SLS
Sellas Life Sciences Group IncNASDAQ
Healthcare • Biotechnology
Factor tilt: Small-Cap Blend
$8.42+6.85%
Close Nov 6, 2026
- Market cap
- $1.57B
- 1 month
- -25.2%
- 3 months
- -23.7%
- 1 year
- +401.2%
- 52-week range
- $1.39$15.46
- Dividend, last 12 mo
- None in the last year
- Last ex-date
- Mar 24, 2011 · $0.2403
- Short interest
- 26.7% of float53.8M shares · settled Oct 15, 2026 · -2.5% since Sep 30, 2026 · FINRA
Fundamentals · trailing 12 months to Jun 30, 2026
- Revenue
- —
- Net income
- -$32.46M
- Free cash flow
- -$28.42M
- Book value
- $137.66M
- Total debt
- $737K
- P/E
- —
- Price / sales
- —
- Price / book
- 11.4×
- FCF yield
- -1.8%
- Net margin
- —
EODHD (TTM) · as of Nov 6, 2026
End-of-day close from stored market data, not a live quote.
About Sellas Life Sciences Group Inc
SELLAS Life Sciences Group, Inc., a late-stage clinical biopharmaceutical company, focuses on the development of novel therapeutics for various cancer indications in the United States. The company's lead product candidate is galinpepimut-S (GPS), a peptide immunotherapy directed against the Wilms tumor 1, antigen; and SLS009 (tambiciclib), a selective small molecule cyclin-dependent kinase 9, or CDK9, inhibitor.
Read more
It has a strategic collaboration with Merck & Co., Inc. to evaluate GPS as it is administered in combination with PD1 blocker pembrolizumab in a Phase 1/2 clinical trial enrolling patients in up to five cancer indications, including hematologic malignancies and solid tumors; GenFleet Therapeutics (Shanghai), Inc. for the development and commercialization of GFH009; and Memorial Sloan Kettering Cancer Center for developing and commercializing MSK's WT1 peptide vaccine technology. SELLAS Life Sciences Group, Inc. is headquartered in New York, New York.
- Website
- sellaslifesciences.com
- Headquarters
- New York, NY, United States
- Employees
- 13
- Listed
- Dec 29, 2017
- Fiscal year ends
- December
Company profile from EODHD, stored Oct 26, 2026.
Quarterly results
The last 8 fiscal quarters as reported (EODHD). Year over year compares the same quarter a year earlier.
| Quarter | Revenue | YoY | Gross margin | Op. income | Net income |
|---|---|---|---|---|---|
| Jun 2026filed Aug 11, 2026 | — | — | — | -$10.6M | -$9.6M |
| Mar 2026filed May 12, 2026 | — | — | — | -$9.3M | -$8.4M |
| Dec 2025filed Mar 19, 2026 | — | — | — | -$8.3M | -$7.7M |
| Sep 2025filed Nov 12, 2025 | — | — | — | -$7.1M | -$6.8M |
| Jun 2025filed Aug 12, 2025 | — | — | — | -$6.9M | -$6.6M |
| Mar 2025filed May 13, 2025 | — | — | — | -$6.1M | -$5.8M |
| Dec 2024filed Mar 20, 2025 | — | — | — | -$6.9M | -$6.7M |
| Sep 2024filed Nov 13, 2024 | — | — | — | -$7.3M | -$7.1M |
Fiscal years · last 6
| Fiscal year | Revenue | YoY | Gross margin | Op. income | Net income |
|---|---|---|---|---|---|
| Dec 2025filed Mar 19, 2026 | — | — | — | -$28.3M | -$26.9M |
| Dec 2024filed Mar 20, 2025 | — | — | — | -$31.5M | -$30.9M |
| Dec 2023filed Dec 31, 2023 | — | — | — | -$37.9M | -$37.3M |
| Dec 2022filed Mar 16, 2023 | $1.0M | -86.8% | 90.0% | -$42.0M | -$41.3M |
| Dec 2021filed Mar 31, 2022 | $7.6M | +399,900.0% | 97.4% | -$25.3M | -$20.7M |
| Dec 2020filed Mar 23, 2021 | $1.9K | — | — | -$17.0M | -$16.8M |
Short-interest history
FINRA reports open short positions for a settlement date. The publication date is later. These are reported positions, with a separate date for each observation.
Compare the reported short exposure around the dates you bought, sold or watched SLS. A long position benefits from price rises; a short position benefits from falls. A change in these counts does not predict either move.
