Companies / Compass Therapeutics, Inc.
Compass Therapeutics, Inc.
Nasdaq: CMPXCIK 1738021BOSTON, MA
Financials
Ownership
180.1M shares outstanding · as of Jul 28, 2026
Ownership
| Insiders | 4.27% | 7,681,836 |
| 10%+ / strategic | 10.68% | 19,225,297 |
| Institutions | 82.11% | 147,872,070 |
| Public float | 2.95% | 5,308,712 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 12
View all →| Insider | % of shares | Shares |
|---|---|---|
Schuetz Thomas J.CEOCHIEF EXECUTIVE OFFICER · Director | 3.67% | 6,603,336 |
Shin BarryCFO | 0.29% | 525,000 |
Lerner NeilChief Accounting Officer | 0.21% | 382,500 |
Anderman JonathanGeneral Counsel | 0.09% | 171,000 |
Boylan James PDirector | — | — |
Chiniara EllenDirector | — | — |
Ferneau PhilipDirector | — | — |
Gordon Carl LDirector | — | — |
Gray Mary AnnDirector | — | — |
Lindahl Richard SDirector | — | — |
Institutional holders 178
View all →| Holder | Value | % of shares |
|---|---|---|
| $88.82M | 9.32% | |
| $80.51M | 8.45% | |
| $76.16M | 7.88% | |
| $51.26M | 5.30% | |
| $44.89M | 4.71% | |
| $43.22M | 4.47% | |
| $41.82M | 4.32% | |
| $41.08M | 4.31% | |
| $24.71M | 6.26% | |
| $21.80M | 5.53% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Atle Fund Management AB 13F manager | Trim | Common stock | $-39.57M | -543K -92.84% | 41,831 0.02% of shares | medium |
| Q1 2026 as of | Adage Capital Partners Gp, L.L.C. 13F manager | Add | Common stock | $21.42M | +4.0M +91.29% | 8,486,500 4.71% of shares | medium |
| Q1 2026 as of | Millennium Management LLC 13F manager | Trim | Common stock | $-11.97M | -2.3M -72.78% | 846,220 0.47% of shares | medium |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common stock | $11.09M | +5.1M +103.53% | 9,953,653 5.53% of shares | medium |
| Q1 2026 as of | Blackstone Inc 13F manager | New | Common stock | $9.83M | +1.9M | 1,857,848 1.03% of shares | medium |
| Q1 2026 as of | Great Point Partners, LLC 13F manager | New | Common stock | $7.14M | +1.4M | 1,350,000 0.75% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Exit | Common stock | $-6.79M | -1.3M -100.00% | 0 | medium |
| Q1 2026 as of | Palo Alto Investors LP 13F manager | Trim | Common stock | $-5.38M | -1.0M -40.20% | 1,514,504 0.84% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| State Street Corporation | Passive13G | — |
| Blackstone Annex Master Fund L.P. | Passive13G/A | — |
| BlackRock, Inc. | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| CMPX | — | 20454B104 |