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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 12,198,410 | $51.6M | 0.00% | +4,657,356+61.8% | Added |
| State Street Corp | 8,396,356 | $35.5M | 0.00% | +6,208,185+283.7% | Added |
| Vanguard Capital Management LLC | 7,525,929 | $31.8M | 0.00% | +7,525,929 | New |
| Geode Capital Management, LLC | 3,912,606 | $16.6M | 0.00% | +835,269+27.1% | Added |
| Marshall Wace, LLP | 2,037,162 | $8.62M | 0.01% | +696,494+52.0% | Added |
| Jones Financial Companies LLLP | 1,675,077 | $7.31M | 0.00% | +1,245,834+290.2% | Added |
| Vanguard Portfolio Management LLC | 1,462,806 | $6.19M | 0.00% | +1,462,806 | New |
| Morgan Stanley | 1,336,293 | $5.65M | 0.00% | +445,364+50.0% | Added |
| Northern Trust Corp | 1,275,984 | $5.40M | 0.00% | +345,234+37.1% | Added |
| Vanguard Fiduciary Trust Co | 1,202,839 | $5.09M | 0.00% | +1,202,839 | New |
| DAGCO, Inc. | 1,028,780 | $4.35M | 0.94% | +451,240+78.1% | Added |
| UBS Group AG | 745,419 | $3.15M | 0.00% | +696,692+1,429.8% | Added |
| Invesco Ltd. | 698,080 | $2.95M | 0.00% | +644,787+1,209.9% | Added |
| Nuveen, LLC | 670,974 | $2.84M | 0.00% | −352,987−34.5% | Reduced |
| Bank of America Corp | 641,683 | $2.71M | 0.00% | +540,748+535.7% | Added |
| Goldman Sachs Group Inc | 555,913 | $2.35M | 0.00% | +144,259+35.0% | Added |
| Charles Schwab Investment Management Inc | 480,604 | $2.03M | 0.00% | +72,203+17.7% | Added |
| Bank of New York Mellon Corp | 478,366 | $2.02M | 0.00% | +221,957+86.6% | Added |
| Two Sigma Investments, LP | 403,165 | $1.71M | 0.00% | −679,042−62.7% | Reduced |
| Susquehanna International Group, LLP | 397,056 | $1.68M | 0.00% | +47,301+13.5% | Added |
| Everhart Financial Group, Inc. | 364,397 | $1.54M | 0.13% | −101,819−21.8% | Reduced |
| Opus Capital Group, LLC | 346,452 | $1.47M | 0.16% | +29,352+9.3% | Added |
| Wellington Management Group LLP | 344,778 | $1.46M | 0.00% | +344,778 | New |
| Vision Financial Markets LLC | 304,400 | $1.29M | 1.26% | +304,400 | New |
| Simplex Trading, LLC | 295,162 | $1.25M | 0.04% | +295,162 | New |
| Rafferty Asset Management, LLC | 249,428 | $1.06M | 0.00% | +249,428 | New |
| Wells Fargo & Company | 225,707 | $954.7K | 0.00% | −73,598−24.6% | Reduced |
| Virtu Financial LLC | 221,829 | $938.0K | 0.04% | +221,829 | New |
| Rhumbline Advisers | 194,198 | $821.5K | 0.00% | +64,889+50.2% | Added |
| Vontobel Holding Ltd. | 174,153 | $736.7K | 0.00% | +174,153 | New |
| Mariner, LLC | 173,570 | $734.2K | 0.00% | +14,420+9.1% | Added |
| Gsa Capital Partners LLP | 163,290 | $691.0K | 0.04% | −181,762−52.7% | Reduced |
| Millennium Management LLC | 159,524 | $674.8K | 0.00% | −1,228,325−88.5% | Reduced |
| Alliancebernstein L.P. | 163,940 | $618.1K | 0.00% | +113,980+228.1% | Added |
| Deutsche Bank AG | 137,646 | $582.2K | 0.00% | +45,958+50.1% | Added |
| LPL Financial LLC | 137,208 | $580.4K | 0.00% | +40,903+42.5% | Added |
| Vanguard Global Advisers, LLC | 128,110 | $541.9K | 0.00% | +128,110 | New |
| Price T Rowe Associates Inc | 122,120 | $517.0K | 0.00% | +59,094+93.8% | Added |
| Profund Advisors LLC | 111,794 | $472.9K | 0.02% | +111,794 | New |
| Fulcrum Wealth Advisors, LLC | 109,251 | $462.1K | 0.38% | +60,587+124.5% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 98,289 | $411.8K | 0.00% | +40,742+70.8% | Added |
| MetLife Investment Management | 94,255 | $398.7K | 0.00% | +67,074+246.8% | Added |
| Toroso Investments, LLC | 90,007 | $380.7K | 0.00% | +90,007 | New |
| Tema ETFs LLC | 90,007 | $380.7K | 0.03% | +90,007 | New |
| Engineers Gate Manager LP | 82,780 | $350.2K | 0.00% | +82,780 | New |
| Balyasny Asset Management LLC | 81,695 | $345.6K | 0.00% | +81,695 | New |
| JPMorgan Chase & Co | 81,824 | $327.7K | 0.00% | +32,345+65.4% | Added |
| Squarepoint Ops LLC | 74,751 | $316.2K | 0.00% | +61,466+462.7% | Added |
| Quantinno Capital Management LP | 74,378 | $314.6K | 0.00% | +74,378 | New |
| Citadel Advisors LLC | 64,641 | $273.4K | 0.00% | +64,641 | New |
