SELLAS Life Sciences Group (SLS) Institutional Ownership

$11.55 -1.94 (-14.38%)

Closing price 09/11/2026 04:00 PM Eastern

Extended Trading

$11.54 -0.02 (-0.13%)

As of 09/11/2026 07:59 PM Eastern

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Current Institutional Ownership Percentage: 17.38%
Number of Institutional Buyers (last 12 months): 65
Total Institutional Inflows (last 12 months): $95.60M

Number of Institutional Sellers (last 12 months): 16
Total Institutional Outflows (last 12 months): $9.69M

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SLS Institutional Buying and Selling by Quarter

SELLAS Life Sciences Group Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
9/9/2026	Tidal Investments LLC	128,761	$1.90M	0.0%	+43.1%	0.064%
9/9/2026	Engineers Gate Manager LP	14,995	$221K	0.0%	-81.9%	0.007%
9/9/2026	Squarepoint Ops LLC	10,512	$155K	0.0%	-85.9%	0.005%
9/8/2026	Arizona State Retirement System	49,552	$731K	0.0%	N/A	0.025%
9/8/2026	Nykredit A S	1,839	$27K	0.0%	N/A	0.001%
8/25/2026	VIRGINIA RETIREMENT SYSTEMS ET Al	17,400	$257K	0.0%	N/A	0.009%
8/24/2026	California State Teachers Retirement System	2,987,040	$44.09M	0.0%	+31,891.4%	1.479%
8/21/2026	Nykredit A S	1,839	$27K	0.0%	N/A	0.001%
8/19/2026	Wellington Management Group LLP	597,309	$8.82M	0.0%	+73.2%	0.296%
8/6/2026	Bank of New York Mellon Corp	530,025	$7.82M	0.0%	N/A	0.270%
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7/10/2026	Dagco Inc.	1,232,433	$18.19M	3.4%	+19.8%	0.627%
7/9/2026	Everhart Financial Group Inc.	288,018	$4.25M	0.3%	-21.0%	0.146%
5/19/2026	Bank of America Corp DE	641,683	$2.71M	0.0%	+535.7%	0.345%
5/18/2026	California State Teachers Retirement System	9,337	$39K	0.0%	+22.4%	0.005%
5/16/2026	The Manufacturers Life Insurance Company	45,691	$193K	0.0%	+20.2%	0.025%
5/16/2026	Quantinno Capital Management LP	74,378	$315K	0.0%	N/A	0.040%
5/6/2026	Independent Financial Group LLC	23,250	$98K	0.0%	N/A	0.013%
5/5/2026	Wealthfront Advisers LLC	11,436	$48K	0.0%	N/A	0.006%
5/5/2026	Bank of New York Mellon Corp	478,366	$2.02M	0.0%	+86.6%	0.259%
5/4/2026	Principal Financial Group Inc.	12,429	$53K	0.0%	N/A	0.007%
5/1/2026	Fifth Third Bancorp	59,807	$253K	0.0%	N/A	0.032%
4/27/2026	World Investment Advisors	24,616	$104K	0.0%	-44.2%	0.013%
4/23/2026	SJS Investment Consulting Inc.	25,000	$106K	0.0%	N/A	0.014%
4/21/2026	Dagco Inc.	1,028,780	$4.35M	0.9%	+78.1%	0.573%
4/16/2026	SG Americas Securities LLC	15,166	$64K	0.0%	-58.4%	0.008%
4/16/2026	Financial Designs Corp	23,327	$99K	0.1%	N/A	0.013%
3/13/2026	World Investment Advisors	44,123	$166K	0.0%	N/A	0.031%
3/3/2026	Caitong International Asset Management Co. Ltd	55,129	$208K	0.1%	+408.9%	0.039%
2/19/2026	Invesco Ltd.	53,293	$201K	0.0%	+6.2%	0.037%
2/19/2026	Axxcess Wealth Management LLC	35,370	$133K	0.0%	+121.1%	0.025%
2/18/2026	Beacon Pointe Advisors LLC	10,000	$38K	0.0%	N/A	0.007%
2/18/2026	XTX Topco Ltd	118,440	$447K	0.0%	N/A	0.083%
2/18/2026	Millennium Management LLC	1,387,849	$5.23M	0.0%	+341.0%	0.974%
2/18/2026	Boothbay Fund Management LLC	13,800	$52K	0.0%	N/A	0.010%
2/17/2026	Equitable Holdings Inc.	32,060	$121K	0.0%	+18.5%	0.023%
2/17/2026	Price T Rowe Associates Inc. MD	63,026	$238K	0.0%	+31.4%	0.044%
2/17/2026	Regal Investment Advisors LLC	35,900	$135K	0.0%	N/A	0.025%
2/17/2026	Blair William & Co. IL	26,002	$98K	0.0%	+62.5%	0.018%
2/16/2026	Squarepoint Ops LLC	13,285	$50K	0.0%	-71.2%	0.009%
2/16/2026	Mariner LLC	159,150	$600K	0.0%	+46.3%	0.112%
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2/13/2026	Marshall Wace LLP	1,340,668	$5.05M	0.0%	-43.1%	0.941%
2/13/2026	The Manufacturers Life Insurance Company	38,018	$143K	0.0%	+13.6%	0.027%
2/13/2026	Stifel Financial Corp	13,036	$49K	0.0%	N/A	0.009%
2/13/2026	Charles Schwab Investment Management Inc.	408,401	$1.54M	0.0%	+38.9%	0.287%
