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 |
|---|---|---|---|---|---|
| Hughes Financial Services, LLC | 1 | $4 | 0.00% | +1 | New |
| Bogart Wealth, LLC | 2 | $8 | 0.00% | +2 | New |
| Parkside Financial Bank & Trust | 2 | $9 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 2 | $9 | 0.00% | +2 | New |
| Keating Financial Advisory Services, Inc. | 7 | $30 | 0.00% | +7 | New |
| EverSource Wealth Advisors, LLC | 22 | $93 | 0.00% | +22 | New |
| Allworth Financial LP | 26 | $110 | 0.00% | +26 | New |
| Twin Peaks Wealth Advisors, LLC | 40 | $169 | 0.00% | +40 | New |
| Root Financial Partners, LLC | 60 | $254 | 0.00% | +60 | New |
| Caldwell Sutter Capital, Inc. | 100 | $423 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 127 | $537 | 0.00% | +106+504.8% | Added |
| Strategic Wealth Partners, Ltd. | 150 | $635 | 0.00% | +150 | New |
| Signaturefd, LLC | 172 | $728 | 0.00% | +172 | New |
| Fortitude Family Office, LLC | 259 | $1.10K | 0.00% | +259 | New |
| The PNC Financial Services Group, Inc. | 289 | $1.22K | 0.00% | +6+2.1% | Added |
| GWM Advisors LLC | 300 | $1.27K | 0.00% | +300 | New |
| Sunbelt Securities, Inc. | 395 | $1.67K | 0.00% | +395 | New |
| Avion Wealth | 573 | $2.00K | 0.00% | 00.0% | Unchanged |
| Financial Consulate, Inc | 600 | $2.54K | 0.00% | +600 | New |
| GAMMA Investing LLC | 815 | $3.45K | 0.00% | +443+119.1% | Added |
| IFP Advisors, Inc | 925 | $3.91K | 0.00% | +925 | New |
| Quadrant Capital Group LLC | 1,059 | $4.48K | 0.00% | +1,059 | New |
| Sterling Capital Management LLC | 1,116 | $4.72K | 0.00% | +326+41.3% | Added |
| Marathon Trading Investment Management LLC | 1,191 | $5.04K | 0.00% | +1,191 | New |
| Atlantic Private Wealth, LLC | 2,000 | $8.46K | 0.01% | +2,000 | New |
| Quantbot Technologies LP | 2,049 | $8.67K | 0.00% | +2,049 | New |
| Glen Eagle Advisors, LLC | 2,176 | $9.20K | 0.00% | +2,176 | New |
| SBI Securities Co., Ltd. | 2,186 | $9.25K | 0.00% | −1,405−39.1% | Reduced |
| Daiwa Securities Group Inc. | 2,200 | $9.31K | 0.00% | +2,200 | New |
| Farther Finance Advisors, LLC | 2,360 | $9.94K | 0.00% | +2,010+574.3% | Added |
| National Bank of Canada | 2,387 | $10.0K | 0.00% | +2,387 | New |
| Bellevue Asset Management, LLC | 2,512 | $10.6K | 0.01% | +2,512 | New |
| Colonial Trust Advisors | 2,516 | $10.6K | 0.00% | +2,516 | New |
| Nisa Investment Advisors, LLC | 2,600 | $11.0K | 0.00% | +2,600 | New |
| Royal Bank of Canada | 4,171 | $18.0K | 0.00% | −3,480−45.5% | Reduced |
| Rockefeller Capital Management L.P. | 5,000 | $21.1K | 0.00% | 00.0% | Unchanged |
| Quent Capital, LLC | 5,088 | $21.5K | 0.00% | +5,088 | New |
| Clearstead Advisors, LLC | 6,548 | $27.7K | 0.00% | +6,548 | New |
| Larson Financial Group LLC | 7,013 | $29.7K | 0.00% | +20+0.3% | Added |
| California State Teachers Retirement System | 9,337 | $39.5K | 0.00% | +1,709+22.4% | Added |
| 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 |
| Integrated Wealth Concepts LLC | 10,011 | $42.3K | 0.00% | +10,011 | New |
| Concurrent Investment Advisors, LLC | 10,085 | $42.7K | 0.00% | 00.0% | Unchanged |
| GTS Securities LLC | 10,329 | $43.7K | 0.00% | +10,329 | New |
| Marex Group plc | 10,833 | $45.8K | 0.00% | +10,833 | New |
| 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 |
| Calton & Associates, Inc. | 11,000 | $46.5K | 0.01% | 00.0% | Unchanged |
| Wealthfront Advisers LLC | 11,436 | $48.4K | 0.00% | +11,436 | New |
| Stifel Financial Corp | 11,536 | $48.8K | 0.00% | −1,500−11.5% | Reduced |
| Verition Fund Management LLC | 12,262 | $51.9K | 0.00% | +12,262 | New |
| Principal Financial Group Inc | 12,429 | $52.6K | 0.00% | +12,429 | New |
