$GLSI

$17.13 +$1.09 (6.83%) Close

$GLSI Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 14.7M shares outstanding

Who owns GLSI?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 179.4%

Patel Snehal 83.9% · BlackRock, Inc. 27.3%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

292

+8 vs last qtr

Net shares bought

+747.4K

by institutions in Q2 2026

New / sold out

45 / 37

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +331.0K
American Century Companies Inc +252.4K

Biggest sellers in Q2 2026

Goldman Sachs Group Inc −144.9K
Jpmorgan Chase & Co −132.0K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Greenwich Lifesciences Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2022–FY2025

+4.8%

+1.58% a year

Each share's claim on the business

−4.6%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$7.54M vs $18.2M

over 4 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years77% 3–5 years4% 1–3 years15% Under 1 year4%

Quarterly turnover

7.1%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting GLSI on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	4.0M	27.25%	+331.0K (+9.0%)	≤2021	0.0%
Shares held by quarter Peak holding4.0M (Q2'26) Change over 8 quarters+402.5K Share of the company27.250% BlackRock, Inc.'s full portfolio →
DF Dimensional Fund Advisors LP	2.0M	13.66%	+26.6K (+1.3%)	≤2021	0.0%
Shares held by quarter Peak holding2.0M (Q2'26) Change over 8 quarters+67.5K Share of the company13.660% Dimensional Fund Advisors LP's full portfolio →

BlackRock, Inc.

4.0M

% of company

27.25%

Change vs last qtr

+331.0K (+9.0%)

Held since

≤2021

Dimensional Fund Advisors LP

2.0M

% of company

13.66%

Change vs last qtr

+26.6K (+1.3%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Greenwich Lifesciences Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting GLSI on Form N-PORT; together they hold 101.3% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$75.2M	1.1M	7.81%	0.00%	June 30, 2026
UM Undiscovered Managers Behavioral Value Fund Undiscovered Managers Funds	$73.6M	987.9K	6.73%	0.82%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$75.2M

% of company

7.81%

% of the fund

0.00%

As of

June 30, 2026

Undiscovered Managers Behavioral Value Fund

Undiscovered Managers Funds

Position value

$73.6M

% of company

6.73%

% of the fund

0.82%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Greenwich Lifesciences Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
PS Patel Snehal Insider	12.3M	83.89%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company83.890% Patel Snehal's insider activity →
TJ Thompson Jaye Insider	264.1K	1.80%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.800% Thompson Jaye's insider activity →

Patel Snehal

Insider

12.3M

% of company

83.89%

Change vs last qtr

—

Held since

—

Thompson Jaye

Insider

264.1K

% of company

1.80%

Change vs last qtr

—

Held since

—

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