NASDAQ:GLSI Greenwich LifeSciences (GLSI) Stock Price, News & Analysis $16.53 +1.39 (+9.18%) Closing price 04:00 PM EasternExtended Trading$16.64 +0.11 (+0.64%) As of 07:30 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 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$15.20▼$16.8050-Day Range$13.54▼$19.4852-Week Range$7.78▼$34.10Volume119,351 shsAverage Volume129,925 shsMarket Capitalization$242.66 millionP/E RatioN/ADividend YieldN/APrice Target$69.00Consensus RatingHold Company Overview Greenwich LifeSciences, Inc. is a clinical-stage biotechnology company focused on developing cancer immunotherapies designed to reduce the risk of breast cancer recurrence. The company’s lead product candidate is GLSI-100, an investigational vaccine intended for patients with HER2-positive breast cancer who have completed standard treatment. GLSI-100 combines GP2, a peptide derived from the HER2 protein, with granulocyte-macrophage colony-stimulating factor (GM-CSF), an immune-system stimulant. Greenwich LifeSciences is evaluating the therapy in clinical studies, including the Phase III PRESENT trial, which is designed to assess whether GLSI-100 can help prevent recurrence in eligible patients. Greenwich LifeSciences is headquartered in Houston, Texas, and its activities are centered on the development of GLSI-100 rather than the marketing of approved pharmaceutical products. The company was founded by Snehal Patel, who serves as its chief executive officer.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 590th out of 881 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 317.4% upside from its current price of $16.53.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 Book Value per Share RatioGreenwich LifeSciences has a P/B Ratio of 551.00. 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 Interest1.0 / 5Short Interest LevelBearish Percentage of Shares Shorted22.20% 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 11.38, which indicates bearish sentiment.Change versus previous monthShort interest in Greenwich LifeSciences has recently decreased by 3.08%, indicating that investor sentiment is improving. 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 Sentiment0.00 News Coverage This WeekMarketBeat has tracked 2 news articles for Greenwich LifeSciences this week, compared to 3 articles on an average week.MarketBeat Follows2 people have added Greenwich LifeSciences to their MarketBeat watchlist in the last 30 days. This is an increase of 100% compared to the previous 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 0.0316% 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. Submit 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. 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GLSI Stock News Headlines3 Clinical-Stage Cancer Stocks With Pristine Balance SheetsSeptember 16, 2026 | finance.yahoo.comGreenwich LifeSciences Extends Insider and Pre-IPO Share Lock-Up to January 31, 2027August 10, 2026 | quiverquant.comQThe end may be near for these iconic stocksMarc Chaikin, founder of Chaikin Analytics, says two forces - AI disruption and fracturing global trade - are triggering a historic wealth transfer already underway in 2026. Household names like Intuit (-57%), Boston Scientific (-49%), and Tractor Supply (-40%) are cratering, while lesser-known companies like Sandisk (+573%) and Rackspace (+444%) surge. Chaikin has identified specific stocks he believes investors should sell before they fall further - and the names may surprise you. He's also pinpointing a company tapped as Nvidia's self-driving partner and a potential AI megadeal that could split into three high-growth stocks. Stream his free presentation to get every buy and sell recommendation with no membership or credit card required.October 9 at 1:00 AM | Chaikin Analytics (Ad)Greenwich LifeSciences Extends Lock-up of Directors and Officers to January 31, 2027August 10, 2026 | globenewswire.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.comQGreenwich LifeSciences Provides Clinical Updates on FLAMINGO-01July 20, 2026 | globenewswire.comSee 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 beginning of 2026. Since then, GLSI shares have decreased by 21.3% and is now trading at $16.53. 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) earnings per share (EPS) for the quarter, topping the consensus estimate of ($0.33) by $0.06. When did Greenwich LifeSciences IPO? Greenwich LifeSciences (GLSI) raised $8 million in an initial public offering on Friday, September 25th 2020. The company issued 1,260,870 shares at a price of $5.75-$6.75 per share. Aegis Capital acted as the underwriter for the IPO. 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 Earnings8/11/2026Today10/09/2026Next Earnings (Estimated)11/13/2026Fiscal 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 (2m+) 1-Year History Oct 25 Jan 26 Apr 26 Jul 26 Oct 26 GLSI's financial health is in the Red zone, according to TradeSmith. GLSI has been in this zone for over 2 months. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorHealthcare Industry Biotechnology Sub-IndustryBiotechnology Current SymbolNASDAQ:GLSI CIK1799788 Webwww.greenwichlifesciences.com Phone832-819-3232FaxN/AEmployees13Year 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+317.4%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$0.03 per share Price / Book551.00Miscellaneous Outstanding Shares14,680,000Free Float7,123,000Market Cap$242.66 million OptionableNot Optionable Beta1.46 Social Links The Best Nuclear Energy Stocks to BuyNuclear energy is entering a new growth cycle as rising power demand, expanding data centers, and renewed policy support bring the sector back into focus. 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