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NASDAQ:SLS

SELLAS Life Sciences Group (SLS) Stock Price, News & Analysis

SELLAS Life Sciences Group logo
$15.46 +2.06 (+15.37%)
As of 08/21/2026 04:00 PM Eastern

About SELLAS Life Sciences Group Stock (NASDAQ:SLS)

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Key Stats

Today's Range
$13.26
$15.67
50-Day Range
$7.53
$15.46
52-Week Range
$1.39
$15.88
Volume
15.20 million shs
Average Volume
6.14 million shs
Market Capitalization
$3.12 billion
P/E Ratio
N/A
Dividend Yield
N/A
Price Target
$10.00
Consensus Rating
Hold

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.

SELLAS Life Sciences Group Stock Analysis - MarketRank™

See Top-Rated MarketRank™ Stocks
16th Percentile Overall Score

SLS MarketRank™: 

SELLAS Life Sciences Group scored higher than 16% of companies evaluated by MarketBeat, and ranked 838th out of 913 stocks in the healthcare sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation.

  • Consensus Rating

    SELLAS Life Sciences Group 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.

  • Downside Risk

    SELLAS Life Sciences Group has a consensus price target of $10.00, representing about 35.3% downside from its current price of $15.46.

  • Amount of Analyst Coverage

    SELLAS 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.
  • Price to Earnings Ratio vs. the Market

    The P/E ratio of SELLAS Life Sciences Group is -73.62, 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. Sector

    The P/E ratio of SELLAS Life Sciences Group is -73.62, 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 Ratio

    SELLAS Life Sciences Group has a P/B Ratio of 22.74. 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.
  • Percentage of Shares Shorted

    28.33% of the float of SELLAS Life Sciences Group has been sold short.
  • Short Interest Ratio / Days to Cover

    SELLAS Life Sciences Group has a short interest ratio ("days to cover") of 7.89.
  • Change versus previous month

    Short interest in SELLAS Life Sciences Group has recently decreased by 0.55%, indicating that investor sentiment is improving.
  • Dividend Yield

    SELLAS Life Sciences Group does not currently pay a dividend.

  • Dividend Growth

    SELLAS Life Sciences Group does not have a long track record of dividend growth.

  • News Sentiment

    SELLAS Life Sciences Group has a news sentiment score of 0.46. 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 0.64 average news sentiment score of Healthcare companies.
  • News Coverage This Week

    MarketBeat has tracked 8 news articles for SELLAS Life Sciences Group this week, compared to 3 articles on an average week.
  • Search Interest

    Only 26 people have searched for SLS on MarketBeat in the last 30 days. This is a decrease of -54% compared to the previous 30 days.
  • MarketBeat Follows

    21 people have added SELLAS Life Sciences Group to their MarketBeat watchlist in the last 30 days. This is an increase of 75% compared to the previous 30 days.
  • Insider Buying vs. Insider Selling

    In the past three months, SELLAS Life Sciences Group insiders have not sold or bought any company stock.

  • Percentage Held by Insiders

    1.30% of the stock of SELLAS Life Sciences Group is held by insiders.

  • Percentage Held by Institutions

    17.38% of the stock of SELLAS Life Sciences Group is held by institutions.

  • Read more about SELLAS Life Sciences Group's insider trading history.
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SLS Stock News Headlines

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SLS Stock Analysis - Frequently Asked Questions

SELLAS Life Sciences Group's stock was trading at $3.77 at the beginning of 2026. Since then, SLS stock has increased by 310.1% and is now trading at $15.46.

SELLAS Life Sciences Group, Inc. (NASDAQ:SLS) issued its earnings results on Tuesday, August, 11th. The company reported ($0.05) earnings per share (EPS) for the quarter, missing the consensus estimate of ($0.05) by $0.01.

SELLAS Life Sciences Group's stock reverse split on the morning of 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.

Top institutional shareholders of SELLAS Life Sciences Group include Dagco Inc. (0.63%), Wellington Management Group LLP (0.30%), Bank of New York Mellon Corp (0.27%) and Everhart Financial Group Inc. (0.15%). Insiders that own company stock include Katherine Bach Kalin, Jane Wasman and Nostrand Robert L Van.
View institutional ownership trends
.

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.

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 Earnings
8/11/2026
Today
8/23/2026
Next Earnings (Estimated)
11/11/2026
Fiscal Year End
12/31/2026

Industry, Sector and Symbol

Stock Exchange
NASDAQ
Industry
Biotechnology
Sub-Industry
Biotechnology
Current Symbol
NASDAQ:SLS
CIK
1390478
Employees
10
Year Founded
2006

Price Target and Rating

High Price Target
$10.00
Low Price Target
$10.00
Potential Upside/Downside
-35.3%
Consensus Rating
Hold
Rating Score (0-4)
2.33
Research Coverage
3 Analysts

Profitability

EPS (Trailing Twelve Months)
($0.21)
Trailing P/E Ratio
N/A
Forward P/E Ratio
N/A
P/E Growth
N/A
Net Income
-$26.86 million
Net Margins
N/A
Pretax Margin
N/A
Return on Equity
-35.91%
Return on Assets
-33.34%

Debt

Debt-to-Equity Ratio
N/A
Current Ratio
18.83
Quick Ratio
18.83

Sales & Book Value

Annual Sales
N/A
Price / Sales
N/A
Cash Flow
N/A
Price / Cash Flow
N/A
Book Value
$0.68 per share
Price / Book
22.74

Miscellaneous

Outstanding Shares
201,950,000
Free Float
199,321,000
Market Cap
$3.12 billion
Optionable
Not Optionable
Beta
2.48

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This page (NASDAQ:SLS) was last updated on 8/23/2026 by MarketBeat.com Staff.
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