| Caitong International Asset Management Co., Ltd | 60,712 | $256.8K | 0.05% | +5,583+10.1% | Added |
| Fifth Third Bancorp | 59,807 | $253.0K | 0.00% | +59,807 | New |
| AQR Capital Management LLC | 53,990 | $228.4K | 0.00% | +53,990 | New |
| Intech Investment Management LLC | 51,255 | $216.8K | 0.00% | +10,983+27.3% | Added |
| Northstar Asset Management LLC | 50,000 | $211.5K | 0.05% | 00.0% | Unchanged |
| EntryPoint Capital, LLC | 48,224 | $204.0K | 0.06% | +48,224 | New |
| Advisor Group Holdings, Inc. | 47,272 | $199.9K | 0.00% | +23,583+99.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 47,089 | $199.2K | 0.00% | +12,346+35.5% | Added |
| BNP Paribas Arbitrage, SA | 47,016 | $198.9K | 0.00% | +20,178+75.2% | Added |
| Manufacturers Life Insurance Company, The | 45,691 | $193.3K | 0.00% | +7,673+20.2% | Added |
| Instrumental Wealth, LLC | 44,914 | $190.0K | 0.12% | 00.0% | Unchanged |
| Creative Planning | 40,571 | $171.6K | 0.00% | +40,571 | New |
| Farallon Capital Management, L.L.C. | 40,000 | $169.2K | 0.00% | +40,000 | New |
| New York State Common Retirement Fund | 39,000 | $165.0K | 0.00% | +32,100+465.2% | Added |
| Commonwealth Equity Services, LLC | 38,470 | $162.7K | 0.00% | +9,226+31.5% | Added |
| Accurate Wealth Management, LLC | 32,611 | $158.7K | 0.02% | +32,611 | New |
| Visionary Horizons, LLC | 36,000 | $152.3K | 0.08% | 00.0% | Unchanged |
| Oxford Asset Management LLP | 35,501 | $150.2K | 0.06% | +35,501 | New |
| Axxcess Wealth Management, LLC | 35,370 | $149.6K | 0.00% | 00.0% | Unchanged |
| Magnetar Financial LLC | 35,032 | $148.2K | 0.00% | +35,032 | New |
| Scientech Research LLC | 34,096 | $144.2K | 0.12% | −4,647−12.0% | Reduced |
| Barclays PLC | 32,412 | $137.1K | 0.00% | −478,622−93.7% | Reduced |
| E Fund Management Co., Ltd. | 31,354 | $132.6K | 0.00% | +31,354 | New |
| Genesee Capital Advisors, LLC | 30,000 | $126.9K | 0.05% | 00.0% | Unchanged |
| Voya Investment Management LLC | 29,262 | $123.8K | 0.00% | +8,228+39.1% | Added |
| Kestra Advisory Services, LLC | 29,150 | $123.3K | 0.00% | +1,750+6.4% | Added |
| Millington Financial Advisors, LLC | 25,000 | $122.0K | 0.05% | 00.0% | Unchanged |
| Prudential Financial Inc | 28,690 | $121.4K | 0.00% | +28,690 | New |
| Scissortail Wealth Management, LLC | 27,322 | $115.6K | 0.02% | 00.0% | Unchanged |
| SEI Investments Co | 26,581 | $112.4K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 25,646 | $108.5K | 0.00% | −29,829−53.8% | Reduced |
| SJS Investment Consulting Inc. | 25,000 | $105.8K | 0.01% | +25,000 | New |
| ProShare Advisors LLC | 24,915 | $105.4K | 0.00% | +2,277+10.1% | Added |
| Pensionmark Financial Group, LLC | 24,616 | $104.1K | 0.00% | −19,507−44.2% | Reduced |
| Jaffetilchin Investment Partners, LLC | 24,338 | $103.0K | 0.01% | 00.0% | Unchanged |
| Financial Designs Corp | 23,327 | $98.7K | 0.05% | +23,327 | New |
| Independent Financial Group, LLC | 23,250 | $98.3K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 21,110 | $89.3K | 0.00% | +14,636+226.1% | Added |
| Stoneridge Investment Partners LLC | 20,287 | $86.0K | 0.06% | −41,040−66.9% | Reduced |
| Simon Quick Advisors, LLC | 20,000 | $84.6K | 0.00% | 00.0% | Unchanged |
| Private Advisor Group, LLC | 19,540 | $82.7K | 0.00% | +1,335+7.3% | Added |
| Russell Investments Group, Ltd. | 18,006 | $76.2K | 0.00% | +8,446+88.3% | Added |
| Grange Capital, LLC | 17,651 | $74.7K | 0.07% | +1,650+10.3% | Added |
| Victory Capital Management Inc | 16,048 | $67.9K | 0.00% | −303−1.9% | Reduced |
| FMR LLC | 15,561 | $65.8K | 0.00% | +8,066+107.6% | Added |
| Sig Brokerage, LP | 15,429 | $65.3K | 0.02% | +15,429 | New |
| Legal & General Group Plc | 15,142 | $64.1K | 0.00% | +2,110+16.2% | Added |
| SG Americas Securities, LLC | 15,166 | $64.0K | 0.00% | −21,284−58.4% | Reduced |
| Xponance, Inc. | 14,817 | $62.7K | 0.00% | +14,817 | New |
| ELCO Management Co., LLC | 14,609 | $61.8K | 0.03% | 00.0% | Unchanged |