Settlement Oct 15, 2026
53,759,252 shares short
-1,369,722 shares (-2.5%) vs Sep 30, 2026
26.7% of the stored float. Published Oct 26, 2026.
Settlement Sep 30, 2026
55,128,974 shares short
-3,939,656 shares (-6.7%) vs Sep 15, 2026
27.4% of the stored float. Published Oct 9, 2026.
Settlement Sep 15, 2026
59,068,630 shares short
+1,141,718 shares (+2%) vs Aug 31, 2026
31.9% of the stored float. Published Sep 24, 2026.
Settlement Aug 31, 2026
57,926,912 shares short
+1,555,047 shares (+2.8%) vs Aug 14, 2026
31.3% of the stored float. Published Sep 10, 2026.
Settlement Aug 14, 2026
56,371,865 shares short
+1,396,050 shares (+2.5%) vs Jul 31, 2026
30.4% of the stored float. Published Aug 25, 2026.
Settlement Jul 31, 2026
54,975,815 shares short
-305,054 shares (-0.6%) vs Jul 15, 2026
29.7% of the stored float. Published Aug 11, 2026.
Change = this settlement’s shares short − the previous recorded settlement’s shares short; percentage change divides by that earlier count. A zero earlier count has no percentage change. Split-spanning counts are left uncompared. Float percentages use the stored settlement observation, not today’s float.
Source: stored FINRA equity short-interest records, up to six settlements from the last 240 days. FINRA data and reporting dates · How to read short interest
Dividends and stock splits
See the recorded cash amounts and dates behind SLS’s income, and the splits that change its share count. Dates below are stored event records, not confirmation of a payment to your account.
Cash-dividend records
The newest stored ex-date is Mar 24, 2011. These are historical records; a current dividend schedule is unavailable.
USD 0.2403 per share
Ex-dividend date: Mar 24, 2011
Recorded pay date: Apr 5, 2011 (past date)
Cash dividend · Polygon event record
USD 0.4213 per share
Ex-dividend date: Dec 9, 2010
Recorded pay date: Dec 20, 2010 (past date)
Cash dividend · Polygon event record
USD 0.15 per share
Ex-dividend date: Sep 9, 2010
Recorded pay date: Sep 22, 2010 (past date)
Cash dividend · Polygon event record
USD 0.085 per share
Ex-dividend date: Jun 10, 2010
Recorded pay date: Jun 21, 2010 (past date)
Cash dividend · Polygon event record
USD 0.085 per share
Ex-dividend date: Mar 18, 2010
Recorded pay date: Mar 29, 2010 (past date)
Cash dividend · Polygon event record
USD 0.359 per share
Ex-dividend date: Dec 10, 2009
Recorded pay date: Dec 21, 2009 (past date)
Cash dividend · Polygon event record
Up to six Polygon cash-dividend events, including recorded ex-dates within the next 120 days. Amounts retain their recorded currency and decimal precision. Historical amounts are not restated to a common split basis, annualized, or converted to dollars.
For a long holding, compare the ex-date with when you held the shares and check the pay date against your broker’s cash history. Owning the stock today does not establish past entitlement. For a short holding, a dividend can create a payment obligation to the share lender.
Ex-dates and special dividend rules · Short-sale dividend obligations · Dividend data definitions
Split history
1 for 50 · reverse split
Effective Nov 8, 2019
Each 50 pre-split shares become 1 post-split share.
Source: EODHD
1 for 30 · reverse split
Effective Jan 2, 2018
Each 30 pre-split shares become 1 post-split share.
Source: EODHD
1 for 20 · reverse split
Effective Nov 14, 2016
Each 20 pre-split shares become 1 post-split share.
Source: EODHD
Up to six stored split dates through Nov 7, 2026. Equivalent vendor ratios are combined; conflicting ratios are left out. This history may be incomplete.
A split changes the share count and per-share price basis; it does not by itself add investment value. Put your holding’s earlier and later share counts on the same basis before comparing them. This applies to both long shares and shares owed on a short position.
How stock splits workPortfolio context
Sign in to see your position size
We’ll show you if SLS is in your portfolio and how much it contributes.
Sign inMarket context
Loading market dates
Smart money context
Holder IQ: MEDIUM
18 smart-money holders: institutions with a high Holder IQ
Q2 2026, filed Oct 27, 2026
Insider context
Sentiment: unknown
No recent insider trades detected.
