NASDAQ:SLS SELLAS Life Sciences Group (SLS) Stock Price, News & Analysis $9.31 +0.13 (+1.42%) Closing price 05/29/2026 04:00 PM EasternExtended Trading$9.23 -0.08 (-0.82%) As of 05/29/2026 07:59 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 EventsFinancialsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock About SELLAS Life Sciences Group Stock (NASDAQ:SLS) 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 SLS alerts:Sign Up Key Stats Today's Range$8.60▼$9.5150-Day Range$4.01▼$9.3152-Week Range$1.39▼$9.51Volume25.84 million shsAverage Volume9.41 million shsMarket Capitalization$1.73 billionP/E RatioN/ADividend YieldN/APrice Target$10.00Consensus RatingHold Company Overview SELLAS Life Sciences Group, Inc. is a clinical-stage biopharmaceutical company focused on the development of active cellular immunotherapies for cancer. Headquartered in Waltham, Massachusetts, SELLAS specializes in targeting the Wilms’ tumor 1 (WT1) antigen, a protein commonly overexpressed in a range of hematologic and solid tumors. Since its founding, the company has built a pipeline around the use of peptide-based vaccines designed to train the patient’s own immune system to recognize and attack WT1-positive cancer cells. The company’s lead product candidate, galinpepimut-S (GPS), is an investigational multi-peptide vaccine directed against WT1. GPS is currently being evaluated in ongoing Phase II/III clinical trials for acute myeloid leukemia (AML), malignant pleural mesothelioma and ovarian cancer. SELLAS is also exploring combination regimens of GPS with immune checkpoint inhibitors to enhance antitumor activity, as well as next-generation cellular approaches intended to broaden its therapeutic platform beyond peptide vaccines. SELLAS conducts its clinical trials across multiple geographies, including North America, Europe and Japan, leveraging collaborations with leading academic research centers and contract research organizations. These partnerships enable the company to advance its programs efficiently through regulatory pathways and to access patient populations in key oncology indications. The management team at SELLAS brings together seasoned executives and scientific leaders with extensive experience in oncology drug development. The company remains committed to translating its WT1-targeted immunotherapy approach into new treatment options for patients with high-unmet-need cancers.AI Generated. May Contain Errors. Read More SELLAS Life Sciences Group Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks22nd Percentile Overall ScoreSLS MarketRank™: SELLAS Life Sciences Group scored higher than 22% of companies evaluated by MarketBeat, and ranked 791st out of 871 stocks in the medical sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion2.0 / 5Analyst RatingHold Consensus RatingSELLAS Life Sciences Group 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/DownsideThe consensus price target for SELLAS Life Sciences Group is close to its current price, suggesting limited near-term upside or downside.Amount of Analyst CoverageSELLAS Life Sciences Group has only been the subject of 2 research reports in the past 90 days.Read more about SELLAS Life Sciences Group's stock forecast and price target. Earnings and Valuation0.0 / 5Proj. Earnings GrowthN/A Price to Earnings Ratio vs. the MarketThe P/E ratio of SELLAS Life Sciences Group is -40.48, 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 SELLAS Life Sciences Group is -40.48, 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 RatioSELLAS Life Sciences Group has a P/B Ratio of 16.05. P/B Ratios above 3 indicate that a company could be overvalued with respect to its assets and liabilities.Read more about SELLAS Life Sciences Group's valuation and earnings. Short Interest2.0 / 5Short Interest LevelBearish Percentage of Shares Shorted31.11% of the float of SELLAS Life Sciences Group has been sold short.Short Interest Ratio / Days to CoverSELLAS Life Sciences Group has a short interest ratio ("days to cover") of 7.14.Change versus previous monthShort interest in SELLAS Life Sciences Group has recently decreased by 0.13%, indicating that investor sentiment is improving. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldSELLAS Life Sciences Group does not currently pay a dividend.Dividend GrowthSELLAS Life Sciences Group does not have a long track record of dividend growth. News and Social Media3.5 / 5News Sentiment0.62 News SentimentSELLAS Life Sciences Group has a news sentiment score of 0.62. 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 0.82 average news sentiment score of Medical companies.News Coverage This WeekMarketBeat has tracked 6 news articles for SELLAS Life Sciences Group this week, compared to 3 articles on an average week.Search Interest56 people have searched for SLS on MarketBeat in the last 30 days. This is an increase of 300% compared to the previous 30 days.MarketBeat Follows12 people have added SELLAS Life Sciences Group to their MarketBeat watchlist in the last 30 days. This is an increase of 200% compared to the previous 30 days. Company Ownership0.3 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, SELLAS Life Sciences Group insiders have not sold or bought any company stock.Percentage Held by Insiders1.40% of the stock of SELLAS Life Sciences Group is held by insiders.Percentage