Compass Therapeutics Ownership & Insider Activity

Compass Therapeutics (CMPX) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 7.0% of shares outstanding. Institutional investors hold 24.6%. Over the past 90 days, insiders made 2 purchases worth $21K.

Shares Outstanding

180.088M

Shares Float

150.649M

Insider Shares Owned

12.675M

Insider % Owned

7.0%

Institutional Shares Held

44.212M

Institutional % Held

24.6%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

$21K total

Sales (90d)

Net Activity

Net Buying

Net Value (90d)

$21K

Compass Therapeutics Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 1, 2026	Neil Lerner	CHIEF ACCOUNTING OFFICER	BUY	20.000K	$0.92	$18K
Sep 24, 2026	Neil Lerner	CHIEF ACCOUNTING OFFICER	BUY	2.500K	$1.14	$3K