SELLAS Life Sciences Group, Inc.
SLS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001390478
No open-market purchases or sales by SELLAS Life Sciences Group, Inc. insiders were filed in the last 90 days; 193 institutions reported holding it in 13F filings for Q2 2026, worth $1.08B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in SELLAS Life Sciences Group, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 160
- +51 vs. Q4 2025
- Shares held
- 54.0M
- +27.0M (+100.0%) vs. Q4 2025
- Total value
- $228.4M
- +$126.6M (+124.4%) vs. Q4 2025
- New holders
- 67
- 53 more added
- Sold out
- 16
- 18 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SLS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 193 | $1.08B |
| Q1 2026 | 160 | $228.4M |
| Q4 2025 | 112 | $133.7M |
| Q3 2025 | 94 | $53.1M |
| Q2 2025 | 79 | $58.7M |
| Q1 2025 | 45 | $15.5M |
| Q4 2024 | 31 | $6.47M |
| Q3 2024 | 33 | $6.76M |
| Q2 2024 | 30 | $4.86M |
| Q1 2024 | 30 | $7.82M |
| Q4 2023 | 31 | $3.72M |
| Q3 2023 | 28 | $4.54M |
| Q2 2023 | 25 | $4.91M |
| Q1 2023 | 22 | $4.28M |
| Q4 2022 | 29 | $4.46M |
| Q3 2022 | 28 | $4.42M |
| Q2 2022 | 26 | $6.64M |
| Q1 2022 | 26 | $11.3M |
| Q4 2021 | 27 | $9.59M |
| Q3 2021 | 30 | $17.1M |
| Q2 2021 | 29 | $21.3M |
| Q1 2021 | 31 | $13.3M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding SELLAS Life Sciences Group, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Two Sigma Securities, LLC | 14,437 | $61.1K | 0.01% | −42,668−74.7% | Reduced |
| Ameritas Investment Partners, Inc. | 14,065 | $59.5K | 0.00% | +4,321+44.3% | Added |
| Blair William & Co | 14,005 | $59.2K | 0.00% | −11,997−46.1% | Reduced |
| CWM, LLC | 13,275 | $56.2K | 0.00% | +1,493+12.7% | Added |
| Ewa, LLC | 12,796 | $54.1K | 0.01% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 12,435 | $53.0K | 0.00% | 00.0% | Unchanged |
| Principal Financial Group Inc | 12,429 | $52.6K | 0.00% | +12,429 | New |
| Verition Fund Management LLC | 12,262 | $51.9K | 0.00% | +12,262 | New |
| Stifel Financial Corp | 11,536 | $48.8K | 0.00% | −1,500−11.5% | Reduced |
| Wealthfront Advisers LLC | 11,436 | $48.4K | 0.00% | +11,436 | New |
| Calton & Associates, Inc. | 11,000 | $46.5K | 0.01% | 00.0% | Unchanged |
| Wiley Bros.-Aintree Capital, LLC | 10,941 | $46.3K | 0.00% | +10,941 | New |
| Envestnet Asset Management Inc | 10,941 | $46.3K | 0.00% | +10,941 | New |
| Marex Group plc | 10,833 | $45.8K | 0.00% | +10,833 | New |
| GTS Securities LLC | 10,329 | $43.7K | 0.00% | +10,329 | New |
| Concurrent Investment Advisors, LLC | 10,085 | $42.7K | 0.00% | 00.0% | Unchanged |
| Integrated Wealth Concepts LLC | 10,011 | $42.3K | 0.00% | +10,011 | New |
| Nemes Rush Group LLC | 10,000 | $42.3K | 0.00% | 00.0% | Unchanged |
| Private Wealth Management Group, LLC | 10,000 | $42.3K | 0.01% | 00.0% | Unchanged |
| First Financial Bank - Trust Division | 10,000 | $42.3K | 0.00% | +10,000 | New |
| California State Teachers Retirement System | 9,337 | $39.5K | 0.00% | +1,709+22.4% | Added |
| Larson Financial Group LLC | 7,013 | $29.7K | 0.00% | +20+0.3% | Added |
| Clearstead Advisors, LLC | 6,548 | $27.7K | 0.00% | +6,548 | New |
| Quent Capital, LLC | 5,088 | $21.5K | 0.00% | +5,088 | New |
| Rockefeller Capital Management L.P. | 5,000 | $21.1K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 4,171 | $18.0K | 0.00% | −3,480−45.5% | Reduced |
