NASDAQ:GLSI Greenwich LifeSciences (GLSI) Stock Price, News & Analysis $16.67 +1.36 (+8.88%) As of 08/21/2026 04:00 PM Eastern Add Compare Share Share Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsFinancialsInsider TradesNews and TrendsOwnershipSEC FilingsShort Interest About Greenwich LifeSciences Stock (NASDAQ:GLSI) View Price History Chart DataSkip Price History Chart 1 Day 5 Days 30 Days 90 Days 1 Year Advanced 1 Day 1 Day 5 Days 30 Days 90 Days 1 Year Advanced Show volume Show extended hours Get Greenwich LifeSciences alerts:Sign Up Key Stats Today's Range$15.54▼$17.4850-Day Range$12.77▼$23.9952-Week Range$7.78▼$34.10Volume176,067 shsAverage Volume120,634 shsMarket Capitalization$244.72 millionP/E RatioN/ADividend YieldN/APrice Target$69.00Consensus RatingHold 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™ Stocks44th Percentile Overall ScoreGLSI MarketRank™: Greenwich LifeSciences scored higher than 44% of companies evaluated by MarketBeat, and ranked 598th out of 914 stocks in the healthcare sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.4 / 5Analyst RatingHold Consensus RatingGreenwich LifeSciences has received a consensus rating of Hold. The company's average rating score is 2.00, and is based on no strong buy ratings, 1 buy rating, no hold ratings, and 1 sell rating.Upside PotentialGreenwich LifeSciences has a consensus price target of $69.00, representing about 313.9% upside from its current price of $16.67.Amount of Analyst CoverageGreenwich LifeSciences has only been the subject of 2 research reports in the past 90 days.Read more about Greenwich LifeSciences' stock forecast and price target. Earnings and Valuation0.6 / 5Proj. Earnings GrowthGrowing Earnings GrowthEarnings for Greenwich LifeSciences are expected to grow in the coming year, from ($1.38) to ($1.17) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Greenwich LifeSciences is -10.82, 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 -10.82, 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 79.38. P/B Ratios above 3 indicate that a company could be overvalued with respect to its assets and liabilities. Short Interest1.0 / 5Short Interest LevelBearish Percentage of Shares Shorted21.64% 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 7.18.Change versus previous monthShort interest in Greenwich LifeSciences has recently increased by 5.01%, indicating that investor sentiment is decreasing significantly. 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. News and Social Media0.6 / 5News SentimentN/A Search InterestOnly 1 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 Follows2 people have added Greenwich LifeSciences to their MarketBeat watchlist in the last 30 days. Company Ownership3.6 / 5Insider TradingAcquiring Shares Net Insider BuyingOver the last three months, insiders have purchased a net $76,618.00 in company stock, which represents 0.0313% of the company's market cap.Insider Buying vs. Insider SellingIn the past three months, Greenwich LifeSciences insiders have bought more of their company's stock than they have sold. Specifically, they have bought $76,618.00 in company stock and sold $0.00 in company stock.Percentage Held by Insiders51.47% 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 Institutions4.16% 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. 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GLSI Stock News HeadlinesGreenwich LifeSciences Extends Insider and Pre-IPO Share Lock-Up to January 31, 2027August 10, 2026 | quiverquant.comQGreenwich LifeSciences Extends Lock-up of Directors and Officers to January 31, 2027August 10, 2026 | globenewswire.comThe Rumors About Elon’s Next Move Are Spreading FastRumors are circulating that Elon Musk is preparing to acquire three publicly traded companies. Dr. Mark Skousen, who met Musk in person and called the SpaceX listing months early, says he has identified all three targets in what he calls Elon's $2.1 Trillion Hit List. See the three companies before the rumors become headlines.August 22 at 1:00 AM | The Oxford Club (Ad)Greenwich LifeSciences (NASDAQ:GLSI) CEO Acquires 1,500 SharesJuly 30, 2026 | insidertrades.comGreenwich LifeSciences (NASDAQ:GLSI) CEO Snehal Patel Buys 1,100 Shares of StockJuly 29, 2026 | insidertrades.comGreenwich LifeSciences Announces UK Regulatory Approval to Expand Phase III FLAMINGO-01 Breast Cancer TrialJuly 22, 2026 | quiverquant.comQGreenwich LifeSciences Announces Approval to Expand FLAMINGO-01 into the United KingdomJuly 22, 2026 | globenewswire.comGreenwich LifeSciences Updates FLAMINGO-01 Phase III Trial Design, Enrollment and Financial OutlookJuly 20, 2026 | quiverquant.comQSee More Headlines GLSI Stock Analysis - Frequently Asked Questions How have GLSI shares performed this year? Greenwich LifeSciences' stock was trading at $21.01 at the start of the year. Since then, GLSI stock has decreased by 20.7% and is now trading at $16.67. How were Greenwich LifeSciences' earnings last quarter? Greenwich LifeSciences, Inc. (NASDAQ:GLSI) released its earnings results on Tuesday, August, 11th. The company reported ($0.27) EPS for the quarter, topping analysts' consensus estimates of ($0.33) by $0.06. When did Greenwich LifeSciences IPO? Greenwich LifeSciences (GLSI) raised $8 million in an IPO on Friday, September 25th 2020. The company issued 1,260,870 shares at $5.75-$6.75 per share. Aegis Capital served as the underwriter for the IPO. Who are Greenwich LifeSciences' major shareholders? Top institutional shareholders of Greenwich LifeSciences include BlackRock Inc. (3.31%), Bank of New York Mellon Corp (0.33%), GSA Capital Partners LLP (0.13%) and Ancora Advisors LLC (0.07%). 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 Earnings8/11/2026Today8/21/2026Fiscal Year End12/31/2026Get Stock Alerts Health Indicator TradeSmith's Health IndicatorA long-term volatility-based measure designed for securities held 12 months or longer.Green: Strong and healthy uptrend with normal pullbacks.Yellow: Significant pullback but still within expected volatility.Red: Dropped beyond expected volatility; considered unhealthy. Red Zone (1m+) 1-Year History Aug 25 Nov 25 Feb 26 May 26 Aug 26 GLSI's financial health is in the Red zone, according to TradeSmith. GLSI has been in this zone for over one month. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorHealthcare Industry Biotechnology Sub-IndustryBiotechnology Current SymbolNASDAQ:GLSI CIK1799788 Webwww.greenwichlifesciences.com Phone832-819-3232FaxN/AEmployees3Year Founded2006Price Target and Rating Average Price Target for Greenwich LifeSciences$69.00 High Price Target$69.00 Low Price Target$69.00 Potential Upside/Downside+313.9%Consensus RatingHold Rating Score (0-4)2.00 Research Coverage2 Analysts Profitability EPS (Trailing Twelve Months)($1.54) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$19.36 million Net MarginsN/A Pretax MarginN/A Return on Equity-793.81% Return on Assets-295.32% Debt Debt-to-Equity RatioN/A Current Ratio1.54 Quick Ratio1.54 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$0.21 per share Price / Book79.38Miscellaneous Outstanding Shares14,680,000Free Float7,123,000Market Cap$244.72 million OptionableNot Optionable Beta1.46 Social Links The 10 Best High-Yield Dividend Stocks for 2026Discover the 10 Best High-Yield Dividend Stocks for 2026 and secure reliable income in uncertain markets. 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