NASDAQ:GLSI Greenwich LifeSciences (GLSI) Stock Price, News & Analysis $22.23 +0.58 (+2.68%) Closing price 06/9/2026 04:00 PM EasternExtended Trading$22.12 -0.11 (-0.49%) As of 06/9/2026 07:38 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 EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock 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$21.40▼$22.5650-Day Range$21.49▼$29.2352-Week Range$7.78▼$34.10Volume85,849 shsAverage Volume157,109 shsMarket Capitalization$326.34 millionP/E RatioN/ADividend YieldN/APrice Target$47.50Consensus 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™ Stocks28th Percentile Overall ScoreGLSI MarketRank™: Greenwich LifeSciences scored higher than 28% of companies evaluated by MarketBeat, and ranked 751st out of 857 stocks in the medical 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 2.33, and is based on no strong buy ratings, 2 buy ratings, no hold ratings, and 1 sell rating.Upside PotentialGreenwich LifeSciences has a consensus price target of $47.50, representing about 113.7% upside from its current price of $22.23.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 GrowthN/A Price to Earnings Ratio vs. the MarketThe P/E ratio of Greenwich LifeSciences is -14.16, 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 -14.16, 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 741.00. 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 Shorted21.31% 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 13.37, which indicates bearish sentiment.Change versus previous monthShort interest in Greenwich LifeSciences has recently decreased by 1.53%, 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 Media0.8 / 5News Sentiment-0.77 News SentimentGreenwich LifeSciences has a news sentiment score of -0.77. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a lower news sentiment than the 0.81 average news sentiment score of Medical companies.News Coverage This WeekMarketBeat has tracked 3 news articles for Greenwich LifeSciences this week, compared to 4 articles on an average week.Search InterestOnly 1 people have searched for GLSI on MarketBeat in the last 30 days. This is a decrease of -86% compared to the previous 30 days.MarketBeat FollowsOnly 1 people have added Greenwich LifeSciences to their MarketBeat watchlist in the last 30 days. This is a decrease of -67% compared to the previous 30 days. Company Ownership0.8 / 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 Insiders51.47% 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. 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. 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. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. GLSI Stock News HeadlinesGreenwich LifeSciences (NASDAQ:GLSI) Cut to "Sell" at Wall Street ZenJune 6, 2026 | americanbankingnews.comGLSI stock climbs after removing a key overhang – retail turns focus to high-stakes breast cancer trialJune 2, 2026 | msn.comSpaceX is offering you shares. Don't take them.SpaceX is reserving 30% of its IPO shares for retail investors through Robinhood, Fidelity, and Schwab. But at a $1.75 trillion valuation and 266 times earnings, early institutional holders may be looking for someone to sell to. Dylan Jovine has identified a small company in Musk's supply chain that builds the power infrastructure behind Colossus - still trading at a fraction of its potential value. No IPO allocation required. | Behind the Markets (Ad)Greenwich LifeSciences Presents FLAMINGO-01 Phase III Trial Open Label Data Published at ASCO Meeting 2026June 1, 2026 | globenewswire.comGreenwich LifeSciences, Inc. Provides Update on 2025 Form 10-K Filing and Phase III Clinical Trial ProgressJune 1, 2026 | quiverquant.comQGreenwich LifeSciences Provides Update Regarding Form 10-K FilingJune 1, 2026 | globenewswire.comGreenwich LifeSciences, Inc.: Greenwich LifeSciences Announces Receipt of Nasdaq Notice Regarding Late Form 10-Q FilingMay 23, 2026 | finanznachrichten.deGreenwich LifeSciences Announces Receipt of Nasdaq Notice Regarding Late Form 10-Q FilingMay 22, 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 start of the year. Since then, GLSI stock has increased by 5.8% and is now trading at $22.23. How were Greenwich LifeSciences' earnings last quarter? Greenwich LifeSciences, Inc. (NASDAQ:GLSI) announced its earnings results on Friday, November, 14th. The company reported ($0.30) earnings per share for the quarter, meeting analysts' consensus estimates of ($0.30). When did Greenwich LifeSciences IPO? Greenwich LifeSciences (GLSI) raised $8 million in an initial public offering (IPO) on Friday, September 25th 2020. The company issued 1,260,870 shares at a price of $5.75-$6.75 per share. Aegis Capital served as the underwriter for the IPO. Who are Greenwich LifeSciences' major shareholders? Greenwich LifeSciences' top institutional shareholders include Bank of New York Mellon Corp (0.34%), Sei Investments Co. (0.19%) and Strs Ohio (0.10%). 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 Earnings11/14/2025Today6/09/2026Next Earnings (Estimated)6/09/2026Fiscal 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. Yellow Zone (4d) 1-Year History Jun 25 Sep 25 Dec 25 Mar 26 Jun 26 As of 4 days ago, GLSI's financial health entered the Yellow zone, according to TradeSmith. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry MED - BIOMED/GENE Sub-IndustryPharmaceutical Products Current SymbolNASDAQ:GLSI CIK1799788 Webwww.greenwichlifesciences.com Phone832-819-3232FaxN/AEmployees3Year Founded2006Price Target and Rating Average Price Target for Greenwich LifeSciences$47.50 High Price Target$50.00 Low Price Target$45.00 Potential Upside/Downside+113.7%Consensus RatingHold Rating Score (0-4)2.33 Research Coverage3 Analysts Profitability EPS (Trailing Twelve Months)($1.57) 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-941.15% Return on Assets-368.53% Debt Debt-to-Equity RatioN/A Current Ratio2.01 Quick Ratio2.01 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$0.03 per share Price / Book741.00Miscellaneous Outstanding Shares14,680,000Free Float7,123,000Market Cap$326.34 million OptionableNot Optionable Beta1.40 Social Links Don't Wait for the OpenAI IPOThe AI wave will soon hit public markets with Anthropic and OpenAI set to go public later this year. 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