Compass Therapeutics, Inc. - CMPX
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| May 15, 2026 | SCHEDULE 13G/A | BIOTECHNOLOGY VALUE FUND L P | 2.3% | 4,142,020 | View |
| May 15, 2026 | SCHEDULE 13G/A | BVF I GP LLC | 2.3% | 4,142,020 | View |
| May 15, 2026 | SCHEDULE 13G/A | BIOTECHNOLOGY VALUE FUND II LP | 1.7% | 3,028,951 | View |
| May 15, 2026 | SCHEDULE 13G/A | BVF II GP LLC | 1.7% | 3,028,951 | View |
| May 15, 2026 | SCHEDULE 13G/A | Biotechnology Value Trading Fund OS LP | 0.3% | 476,311 | View |
| May 15, 2026 | SCHEDULE 13G/A | BVF Partners OS Ltd. | 0.3% | 476,311 | View |
| May 15, 2026 | SCHEDULE 13G/A | BVF GP HOLDINGS LLC | 4.0% | 7,170,971 | View |
| May 15, 2026 | SCHEDULE 13G/A | BVF PARTNERS L P/IL | 4.3% | 7,764,842 | View |
| May 15, 2026 | SCHEDULE 13G/A | BVF INC/IL | 4.3% | 7,764,842 | View |
| May 15, 2026 | SCHEDULE 13G/A | LAMPERT MARK N | 4.3% | 7,764,842 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Blackstone Annex Master Fund L.P. | 1.4% | 2,447,820 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Spruce Street Aggregator L.P. | 2.1% | 3,678,362 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Blackstone Alternative Asset Management Associates LLC | 3.4% | 6,126,182 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Blackstone Holdings II L.P. | 3.4% | 6,126,182 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Blackstone Holdings I/II GP L.L.C. | 3.4% | 6,126,182 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Blackstone Inc. | 3.4% | 6,126,182 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Blackstone Group Management L.L.C. | 3.4% | 6,126,182 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Stephen A. Schwarzman | 3.4% | 6,126,182 | View |
| Jan 21, 2026 | SCHEDULE 13G | BlackRock, Inc. | 5.2% | 9,271,644 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.