| Cambridge Investment Research Advisors, Inc. | 12,435 | $53.0K | 0.00% | 00.0% | Unchanged |
| Ewa, LLC | 12,796 | $54.1K | 0.01% | 00.0% | Unchanged |
| CWM, LLC | 13,275 | $56.2K | 0.00% | +1,493+12.7% | Added |
| Blair William & Co | 14,005 | $59.2K | 0.00% | −11,997−46.1% | Reduced |
| Ameritas Investment Partners, Inc. | 14,065 | $59.5K | 0.00% | +4,321+44.3% | Added |
| Two Sigma Securities, LLC | 14,437 | $61.1K | 0.01% | −42,668−74.7% | Reduced |
| ELCO Management Co., LLC | 14,609 | $61.8K | 0.03% | 00.0% | Unchanged |
| Xponance, Inc. | 14,817 | $62.7K | 0.00% | +14,817 | New |
| SG Americas Securities, LLC | 15,166 | $64.0K | 0.00% | −21,284−58.4% | Reduced |
| Legal & General Group Plc | 15,142 | $64.1K | 0.00% | +2,110+16.2% | Added |
| Sig Brokerage, LP | 15,429 | $65.3K | 0.02% | +15,429 | New |
| FMR LLC | 15,561 | $65.8K | 0.00% | +8,066+107.6% | Added |
| Victory Capital Management Inc | 16,048 | $67.9K | 0.00% | −303−1.9% | Reduced |
| Grange Capital, LLC | 17,651 | $74.7K | 0.07% | +1,650+10.3% | Added |
| Russell Investments Group, Ltd. | 18,006 | $76.2K | 0.00% | +8,446+88.3% | Added |
| Private Advisor Group, LLC | 19,540 | $82.7K | 0.00% | +1,335+7.3% | Added |
| Simon Quick Advisors, LLC | 20,000 | $84.6K | 0.00% | 00.0% | Unchanged |
| Stoneridge Investment Partners LLC | 20,287 | $86.0K | 0.06% | −41,040−66.9% | Reduced |
| Tower Research Capital LLC (TRC) | 21,110 | $89.3K | 0.00% | +14,636+226.1% | Added |
| Independent Financial Group, LLC | 23,250 | $98.3K | 0.00% | 00.0% | Unchanged |
| Financial Designs Corp | 23,327 | $98.7K | 0.05% | +23,327 | New |
| Jaffetilchin Investment Partners, LLC | 24,338 | $103.0K | 0.01% | 00.0% | Unchanged |
| Pensionmark Financial Group, LLC | 24,616 | $104.1K | 0.00% | −19,507−44.2% | Reduced |
| ProShare Advisors LLC | 24,915 | $105.4K | 0.00% | +2,277+10.1% | Added |
| SJS Investment Consulting Inc. | 25,000 | $105.8K | 0.01% | +25,000 | New |
| Citigroup Inc | 25,646 | $108.5K | 0.00% | −29,829−53.8% | Reduced |
| SEI Investments Co | 26,581 | $112.4K | 0.00% | 00.0% | Unchanged |
| Scissortail Wealth Management, LLC | 27,322 | $115.6K | 0.02% | 00.0% | Unchanged |
| Prudential Financial Inc | 28,690 | $121.4K | 0.00% | +28,690 | New |
| Millington Financial Advisors, LLC | 25,000 | $122.0K | 0.05% | 00.0% | Unchanged |
| Kestra Advisory Services, LLC | 29,150 | $123.3K | 0.00% | +1,750+6.4% | Added |
| Voya Investment Management LLC | 29,262 | $123.8K | 0.00% | +8,228+39.1% | Added |
| Genesee Capital Advisors, LLC | 30,000 | $126.9K | 0.05% | 00.0% | Unchanged |
| E Fund Management Co., Ltd. | 31,354 | $132.6K | 0.00% | +31,354 | New |
| Barclays PLC | 32,412 | $137.1K | 0.00% | −478,622−93.7% | Reduced |
| Scientech Research LLC | 34,096 | $144.2K | 0.12% | −4,647−12.0% | Reduced |
| Magnetar Financial LLC | 35,032 | $148.2K | 0.00% | +35,032 | New |
| Axxcess Wealth Management, LLC | 35,370 | $149.6K | 0.00% | 00.0% | Unchanged |
| Oxford Asset Management LLP | 35,501 | $150.2K | 0.06% | +35,501 | New |
| Visionary Horizons, LLC | 36,000 | $152.3K | 0.08% | 00.0% | Unchanged |
| Accurate Wealth Management, LLC | 32,611 | $158.7K | 0.02% | +32,611 | New |
| Commonwealth Equity Services, LLC | 38,470 | $162.7K | 0.00% | +9,226+31.5% | Added |
| New York State Common Retirement Fund | 39,000 | $165.0K | 0.00% | +32,100+465.2% | Added |
| Farallon Capital Management, L.L.C. | 40,000 | $169.2K | 0.00% | +40,000 | New |
| Creative Planning | 40,571 | $171.6K | 0.00% | +40,571 | New |
| Instrumental Wealth, LLC | 44,914 | $190.0K | 0.12% | 00.0% | Unchanged |