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Sellas Life Sciences Group, Inc. (SLS) stock

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NASDAQ: SLS Nasdaq Biotechnology Next results ~November 11, 2026

Sellas Life Sciences Group, Inc. is a US-listed company in the biotechnology industry. Its financial year ends in December.

Who’s trading

What company insiders, investment funds and members of Congress have been doing with the stock, from their own filings.

  • Insiders1 buying, 0 selling1 purchase and 0 sales by directors and officers, last 12 monthsInsider trades
  • Funds138 adding, 49 cuttingOf 29 active managers that changed their stake, 18 added; quarter to June 30, 2026Fund buyers and sellers

The Fundamentalytics view

Next results ~November 11, 2026 (estimated)

Current signal Results well short of expectations: Reported earnings per share missed the analysts' consensus estimate by 11% in the quarter to 2026-06-30.

Assembled from SEC-filed figures — the full workings are on this page and in our methodology. Observations, not recommendations.

Strengths

Nothing in Sellas Life Sciences Group, Inc.'s latest figures clears our strength thresholds.

Things to watch

  • Volatile shares. Over the past year the shares showed annualised volatility of 109% and a beta of 2.1 against the S&P 500.
  • Heavily shorted. 26.7% of the shares available to trade are sold short (10.3 days of average volume to cover).

Latest results

Earnings per share
-$0.05 against an average estimate of -$0.04: missed by 11.1%
Share reaction
+6.6% in the first session after the results on August 11, 2026, against -0.1% for the S&P 500
Next report
November 11, 2026; average EPS estimate -$0.05

Sellas Life Sciences Group's figures from its SEC filings and results release; estimates are the analysts' average. Not a recommendation.

Price chart

  • 1 day-11.7%
  • 1 week-24.6%
  • 1 month-27.2%
  • This year+126.8%
  • 1 year+369.8%
  • 5 years-7.0%
  • S&P 500 this year+11.2%

Closing prices to 2026-11-02. Price change only, dividends excluded.

Loading chart…

Third-party market data · may be delayed

At a glance

Trailing twelve months, from SEC filings

Earnings

Last results
August 11, 2026

News & updates

Updated October 31, 2026

Company announcements, filed results and changes that matter to shareholders.

  1. Results
  2. Results

Refreshed hourly when new source data is available. Summaries are checked against company releases and SEC filings. Company announcement headlines are labelled when a checked summary is unavailable.

No model value for Sellas Life Sciences Group, Inc. at the moment. Current status: limited reported history: available models are shown without a Buy/Hold/Sell rating. Available reported financials are shown below.

Fundamentalytics rating

model v1.6 · 2026-11-03

Not rated: limited reported history: available models are shown without a Buy/Hold/Sell rating.

Valuation models

We value Sellas Life Sciences Group, Inc. as an operating company, with every model that fits that kind of business. Cost of equity 9.4%: the 10-year Treasury yield (4.9%) plus a beta of 0.99 times a 4.5% equity risk premium.

Value per share by model
Model Value per share In the combined value?
Price-to-earnings vs peers Earnings per share times peers' typical (harmonic-mean) price-to-earnings. — Does not apply: no twelve-month earnings or share count in the filings yet
Residual income Book value plus the present value of returns above the cost of equity, fading over ten years. — Does not apply: no twelve-month earnings or share count in the filings yet
Justified price-to-book Book value times (return on equity - growth) / (cost of equity - growth): steady-state returns. — Does not apply: no twelve-month earnings or share count in the filings yet
Revenue-to-maturity model Revenue grown to maturity with the cash margin moving to the industry's; for companies not yet profitable. — Does not apply: revenue and margins don't support a positive value
Price-to-sales vs peers Sales per share times peers' typical price-to-sales; used only when earnings are negative. — Does not apply: no twelve-month earnings or share count in the filings yet
Combined value Weighted average of the models that apply: the primary model (price-to-earnings vs peers) counts double. Models more than 5x or less than 0.2x the share price, or more than 3x away from the other models' median, are left out. — No model applies: the filings don’t yet support a value.

Different models fail in different ways, so where several apply we average them rather than trust one. Peer-based models compare Sellas Life Sciences Group, Inc. with Biotechnology in our coverage, using third-party market data. Model values are estimates under stated assumptions, updated as new filings arrive; not price targets or investment advice. How each model works.

Moat

Not assessed: fewer than five years of comparable figures in the filings. AI disruption exposure for this industry: Medium.

A rules-based reading of reported figures, not a forecast and not investment advice. How the score is built: methodology.

Forecasts and guidance

Next results: November 11, 2026, after the close. Analysts expect revenue of $0 and EPS of −$0.05 (range −$0.05 to −$0.05) for the quarter.