Held by Institutions17.38% of the stock of SELLAS Life Sciences Group is held by institutions.Read more about SELLAS Life Sciences Group's insider trading history. Receive SLS Stock News and Ratings via Email Sign-up to receive the latest news and ratings for SELLAS Life Sciences Group 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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SLS Stock News HeadlinesSLS Stock Extends Rally Overnight: CEO Says ‘Bullish’ Leukemia Data Could Drive NCCN Recognition For GPSMay 28 at 2:54 PM | finance.yahoo.comSellas Life Sciences: The Internal Inconsistency Of An Assumed Positive REGAL ReadoutMay 28 at 12:07 PM | seekingalpha.comRead this warning immediatelyPorter Stansberry, founder of one of the world's largest financial research firms, says he's breaking the biggest story of his 26-year career. A famous historian whose books have sold over 45 million copies in 65 languages is warning of a structural shift so large it has only one historical parallel - 1776. One Stanford economist calls it 'the biggest change ever - bigger than electricity, bigger than the steam engine.' Stansberry outlines the stocks to buy, the stocks to sell, and three money moves to position yourself on the right side of this shift.May 30 at 1:00 AM | Porter & Company (Ad)SLS stock surges toward fifth weekly rise: CEO touts GPS as lifeline for elderly patients as cancer summit loomsMay 27 at 1:29 PM | msn.comSLS Stock Heads For Its Best Month This Year Ahead Of Key AML Trial ReadoutMay 26, 2026 | finance.yahoo.comSLS stock heads for their best month this year ahead of key AML trial readoutMay 26, 2026 | msn.comSellas Life Sciences: REGAL Delay May Be A Warning Sign, Not A Bullish SignalMay 22, 2026 | seekingalpha.comSLS stock jumps premarket: CEO says GPS AML data has ‘very good chance’ to beat earlier survival outcomesMay 20, 2026 | msn.comSee More Headlines SLS Stock Analysis - Frequently Asked Questions How have SLS shares performed this year? SELLAS Life Sciences Group's stock was trading at $3.77 at the start of the year. Since then, SLS shares have increased by 146.9% and is now trading at $9.31. How were SELLAS Life Sciences Group's earnings last quarter? SELLAS Life Sciences Group, Inc. (NASDAQ:SLS) issued its earnings results on Tuesday, May, 12th. The company reported ($0.05) earnings per share (EPS) for the quarter, topping analysts' consensus estimates of ($0.06) by $0.01. When did SELLAS Life Sciences Group's stock split? SELLAS Life Sciences Group's stock reverse split before market open on Friday, November 8th 2019.The 1-50 reverse split was announced on Wednesday, November 6th 2019. The number of shares owned by shareholders was adjusted after the market closes on Thursday, November 7th 2019. An investor that had 100 shares of stock prior to the reverse split would have 2 shares after the split. Who are SELLAS Life Sciences Group's major shareholders? SELLAS Life Sciences Group's top institutional shareholders include Dagco Inc. (0.57%), Bank of America Corp DE (0.34%), Bank of New York Mellon Corp (0.26%) and Quantinno Capital Management LP (0.04%). Insiders that own company stock include Katherine Bach Kalin, Jane Wasman and Nostrand Robert L Van. View institutional ownership trends. How do I buy shares of SELLAS Life Sciences Group? Shares of SLS 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 SELLAS Life Sciences Group own? Based on aggregate information from My MarketBeat watchlists, some other companies that SELLAS Life Sciences Group investors own include Amgen (AMGN), Generex Biotechnology (GNBT), Salesforce (CRM), Bank of America (BAC), Bristol Myers Squibb (BMY) and AbbVie (ABBV). Company Calendar Last Earnings5/12/2026Today5/30/2026Next Earnings (Estimated)8/11/2026Fiscal 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. Green Zone (16m+) 1-Year History May 25 Aug 25 Nov 25 Feb 26 May 26 SLS's financial health is in the Green zone, according to TradeSmith. SLS has been in this zone for over 16 months. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry MED - BIOMED/GENE Sub-IndustryPharmaceutical Products Current SymbolNASDAQ:SLS CIK1390478 Webwww.sellaslifesciences.com Phone(646) 200-5278Fax441-400-2875Employees10Year Founded2006Price Target and Rating Average Price Target for SELLAS Life Sciences Group$10.00 High Price Target$10.00 Low Price Target$10.00 Potential Upside/Downside+7.4%Consensus RatingHold Rating Score (0-4)2.00 Research Coverage2 Analysts Profitability EPS (Trailing Twelve Months)($0.23) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$26.86 million Net MarginsN/A Pretax MarginN/A Return on Equity-47.12% Return on Assets-42.63% Debt Debt-to-Equity RatioN/A Current Ratio17.22 Quick Ratio17.22 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$0.58 per share Price / Book16.05Miscellaneous Outstanding Shares186,030,000Free Float183,429,000Market Cap$1.73 billion OptionableNot Optionable Beta2.24 Social Links The 7 Hottest IPOs On Wall Street’s 2026 WatchlistMarketBeat just released its list of the 7 hottest IPOs expected to hit Wall Street in 2026. See which companies are preparing to go public and why investors are watching closely.Get This Free Report This page (NASDAQ:SLS) was last updated on 5/30/2026 by MarketBeat.com Staff. 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