MPM BioImpact LLC

13F Holdings History for Compass Therapeutics, Inc. - Common Stock, $0.0001 par value per share (CMPX)

Symbol: CMPX on Nasdaq
Investment type: Equity / Common Stock, $0.0001 par value per share
Latest Disclosed Ownership: 5.62M shares
Security Ownership: 4.1%

Shares, Excluding Options vs Price

Value, Excluding Options

MPM BioImpact LLC ownership in Compass Therapeutics, Inc. Common Stock, $0.0001 par value per share (CMPX)

2025-08-12 - MPM BioImpact LLC has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 5.62M shares of Compass Therapeutics, Inc. Common Stock, $0.0001 par value per share (CMPX). This represents 4.1% percent ownership of the company. In their previous filing dated 2025-02-14, MPM BioImpact LLC had reported owning 8.57M shares, indicating a decrease of -34.4% percent.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
MPM BioImpact LLC	4.1%	-35%	$14.6M	5.62M	-2,945,391	-34.4%	$2.60	13G/A	6/30/2025	12 Aug 2025 16:29:56
MPM BioImpact LLC	6.2%		$14.6M	8.57M			$1.70	13G	12/31/2024	14 Feb 2025 16:11:02

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
6/30/2025	2.53%	-1.27%	$14.6M	5.62M	-2,820,278	-33.4%	$2.60	Q2 2025
3/31/2025	2.76%	-0.04%	$16M	8.44M	-125,113		$1.90	Q1 2025
12/31/2024	1.76%	+0.6%	$12.4M	8.57M	+2,926,002	+51.9%	$1.45	Q4 2024
9/30/2024	1.56%	+0.18%	$10.4M	5.64M	+636,808	+12.7%	$1.84	Q3 2024
6/30/2024	0.78%	+0.63%	$5.01M	5.01M	+3,033,684	+154%	$1.00	Q2 2024
3/31/2024	0.63%	+0.91%	$3.9M	1.97M	+1,971,402	NEW	$1.98	Q1 2024

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.