Analysts' consensus

Sellas Life Sciences Group, Inc.: consensus estimates
Fiscal yearEPSGrowthRevenueGrowth
Current −$0.20 +20% — 0%
Next −$0.10 +50% $53m 0%

How the EPS forecast has moved

The consensus EPS forecast for the current fiscal year is −4.8% on 90 days ago. In the last 30 days, 0 analysts raised Sellas Life Sciences Group, Inc.'s forecast and 0 cut it.

Consensus EPS forecast Sellas Life Sciences Group, Inc., last 90 days
−$0.30 −$0.20 −$0.10 $0.00 90 days ago 60 days ago 30 days ago 7 days ago Now Current fiscal year, 90 days ago: −$0.21 Current fiscal year, 60 days ago: −$0.21 Current fiscal year, 30 days ago: −$0.21 Current fiscal year, 7 days ago: −$0.21 Current fiscal year, Now: −$0.20 −$0.20 Next fiscal year, 90 days ago: −$0.15 Next fiscal year, 60 days ago: −$0.15 Next fiscal year, 30 days ago: −$0.13 Next fiscal year, 7 days ago: −$0.13 Next fiscal year, Now: −$0.10 −$0.10

Average of analysts' published estimates (third-party data).

View chart data
Period Current fiscal yearNext fiscal year
90 days ago −$0.21−$0.15
60 days ago −$0.21−$0.15
30 days ago −$0.21−$0.13
7 days ago −$0.21−$0.13
Now −$0.20−$0.10

Earnings against estimates

Sellas Life Sciences Group, Inc.: reported EPS against the consensus estimate
Quarter toEstimateActualSurprise
Jun 2026 −$0.04 −$0.05 −11.1%
Dec 2025 −$0.06 −$0.05 +21.0%
Sept 2025 −$0.08 −$0.06 +21.7%

Adjusted EPS as companies report it, against the average analyst estimate.

Analyst recommendations

2 analysts, Oct 2026
Buy2100%
Hold00%
Sell00%

Monthly trend

  1. Oct 2026112
  2. Sep 2026112
  3. Aug 2026112

Counts of recommendations published by analysts covering Sellas Life Sciences Group, Inc., by month. Source: Aggregated broker recommendations (third-party data). Aggregated counts only: we do not reproduce any firm's recommendation or price target, and these are not Fundamentalytics ratings.

Positioning

Short interest
26.7%
of tradable shares
Days to cover
10.31
at average volume
Short interest, 1 month
−9%
to October 15, 2026
Held by institutions
37%
of shares
Held by insiders
0.9%
of shares
Employees
13
full time

Consensus figures average analysts' published estimates (third-party data); guidance is the company's own. Neither is our forecast. Short interest is reported twice a month and lags. Market data may be delayed.

This section is general information, not investment advice or a personal recommendation, and it does not take account of your objectives or circumstances. Forecasts and guidance are estimates, not promises: companies miss their own guidance and analysts' figures are often revised. Prices can fall as well as rise, and you can lose money. See our disclaimer.

Share-price performance

Market data may be delayed

Recent prices are available. Older price history and the statistics that need it are being loaded in the background.

Return and risk by year

Sellas Life Sciences Group, Inc.: yearly return, monthly win rate and worst fall against the S&P 500
Calendar year 202120222023202420252026 to date
Return
SLS−5%−57%−55%−2%+263%+127%
Industry peers (median)−36%−56%−17%−29%−5%−27%
S&P 500+29%−18%+26%+25%+18%+11%
Months that ended higher
SLS42%50%50%33%58%46%
S&P 50075%42%67%75%75%46%
Largest fall from a high during the year
SLS−61%−75%−77%−52%−37%−45%
S&P 500−5%−25%−10%−8%−19%−9%

Worst fall since November 2, 2015: 100% from June 20, 2016 to January 18, 2024. Getting back needed a 13352841% gain, and the shares have not yet recovered.

Price behaviour

52-week range
$1.39 – $15.46
From 52-week high
−44.7%
vs 50-day average
−28.9%
vs 200-day average
−0.5%
Volatility (1 year)
109%
Beta vs S&P 500
2.14

Volatility is the annualised standard deviation of daily returns. Beta 1.5 means the shares typically moved 1.5% for each 1% move in the S&P 500 over the past year. Prices to November 2, 2026.

Share price after results

Next day
5 up, 7 down
typical move ±6.8%
After a week
7 up, 5 down
typical move ±11.1%
After a month
10 up, 2 down
typical move ±18.8%
Sellas Life Sciences Group, Inc.: share-price change after each results release
Results releasedNext dayS&P 500 next day5 days21 days
August 11, 2026 +6.6% −0.1% +18.7% +22.2%
July 27, 2026 −10.9% +0.3% −0.9% +24.5%
May 12, 2026 +24.4% +0.4% +44.6% +47.6%
March 19, 2026 −3.8% −1.7% 0.0% +0.8%
January 8, 2026 −14.4% +0.7% −5.0% −5.7%
November 12, 2025 −3.3% −1.6% +0.7% +34.4%
August 12, 2025 +0.6% +1.4% +10.4% +22.7%
May 13, 2025 −1.9% +0.8% +26.0% +7.1%
March 20, 2025 −0.8% −0.3% −4.1% +6.6%
November 13, 2024 −5.9% −0.6% −8.1% −35.6%
August 13, 2024 +1.7% +2.0% +11.0% +12.7%
May 14, 2024 +7.3% +1.7% +3.6% +5.8%

From the close before the release date to the close 1, 5 and 21 trading days after it, so releases before the open and after the close are both captured. Past moves don't predict future ones.

