Verastem Ownership & Insider Activity

Verastem (VSTM) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 3.5% of shares outstanding. Institutional investors hold 33.8%. Over the past 90 days, insiders made 4 sales worth $381K.

Shares Outstanding

90.563M

Shares Float

90.037M

Insider Shares Owned

3.142M

Insider % Owned

3.5%

Institutional Shares Held

30.649M

Institutional % Held

33.8%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$381K total

Net Activity

Net Selling

Net Value (90d)

-$381K

Verastem Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Sep 30, 2026	Daniel Calkins Attorney in Fact	PRESIDENT AND CEO	SELL	151.014K	$8.00	$353K
Sep 30, 2026	Daniel Calkins	CHIEF FINANCIAL OFFICER	SELL	10.899K	$8.00	$21K
Sep 21, 2026	Daniel Calkins	CHIEF FINANCIAL OFFICER	SELL	55.000	$7.70	$424
Aug 3, 2026	Daniel Calkins Attorney in Fact	PRESIDENT AND CEO	SELL	1.302K	$5.81	$8K
Jun 22, 2026	Daniel Calkins Attorney in Fact	PRESIDENT AND CEO	SELL	20.871K	$4.18	$87K
Jun 22, 2026	Daniel Calkins	CHIEF FINANCIAL OFFICER	SELL	4.089K	$4.18	$17K
May 4, 2026	Daniel Calkins Attorney in Fact	PRESIDENT AND CEO	SELL	806.000	$5.82	$5K