2/13/2026	Police & Firemen s Retirement System of New Jersey	34,743	$131K	0.0%	+48.8%	0.024%
2/13/2026	State Street Corp	2,188,171	$8.25M	0.0%	+60.8%	1.536%
2/13/2026	Caitong International Asset Management Co. Ltd	19,777	$75K	0.2%	+82.6%	0.014%
2/13/2026	Wells Fargo & Company MN	299,305	$1.13M	0.0%	+294.5%	0.210%
2/12/2026	MetLife Investment Management LLC	27,181	$102K	0.0%	-32.0%	0.019%
2/12/2026	Commonwealth Equity Services LLC	29,244	$110K	0.0%	+84.5%	0.021%
2/12/2026	New York State Common Retirement Fund	6,900	$26K	0.0%	-86.0%	0.005%
2/12/2026	Nuveen LLC	1,023,961	$3.86M	0.0%	+2.6%	0.719%
2/11/2026	Deutsche Bank AG	91,688	$346K	0.0%	-24.2%	0.064%
2/10/2026	Goldman Sachs Group Inc.	411,654	$1.55M	0.0%	+2,036.8%	0.289%
2/10/2026	Intech Investment Management LLC	40,272	$152K	0.0%	-13.1%	0.028%
2/9/2026	Geode Capital Management LLC	3,077,337	$11.60M	0.0%	+35.9%	2.160%
2/9/2026	Millington Financial Advisors LLC	25,000	$93K	0.0%	N/A	0.018%
2/6/2026	Axxcess Wealth Management LLC	35,370	$133K	0.0%	+121.1%	0.025%
2/6/2026	GSA Capital Partners LLP	345,052	$1.30M	0.1%	-33.5%	0.242%
2/6/2026	Larson Financial Group LLC	6,993	$26K	0.0%	N/A	0.005%
2/6/2026	ProShare Advisors LLC	22,638	$85K	0.0%	+31.5%	0.016%
2/4/2026	World Investment Advisors	44,123	$166K	0.0%	N/A	0.031%
2/4/2026	Money Concepts Capital Corp	10,600	$40K	0.0%	N/A	0.007%
2/3/2026	EWA LLC	12,796	$48K	0.0%	N/A	0.009%
2/3/2026	Grange Capital LLC	16,001	$60K	0.1%	+18.5%	0.011%
1/30/2026	Opus Capital Group LLC	317,100	$1.20M	0.1%	+26.8%	0.223%
1/29/2026	Concurrent Investment Advisors LLC	10,085	$38K	0.0%	N/A	0.007%
1/27/2026	NORTHSTAR ASSET MANAGEMENT Co	50,000	$188K	0.0%	+24.0%	0.035%
1/26/2026	CWM LLC	11,782	$44K	0.0%	+124.7%	0.008%
1/23/2026	Visionary Horizons LLC	36,000	$136K	0.1%	N/A	0.025%
1/15/2026	Jaffetilchin Investment Partners LLC	24,338	$92K	0.0%	N/A	0.017%
1/9/2026	SG Americas Securities LLC	36,450	$137K	0.0%	+88.2%	0.026%
1/8/2026	Dagco Inc.	577,540	$2.18M	0.5%	N/A	0.405%
1/7/2026	Everhart Financial Group Inc.	466,216	$1.76M	0.2%	+40.8%	0.327%
1/1/2026	JPMorgan Chase & Co.	40,722	$66K	0.0%	-34.2%	0.029%
11/17/2025	Millennium Management LLC	314,702	$507K	0.0%	-72.1%	0.252%
11/17/2025	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	44,647	$72K	0.0%	-14.5%	0.036%
11/17/2025	Bank of America Corp DE	42,150	$68K	0.0%	+21.9%	0.034%
11/17/2025	Anson Funds Management LP	6,032,938	$9.71M	0.8%	+2,093.8%	4.823%
11/14/2025	Equitable Holdings Inc.	27,060	$44K	0.0%	+58.6%	0.022%
11/14/2025	Two Sigma Investments LP	145,856	$235K	0.0%	-26.2%	0.117%
11/14/2025	Squarepoint Ops LLC	46,180	$74K	0.0%	+186.4%	0.037%
11/13/2025	Sei Investments Co.	26,581	$43K	0.0%	N/A	0.021%
11/13/2025	BNP Paribas Financial Markets	19,724	$32K	0.0%	+89.2%	0.016%
11/12/2025	Trustmark Bank Trust Department	36,511	$59K	0.0%	N/A	0.029%
11/7/2025	Axxcess Wealth Management LLC	16,000	$26K	0.0%	N/A	0.013%
11/7/2025	GSA Capital Partners LLP	518,995	$836K	0.1%	+21.7%	0.415%
11/7/2025	Vanguard Group Inc.	6,839,905	$11.01M	0.0%	+2.8%	5.468%
11/7/2025	JPMorgan Chase & Co.	40,722	$66K	0.0%	-34.2%	0.033%
11/4/2025	Tyche Wealth Partners LLC	37,500	$60K	0.0%	N/A	0.030%
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11/4/2025	Everhart Financial Group Inc.	331,150	$533K	0.1%	N/A	0.265%
11/3/2025	Genesee Capital Advisors LLC	30,000	$48K	0.0%	N/A	0.024%
10/31/2025	Instrumental Wealth LLC	44,914	$72K	0.1%	N/A	0.036%
10/31/2025	Stoneridge Investment Partners LLC	53,709	$86K	0.1%	N/A	0.043%
10/31/2025	Opus Capital Group LLC	250,000	$403K	0.0%	+4.2%	0.200%
10/29/2025	Scissortail Wealth Management LLC	27,322	$44K	0.0%	N/A	0.022%
10/22/2025	NORTHSTAR ASSET MANAGEMENT Co	40,320	$65K	0.0%	N/A	0.032%
10/9/2025	Voya Investment Management LLC	17,444	$28K	0.0%	-36.6%	0.017%
8/15/2025	Great Valley Advisor Group Inc.	20,000	$44K	0.0%	N/A	0.019%
8/15/2025	Bank of America Corp DE	34,579	$76K	0.0%	+5,459.3%	0.033%