Fundamentals

Data: SEC EDGAR XBRL company facts (as filed in 10-K/10-Q); forms . Generated November 3, 2026. Definitions in our methodology.

Reported value
$1.1B
Institutions reporting
191
Shares held vs prior quarter
▲ 36.8%
Positions opened / closed
60 / 25

Top buyers and sellers, Q2 2026: 138 institutions bought and 49 sold ; the biggest buyer was State Street Corp (+4.6M shares) and the biggest seller Marshall Wace, LLP (−2.0M). See which funds bought and sold →

Largest reported holders, June 30, 2026
Manager Value Shares Share of 13F value Shares QoQ
Blackrock, Inc. $222M 15.1M 20.6% ▲ 23.5%
State Street Corp $192M 13.0M 17.8% ▲ 54.8%
Vanguard Capital Management LLC $121M 8.2M 11.2% ▲ 9.3%
Geode Capital Management, LLC $72.1M 4.9M 6.7% ▲ 24.8%
Anson Funds Management LP $66.4M 4.5M 6.2% New
Vanguard Portfolio Management LLC $31.9M 2.2M 3.0% ▲ 47.7%
Susquehanna International Group, LLP $30.3M 2.1M 2.8% ▲ 416.5%
Jones Financial Companies LLLP $28.6M 2.3M 2.6% ▲ 37.6%
Northern Trust Corp $23.9M 1.6M 2.2% ▲ 27.0%
Vanguard Fiduciary Trust Co $19.7M 1.3M 1.8% ▲ 11.0%
UBS Group AG $18.5M 1.3M 1.7% ▲ 68.1%
Morgan Stanley $18.2M 1.2M 1.7% ▼ 7.5%

From Form 13F filings with the SEC ( quarterly data sets), as reported by each manager for June 30, 2026 and filed up to 45 days later. 13F reports cover long US-listed positions of managers above $100M only, so this is not Sellas Life Sciences Group, Inc.'s complete shareholder register. Values are as reported by the filers .

Insider trading activity

Full insider history and chart
Recent insider open-market transactions
Insider Date Trade Shares Price Value
Kalin Katherine Bach Director November 19, 2025 Buy 63,400 $1.59 $100,806

From insiders' Form 4 filings with the SEC. Excludes awards, option exercises and shares withheld for tax. "Pre-set plan" means the filing marks the trade as made under a Rule 10b5-1 plan. See every insider trade since five years ago, on a price chart.

Earnings dates and SEC filings

Results announcements

  • August 11, 2026
  • July 27, 2026
  • May 12, 2026
  • March 19, 2026
  • January 8, 2026
  • November 12, 2025

Recent SEC filings

Data status

When each part of this page on Sellas Life Sciences Group, Inc. was last updated.

DataLast updatedSource
Share priceExchange closing prices
News and updatesCompany releases and SEC 8-K filings
Analyst estimatesAggregated analyst estimates
Valuation and scoresOur models, from the filed figures

How we build and check these figures: methodology and data sources.

Sellas Life Sciences Group, Inc. in brief

What does Sellas Life Sciences Group, Inc. do?
Sellas Life Sciences Group, Inc. is a US-listed company in the biotechnology industry. Its financial year ends in December.
What is Sellas Life Sciences Group, Inc.'s stock ticker?
Sellas Life Sciences Group, Inc. trades under the ticker SLS on Nasdaq. This page brings together its financial statements, valuation models, ownership and recent company updates.
Who are Sellas Life Sciences Group, Inc.'s largest institutional shareholders?
By value reported in 13F filings for June 30, 2026, the largest reported holders are Blackrock, Inc., State Street Corp and Vanguard Capital Management LLC. 13F reports cover long US-listed positions of managers above $100M, filed up to 45 days after quarter end.
Are insiders buying or selling Sellas Life Sciences Group, Inc. stock?
Over the last 12 months, Sellas Life Sciences Group, Inc.'s directors and officers reported 1 open-market purchases and 0 sales on Form 4. The insider trading page charts every trade.
When is Sellas Life Sciences Group, Inc.'s next earnings date?
Around November 11, 2026, estimated from the spacing of its past results announcements (8-K filings). That is an estimate, not a confirmed date — Sellas Life Sciences Group, Inc. announces its own schedule.