Value per Share RatioGreenwich LifeSciences has a P/B Ratio of 57.89. P/B Ratios above 3 indicate that a company could be overvalued with respect to its assets and liabilities.Read more about Greenwich LifeSciences' valuation and earnings. Short Interest0.0 / 5Short Interest LevelBearish Percentage of Shares Shorted17.35% of the float of Greenwich LifeSciences has been sold short.Short Interest Ratio / Days to CoverGreenwich LifeSciences has a short interest ratio ("days to cover") of 19.7, which indicates bearish sentiment.Change versus previous monthShort interest in Greenwich LifeSciences has recently increased by 1.92%, indicating that investor sentiment is decreasing. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldGreenwich LifeSciences does not currently pay a dividend.Dividend GrowthGreenwich LifeSciences does not have a long track record of dividend growth. Sustainability and ESGN/AEnvironmental ScoreN/A Percentage of Shares Shorted17.35% of the float of Greenwich LifeSciences has been sold short.Short Interest Ratio / Days to CoverGreenwich LifeSciences has a short interest ratio ("days to cover") of 19.7, which indicates bearish sentiment.Change versus previous monthShort interest in Greenwich LifeSciences has recently increased by 1.92%, indicating that investor sentiment is decreasing. News and Social Media0.6 / 5News SentimentN/A Search InterestOnly 2 people have searched for GLSI on MarketBeat in the last 30 days. This is a decrease of 0% compared to the previous 30 days.MarketBeat Follows13 people have added Greenwich LifeSciences to their MarketBeat watchlist in the last 30 days. Company Ownership1.7 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, Greenwich LifeSciences insiders have not sold or bought any company stock.Percentage Held by Insiders51.67% of the stock of Greenwich LifeSciences is held by insiders. A high percentage of insider ownership can be a sign of company health.Percentage Held by InstitutionsOnly 4.16% of the stock of Greenwich LifeSciences is held by institutions.Read more about Greenwich LifeSciences' insider trading history. Receive GLSI Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Greenwich LifeSciences and its competitors with MarketBeat's FREE daily newsletter. Submit 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. 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Gains Coverage from Noble Capital Markets Amid Phase III Trial of GLSI-100 for Breast CancerAugust 20, 2025 | quiverquant.comQWall Street Legend Issues Urgent AI Stock WarningChaikin's stepping forward with a new warning – focused on the red-hot A.I. frenzy taking the U.S. stock market by storm. | Chaikin Analytics (Ad)Noble Capital Markets Initiates Equity Research Coverage on Greenwich LifeSciencesAugust 20, 2025 | globenewswire.comGreenwich LifeSciences to build out internal clinical trial operations teamAugust 20, 2025 | msn.comGreenwich LifeSciences, Inc. Expands Internal Clinical Trial Management Team for FLAMINGO-01 Phase III StudyAugust 19, 2025 | quiverquant.comQGreenwich LifeSciences Announces Plan to Build Out Internal Clinical Operations TeamAugust 19, 2025 | globenewswire.comOwning 53% in Greenwich LifeSciences, Inc. (NASDAQ:GLSI) means that insiders are heavily invested in the company's futureAugust 16, 2025 | finance.yahoo.comSee More Headlines GLSI Stock Analysis - Frequently Asked Questions How have GLSI shares performed this year? Greenwich LifeSciences' stock was trading at $11.23 at the start of the year. Since then, GLSI stock has decreased by 2.0% and is now trading at $11.00. How were Greenwich LifeSciences' earnings last quarter? Greenwich LifeSciences, Inc. (NASDAQ:GLSI) released its earnings results on Thursday, August, 14th. The company reported ($0.30) EPS for the quarter, missing analysts' consensus estimates of ($0.24) by $0.06. When did Greenwich LifeSciences IPO? Greenwich LifeSciences (GLSI) raised $7 million in an initial public offering on Friday, September 25th 2020. The company issued 1,300,000 shares at $5.75 per share. Aegis Capital acted as the underwriter for the IPO. Who are Greenwich LifeSciences' major shareholders? Greenwich LifeSciences' top institutional shareholders include Geode Capital Management LLC (1.04%), Marshall Wace LLP (0.42%) and Police & Firemen s Retirement System of New Jersey (0.02%). Insiders that own company stock include Snehal Patel and Jaye Thompson. View institutional ownership trends. How do I buy shares of Greenwich LifeSciences? Shares of GLSI stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Greenwich LifeSciences own? Based on aggregate information from My MarketBeat watchlists, some other companies that Greenwich LifeSciences investors own include Zomedica (ZOM), Jumia Technologies (JMIA), Tesla (TSLA), Advanced Micro Devices (AMD), Netflix (NFLX), Meta Platforms (META) and NVIDIA (NVDA). Company Calendar Last Earnings8/14/2025Today9/10/2025Next Earnings (Estimated)11/13/2025Fiscal Year End12/31/2025Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry MED - BIOMED/GENE Sub-IndustryPharmaceutical Products Current SymbolNASDAQ:GLSI CIK1799788 Webwww.greenwichlifesciences.com Phone832-819-3232FaxN/AEmployees3Year FoundedN/APrice Target and Rating Average Price Target for Greenwich LifeSciences$42.00 High Price Target$45.00 Low Price Target$39.00 Potential Upside/Downside+281.8%Consensus RatingBuy Rating Score (0-4)3.00 Research Coverage2 Analysts Profitability EPS (Trailing Twelve Months)($1.36) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$15.79 million Net MarginsN/A Pretax MarginN/A Return on Equity-700.90% Return on Assets-455.64% Debt Debt-to-Equity RatioN/A Current Ratio1.85 Quick Ratio1.85 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$0.19 per share Price / Book57.89Miscellaneous Outstanding Shares13,630,000Free Float6,587,000Market Cap$149.93 million OptionableNot Optionable Beta1.66 Social Links These 7 Stocks Will Be Magnificent in 2025Discover the next wave of investment opportunities with our report, 7 Stocks That Will Be Magnificent in 2025. 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