| Nisa Investment Advisors, LLC | 2,600 | $11.0K | 0.00% | +2,600 | New |
| Colonial Trust Advisors | 2,516 | $10.6K | 0.00% | +2,516 | New |
| Bellevue Asset Management, LLC | 2,512 | $10.6K | 0.01% | +2,512 | New |
| National Bank of Canada | 2,387 | $10.0K | 0.00% | +2,387 | New |
| Farther Finance Advisors, LLC | 2,360 | $9.94K | 0.00% | +2,010+574.3% | Added |
| Daiwa Securities Group Inc. | 2,200 | $9.31K | 0.00% | +2,200 | New |
| SBI Securities Co., Ltd. | 2,186 | $9.25K | 0.00% | −1,405−39.1% | Reduced |
| Glen Eagle Advisors, LLC | 2,176 | $9.20K | 0.00% | +2,176 | New |
| Quantbot Technologies LP | 2,049 | $8.67K | 0.00% | +2,049 | New |
| Atlantic Private Wealth, LLC | 2,000 | $8.46K | 0.01% | +2,000 | New |
| Marathon Trading Investment Management LLC | 1,191 | $5.04K | 0.00% | +1,191 | New |
| Sterling Capital Management LLC | 1,116 | $4.72K | 0.00% | +326+41.3% | Added |
| Quadrant Capital Group LLC | 1,059 | $4.48K | 0.00% | +1,059 | New |
| IFP Advisors, Inc | 925 | $3.91K | 0.00% | +925 | New |
| GAMMA Investing LLC | 815 | $3.45K | 0.00% | +443+119.1% | Added |
| Financial Consulate, Inc | 600 | $2.54K | 0.00% | +600 | New |
| Avion Wealth | 573 | $2.00K | 0.00% | 00.0% | Unchanged |
| Sunbelt Securities, Inc. | 395 | $1.67K | 0.00% | +395 | New |
| GWM Advisors LLC | 300 | $1.27K | 0.00% | +300 | New |
| The PNC Financial Services Group, Inc. | 289 | $1.22K | 0.00% | +6+2.1% | Added |
| Fortitude Family Office, LLC | 259 | $1.10K | 0.00% | +259 | New |
| Signaturefd, LLC | 172 | $728 | 0.00% | +172 | New |
| Strategic Wealth Partners, Ltd. | 150 | $635 | 0.00% | +150 | New |
| Rothschild Investment LLC | 127 | $537 | 0.00% | +106+504.8% | Added |
| Caldwell Sutter Capital, Inc. | 100 | $423 | 0.00% | 00.0% | Unchanged |
| Root Financial Partners, LLC | 60 | $254 | 0.00% | +60 | New |
| Twin Peaks Wealth Advisors, LLC | 40 | $169 | 0.00% | +40 | New |
| Allworth Financial LP | 26 | $110 | 0.00% | +26 | New |
| EverSource Wealth Advisors, LLC | 22 | $93 | 0.00% | +22 | New |
| Keating Financial Advisory Services, Inc. | 7 | $30 | 0.00% | +7 | New |
| Parkside Financial Bank & Trust | 2 | $9 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 2 | $9 | 0.00% | +2 | New |
| Bogart Wealth, LLC | 2 | $8 | 0.00% | +2 | New |
| Hughes Financial Services, LLC | 1 | $4 | 0.00% | +1 | New |
| Clear Street Group Inc. | 0 | $0 | 0.00% | −500,000−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −118,440−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −76,554−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −59,536−100.0% | Sold out |
| Tyche Wealth Partners LLC | 0 | $0 | 0.00% | −37,500−100.0% | Sold out |
| Regal Investment Advisors LLC | 0 | $0 | 0.00% | −35,900−100.0% | Sold out |
| Equitable Holdings, Inc. | 0 | $0 | 0.00% | −32,060−100.0% | Sold out |
| Trustmark National Bank Trust Department | 0 | $0 | 0.00% | −24,000−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −13,800−100.0% | Sold out |
| Money Concepts Capital Corp | 0 | $0 | 0.00% | −10,600−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −10,100−100.0% | Sold out |
| Beacon Pointe Advisors, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −3,892−100.0% | Sold out |
| Strengthening Families & Communities, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| NVWM, LLC | 0 | $0 | 0.00% | −201−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| Motiv8 Investments LLC | – | – | – | – | Not filed |