SLS Institutional Ownership - Frequently Asked Questions

During the previous two years, 81 institutional investors and hedge funds held shares of SELLAS Life Sciences Group. The most heavily invested institutionals were California State Teachers Retirement System ($44.09M), Dagco Inc. ($18.19M), Geode Capital Management LLC ($11.60M), Vanguard Group Inc. ($11.01M), Anson Funds Management LP ($9.71M), Wellington Management Group LLP ($8.82M), and State Street Corp ($8.25M).Learn more on SELLAS Life Sciences Group's institutional investors.

17.38% of SELLAS Life Sciences Group's stock is owned by institutional investors. Learn more on SLS's institutional investor holdings.

Of the 76 institutional investors that purchased SELLAS Life Sciences Group's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Anson Funds Management LP ($13.34M), California State Teachers Retirement System ($2.98M), Marshall Wace LLP ($2.70M), Geode Capital Management LLC ($2.41M), Dagco Inc. ($1.23M), Brooklyn FI LLC ($1.19M), and Millennium Management LLC ($1.07M).

Institutional investors have bought a total of 17,173,180 shares in the last 24 months. This purchase volume represents approximately $95.60M in transactions.

Of the 16 institutional investors that sold SELLAS Life Sciences Group's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Marshall Wace LLP ($1.02M), Millennium Management LLC ($812.52K), GSA Capital Partners LLP ($173.94K), Squarepoint Ops LLC ($97.13K), Everhart Financial Group Inc. ($76.38K), Engineers Gate Manager LP ($67.79K), and Two Sigma Investments LP ($51.79K).

Institutional investors have sold a total of 2,488,244 shares in the last 24 months. This volume of shares sold represents approximately $9.69M in transactions.

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Institutional ownership data for NASDAQ:SLS is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.

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SELLAS Life Sciences Group (SLS) Institutional Ownership

SLS Institutional Buying and Selling by Quarter

SELLAS Life Sciences Group Major Shareholders & Ownership History

SLS Institutional Ownership - Frequently Asked Questions

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SELLAS Life Sciences Group (SLS) Institutional Ownership

Institutional Ownership Changes (13F Filings) for SELLAS Life Sciences Group (NASDAQ:SLS)

SLS Institutional Buying and Selling by Quarter

SELLAS Life Sciences Group Major Shareholders & Ownership History

SLS Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of SLS shares?

What percentage of SELLAS Life Sciences Group's stock is owned by institutional investors?

Which institutional investors have been buying SELLAS Life Sciences Group's stock?

How much institutional buying is happening at SELLAS Life Sciences Group?

Which of SELLAS Life Sciences Group's major shareholders have been selling company stock?

How much institutional selling is happening at SELLAS Life Sciences Group?

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