GLSI · Greenwich LifeSciences, Inc. · Shareholders & Ownership

$15.41 -1.16 (-7.00%)

Russell 2000 member Rebalance outlook locked

Market Cap

$243.22M

14.68M

Volume · Oct 22 70.83K Avg daily vol (3M) 127.76K

Every disclosed holder of GLSI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns GLSI

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	58	1,686,542	11.49%	Yes
Insiders (Forms 3, 4, 5)	2	5,875,550	40.03%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	7,116,116	48.48%	Rest
Registered funds (N-PORT, not summed)	77	880,597	6.00%	No

Shares outstanding: 14,678,208, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of GLSI

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Patel Snehal Insider CIK 1806920 · Jul 29, 2026 Director, CEO and CFO, 10% Owner, issuer-wide	5,611,402	38.23%	+2,200	Jul 29, 2026	Director, CEO and CFO, 10% Owner, issuer-wide
2	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	485,854	3.31%	+51,994	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	180,681	1.23%	+21,358	Jun 30, 2026	iShares Trust, not summed
2.2	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	63,269	0.43%	+11,414	Jun 30, 2026	iShares Trust, not summed
2.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	22,686	0.15%	+6,433	Jun 30, 2026	iShares Trust, not summed
2.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	11,706	0.08%	0	Jun 30, 2026	Quantitative Master Series LLC, not summed
2.5	iShares Russell Small/Mid-Cap Index Fund Fund S000050373 · Registered fund · Jul 31, 2026 BlackRock Funds, not summed	1,301	0.01%	0	Jul 31, 2026	BlackRock Funds, not summed
3	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	278,190	1.90%	-20,076	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Thompson Jaye Insider CIK 1476971 · Nov 21, 2024 VP Clinical Reg Affairs, issuer-wide	264,148	1.80%	+1,000	Nov 21, 2024	VP Clinical Reg Affairs, issuer-wide
5	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	199,015	1.36%	-18,762	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
6	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	168,179	1.15%	+12,713	Jun 30, 2026	carried, not yet filed for the newest quarter
7	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	143,086	0.97%	+9,211	Jun 30, 2026	carried, not yet filed for the newest quarter
7.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	2,600	0.02%	+200	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
7.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	151	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
8	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	80,861	0.55%	+21,950	Jun 30, 2026	carried, not yet filed for the newest quarter
9	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	80,228	0.55%	+5,103	Jun 30, 2026	carried, not yet filed for the newest quarter
9.1	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	4,500	0.03%	-213	Jun 30, 2026	Northern Funds, not summed
9.2	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	3,278	0.02%	0	Jun 30, 2026	Northern Funds, not summed
10	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	72,268	0.49%	-257	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
11	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	47,900	0.33%	+1,377	Jun 30, 2026	carried, not yet filed for the newest quarter
12	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	45,965	0.31%	+1,057	Jun 30, 2026	carried, not yet filed for the newest quarter
13	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	43,447	0.30%	+13,620	Jun 30, 2026	carried, not yet filed for the newest quarter
14	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	39,329	0.27%	-192	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	5,024	0.03%	-10,208	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
14.2	Goldman Sachs Small Cap Growth Insights Fund Fund S000014930 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	3,411	0.02%	0	Jul 31, 2026	Goldman Sachs Trust, not summed
14.3	Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund Fund S000009355 · Registered fund · Jun 30, 2026 Goldman Sachs Variable Insurance Trust, not summed	1,683	0.01%	—	Jun 30, 2026	Goldman Sachs Variable Insurance Trust, not summed
15	Russell Investments Group, Ltd. 13F CIK 1692234 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	34,353	0.23%	-5,344	Jun 30, 2026	carried, not yet filed for the newest quarter
16	VANGUARD U.S. MOMENTUM FACTOR ETF Fund S000061302 · Registered fund · May 31, 2026 VANGUARD WELLINGTON FUND, not summed	34,273	0.23%	+23,533	May 31, 2026	VANGUARD WELLINGTON FUND, not summed
17	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	32,771	0.22%	+1,945	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
18	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	27,694	0.19%	+27,694	Jun 30, 2026	carried, not yet filed for the newest quarter
19	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	23,409	0.16%	+2,293	Jun 30, 2026	carried, not yet filed for the newest quarter
20	STATE OF WISCONSIN INVESTMENT BOARD 13F CIK 854157 · Pension or benefit plan · Jun 30, 2026 carried, not yet filed for the newest quarter	22,639	0.15%	+2,300	Jun 30, 2026	carried, not yet filed for the newest quarter
21	GSA CAPITAL PARTNERS LLP 13F CIK 1362033 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	19,543	0.13%	+19,543	Jun 30, 2026	carried, not yet filed for the newest quarter
22	MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 13F CIK 912938 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	17,922	0.12%	+17,922	Jun 30, 2026	carried, not yet filed for the newest quarter
22.1	MFS Blended Research Small Cap Equity Fund Fund S000050659 · Registered fund · May 31, 2026 MFS SERIES TRUST X, not summed	6,758	0.05%	—	May 31, 2026	MFS SERIES TRUST X, not summed
22.2	MFS Blended Research Small Cap Equity Portfolio Fund S000008071 · Registered fund · Jun 30, 2026 MFS VARIABLE INSURANCE TRUST III, not summed	3,032	0.02%	—	Jun 30, 2026	MFS VARIABLE INSURANCE TRUST III, not summed
23	STRS OHIO 13F CIK 820478 · Pension or benefit plan · Jun 30, 2026 carried, not yet filed for the newest quarter	17,800	0.12%	+4,100	Jun 30, 2026	carried, not yet filed for the newest quarter
