Ownership history in MPM BioImpact LLC · 7 quarters on record
This page tracks every 13F SEC filing in which MPM BioImpact LLC reported a position in Compass Therapeutics, Inc. (CMPX). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q3 | REDUCED | 5,075,970 | -546,535 | -9.7% | 2.91% | $17.8M | $3.50 |
| 2025 Q2 | REDUCED | 5,622,505 | -2,820,278 | -33.4% | 2.53% | $14.6M | $2.60 |
| 2025 Q1 | REDUCED | 8,442,783 | -125,113 | -1.5% | 2.76% | $16.0M | $1.90 |
| 2024 Q4 | ADDED | 8,567,896 | +2,926,002 | +51.9% | 1.76% | $12.4M | $1.45 |
| 2024 Q3 | ADDED | 5,641,894 | +636,808 | +12.7% | 1.56% | $10.4M | $1.84 |
| 2024 Q2 | ADDED | 5,005,086 | +3,033,684 | +153.9% | 0.78% | $5.0M | $1.00 |
| 2024 Q1 | INITIATED | 1,971,402 | — | — | 0.63% | $3.9M | — |
As of 2025 Q4 — sorted by position size