$VSTM

$10.10 +$0.10 (1.0%) Close

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

Ownership

13F as of Q2 2026 · 90.6M shares outstanding

Who owns VSTM?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 57.2%

BlackRock, Inc. 10.2% · Armistice Capital, LLC 7.8%

Institutional ownership

100.0%

+10.1 pts vs last qtr

Institutional holders

155

0 vs last qtr

Net shares bought

+13.5M

by institutions in Q2 2026

New / sold out

33 / 33

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +3.0M
Vanguard Portfolio Management LLC +2.5M

Biggest sellers in Q2 2026

Citadel Advisors LLC −2.0M
Morgan Stanley −1.5M

Who is planning to sell?

Notices of proposed sale, last 12 months

$1.18M

10 notices from 5 people

Shares covered

180.5K

0.20% of the company

Arranged in advance

69%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Dan Paterson Officer, director 10b5-1 $550K
Gagnon Robert E. Director $366K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2021–FY2025

+376.8%

+47.77% a year

Each share's claim on the business

−79.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $36.4M

over 5 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+ years0% 3–5 years32% 1–3 years42% Under 1 year26%

Quarterly turnover

22.4%

of institutional shares changed hands

Top 10 managers, median time held

2 years

Super Investors

Investment managers reporting VSTM on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	9.2M	10.15%	+3.0M (+48.4%)	2023	0.0%
Shares held by quarter Peak holding9.2M (Q2'26) Change over 8 quarters+7.0M Share of the company10.150% BlackRock, Inc.'s full portfolio →
AC Armistice Capital, LLC	7.0M	7.76%	+2.4M (+53.0%)	2025	0.3%
Shares held by quarter Peak holding7.0M (Q2'26) Change over 8 quarters+5.7M Share of the company7.760% Armistice Capital, LLC's full portfolio →

BlackRock, Inc.

9.2M

% of company

10.15%

Change vs last qtr

+3.0M (+48.4%)

Held since

2023

Armistice Capital, LLC

7.0M

% of company

7.76%

Change vs last qtr

+2.4M (+53.0%)

Held since

2025

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting VSTM on Form N-PORT; together they hold 23.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
SS State Street(R) SPDR(R) S&P(R) Biotech ETF SPDR Series Trust	$12.9M	3.4M	3.74%	0.12%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$10.7M	2.8M	3.10%	0.00%	June 30, 2026

State Street(R) SPDR(R) S&P(R) Biotech ETF

SPDR Series Trust

Position value

$12.9M

% of company

3.74%

% of the fund

0.12%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$10.7M

% of company

3.10%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Verastem 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
PD Paterson Dan Insider	683.7K	0.75%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.750% Paterson Dan's insider activity →
SB Stuglik Brian M Insider	137.1K	0.15%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.150% Stuglik Brian M's insider activity →

Paterson Dan

Insider

683.7K

% of company

0.75%

Change vs last qtr

—

Held since

—

Stuglik Brian M

Insider

137.1K

% of company

0.15%

Change vs last qtr

—

Held since

—

11 more holders behind a free account

See every insider and 5%+ holder of Verastem Inc.

Comments