24	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	17,098	0.12%	+495	Jun 30, 2026	carried, not yet filed for the newest quarter
24.1	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	16,211	0.11%	+2,357	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
24.2	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	2,671	0.02%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
25	Vanguard Global Advisers, LLC 13F CIK 1811242 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	11,871	0.08%	+1,536	Jun 30, 2026	carried, not yet filed for the newest quarter
26	Ancora Advisors LLC 13F CIK 1446114 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	10,740	0.07%	-26,760	Jun 30, 2026	carried, not yet filed for the newest quarter
27	STIFEL FINANCIAL CORP 13F CIK 720672 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	10,023	0.07%	+10,023	Jun 30, 2026	carried, not yet filed for the newest quarter
28	RAYMOND JAMES FINANCIAL INC 13F CIK 720005 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	9,137	0.06%	-700	Jun 30, 2026	carried, not yet filed for the newest quarter
29	RHUMBLINE ADVISERS 13F CIK 1115418 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,387	0.06%	+341	Jun 30, 2026	carried, not yet filed for the newest quarter
30	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	8,122	0.06%	0	Jul 31, 2026	TIAA-CREF Funds, not summed
31	EQ/2000 Managed Volatility Portfolio Fund S000025800 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	6,644	0.05%	0	Jun 30, 2026	EQ Advisors Trust, not summed
32	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	6,144	0.04%	+3,704	Jun 30, 2026	carried, not yet filed for the newest quarter
33	VANGUARD RUSSELL 2000 GROWTH INDEX FUND Fund S000030005 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	6,010	0.04%	+180	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
34	DEUTSCHE BANK AG\ 13F CIK 948046 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	5,351	0.04%	+189	Jun 30, 2026	carried, not yet filed for the newest quarter
34.1	DWS Small Cap Index VIP Fund S000006223 · Registered fund · Jun 30, 2026 DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed	903	0.01%	-56	Jun 30, 2026	DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed
35	LVIP State Street Small-Cap Index Fund Fund S000015974 · Registered fund · Jun 30, 2026 LINCOLN VARIABLE INSURANCE PRODUCTS TRUST, not summed	4,700	0.03%	0	Jun 30, 2026	LINCOLN VARIABLE INSURANCE PRODUCTS TRUST, not summed
36	Franklin Small Cap Enhanced ETF Fund S000097279 · Registered fund · Jun 30, 2026 Franklin Templeton ETF Trust, not summed	4,350	0.03%	-535	Jun 30, 2026	Franklin Templeton ETF Trust, not summed
37	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,996	0.03%	-111	Jun 30, 2026	carried, not yet filed for the newest quarter
37.1	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	74,349	0.51%	+10,935	Jul 31, 2026	Fidelity Salem Street Trust, not summed
37.2	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	33,114	0.23%	-1,067	May 31, 2026	Fidelity Concord Street Trust, not summed
37.3	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	12,325	0.08%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
37.4	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	9,629	0.07%	+480	May 31, 2026	Fidelity Concord Street Trust, not summed
37.5	Fidelity Nasdaq Composite Index Fund Fund S000055366 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	8,430	0.06%	-4,333	May 31, 2026	Fidelity Concord Street Trust, not summed
38	VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND Fund S000002855 · Registered fund · Jun 30, 2026 VANGUARD INSTITUTIONAL INDEX FUNDS, not summed	3,527	0.02%	0	Jun 30, 2026	VANGUARD INSTITUTIONAL INDEX FUNDS, not summed
39	JONES FINANCIAL COMPANIES LLLP 13F CIK 815917 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,400	0.02%	+200	Jun 30, 2026	carried, not yet filed for the newest quarter
40	VANGUARD BALANCED INDEX FUND Fund S000002560 · Registered fund · Jun 30, 2026 VANGUARD VALLEY FORGE FUNDS, not summed	3,380	0.02%	-1,057	Jun 30, 2026	VANGUARD VALLEY FORGE FUNDS, not summed
41	CITIGROUP INC 13F CIK 831001 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	3,192	0.02%	+2,852	Jun 30, 2026	carried, not yet filed for the newest quarter
42	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 13F CIK 1705339 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,102	0.02%	-30	Jun 30, 2026	carried, not yet filed for the newest quarter
42.1	Global X Russell 2000 ETF Fund S000085029 · Registered fund · Jul 31, 2026 GLOBAL X FUNDS, not summed	3,196	0.02%	+429	Jul 31, 2026	GLOBAL X FUNDS, not summed
43	ATM Small Cap Managed Volatility Portfolio Fund S000025801 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	2,956	0.02%	+1,080	Jun 30, 2026	EQ Advisors Trust, not summed
44	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	2,906	0.02%	+302	Jun 30, 2026	carried, not yet filed for the newest quarter
45	Police & Firemen's Retirement System of New Jersey 13F CIK 2040686 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2,768	0.02%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Small Cap Index Fund Fund S000008007 · Registered fund · May 31, 2026 VALIC Co I, not summed	2,343	0.02%	0	May 31, 2026	VALIC Co I, not summed
47	EQ/AB Small Cap Growth Portfolio Fund S000009056 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	2,200	0.02%	+1,460	Jun 30, 2026	EQ Advisors Trust, not summed
48	EQ/Small Company Index Portfolio Fund S000009197 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	2,200	0.02%	+1,460	Jun 30, 2026	EQ Advisors Trust, not summed
49	NFSG Corp 13F CIK 1879757 · Registered investment adviser · Sep 30, 2026	2,100	0.01%	0	Sep 30, 2026
50	Tower Research Capital LLC (TRC) 13F CIK 1533421 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,791	0.01%	+371	Jun 30, 2026	carried, not yet filed for the newest quarter

2 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 112 holders

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Key facts CIK 1799788 CUSIP 396879108 13F (30d) 4 filings 4 filers Visit website Investor relations