Read the insider context evidence
What it means for you
Sign in to read your holdings or watchlist context. No personal position or direction is inferred.
What happened
No directional recent-activity label is available. This context label is separate from the scored insider signal read.
Why it can matter
A count of reported activity describes a sample, not purchase conviction, an insider’s intent or a future price move. Neutral is not an all-clear, and absent direction is not neutral evidence.
How we got this
The current context rule reads at most 50 nonduplicate issuer/share-class records filed in the last 90 days. It counts a bullish direction or purchase code P toward bullish, and a bearish direction or sale code S toward bearish. A side must exceed the opposite count by more than two to set its label; otherwise nonzero directional counts produce neutral. Calculation unavailable for this saved label: its counts, exact records, as-of time and rule version are not supplied here. Do not substitute the separate scored read’s different window or denominator.
Where the data comes from
Stored SEC Forms 3/4/5 insider-signal records, ordered by filing date with amendment duplicates excluded. Filing date is not transaction date. The last-trade line locates recent reported activity; it does not date or reconstruct the complete count.
Red flags: 0
Read the insider context evidence
What it means for you
Sign in to read your holdings or watchlist context. No personal position or direction is inferred.
What happened
No directional recent-activity label is available. This context label is separate from the scored insider signal read.
Why it can matter
A count of reported activity describes a sample, not purchase conviction, an insider’s intent or a future price move. Neutral is not an all-clear, and absent direction is not neutral evidence.
How we got this
The current context rule reads at most 50 nonduplicate issuer/share-class records filed in the last 90 days. It counts a bullish direction or purchase code P toward bullish, and a bearish direction or sale code S toward bearish. A side must exceed the opposite count by more than two to set its label; otherwise nonzero directional counts produce neutral. Calculation unavailable for this saved label: its counts, exact records, as-of time and rule version are not supplied here. Do not substitute the separate scored read’s different window or denominator.
Where the data comes from
Stored SEC Forms 3/4/5 insider-signal records, ordered by filing date with amendment duplicates excluded. Filing date is not transaction date. The last-trade line locates recent reported activity; it does not date or reconstruct the complete count.
Largest 13-F holders · Q2 2026
194 filers reported a long position in SLS for Q2 2026. 13-F holdings are filed up to 45 days after the quarter ends.
The top 10 hold
74.8%
of the 73.8M shares 13-F filers reported
Moves vs Q1 2026
9 added0 trimmed
1 new
Net shares held
+33.1%
across the 9 holders with a comparable Q1 2026 book
| Rank | Holder | Value | Shares | Shares vs Q1 2026 |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $222.4M · 15.1M shares | 15.1M | +23.5% |
| 2 | STATE STREET CORP | $191.8M · 13M shares | 13M | +54.8% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $121.4M · 8.2M shares | 8.2M | +9.3% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | $72.1M · 4.9M shares | 4.9M | +24.8% |
| 5 | Anson Funds Management LP | $66.4M · 4.5M shares | 4.5M | New |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | $31.9M · 2.2M shares | 2.2M | +47.7% |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $30.3M · 2.1M shares | 2.1M | +416.5% |
| 8 | JONES FINANCIAL COMPANIES LLLP | $28.6M · 2.3M shares | 2.3M | +37.6% |
| 9 | NORTHERN TRUST CORP | $23.9M · 1.6M shares | 1.6M | +27% |
| 10 | VANGUARD FIDUCIARY TRUST CO | $19.7M · 1.3M shares | 1.3M | +11% |
Sign in to see each holder’s Holder IQ, factor-adjusted Holder IQ and rank, and compare these holders with all scored filers. Available on every plan.
Sign in5% holder filings (13D / 13G)
Holders of more than 5% of SLS file with the SEC within days. A 13D holder may seek to influence the company; a 13G holder is passive. Each holder’s latest filing from the last three years.
| Filed | Holder | % of class |
|---|---|---|
| Oct 27, 2026 | BlackRock, Inc.13G · passive · amended | 7.9% |
| Aug 7, 2026 | STATE STREET CORP13G · passive | 7% |
| Jul 31, 2026 | VANGUARD CAPITAL MANAGEMENT LLC13G · passive | 5.19% |
| Mar 27, 2026 | VANGUARD GROUP INC13G · passive · amended | 0%under 5% |
Get the Full Analysis for SLS
Unlock detailed insider transactions, institutional holder changes, factor exposures, and personalized alerts. Start free with your own portfolio.