CMPX insider buying
1 cluster buyCompass Therapeutics, Inc. · Healthcare
When two or more insiders at Compass Therapeutics, Inc. buy CMPX on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in CMPX plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Apr 7 – May 27, 2025Detected May 27, 2025High conviction3 insidersTotal bought$80.3KMarket cap$412.4M
All notable open-market buys in CMPX
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| May 27, 2025 | Schuetz Thomas J.cluster Director, CHIEF EXECUTIVE OFFICER | 10,000 | $2.11 | $21.1K | SEC ↗ |
| Apr 7, 2025 | Anderman Jonathancluster Gen Counsel & Corporate Sec | 20,000 | $1.54 | $30.8K | SEC ↗ |
| Apr 7, 2025 | Lerner Neilcluster CHIEF ACCOUNTING OFFICER | 20,000 | $1.42 | $28.4K | SEC ↗ |
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CMPX insider buying — FAQ
- Are insiders buying CMPX stock?
- Yes — 3 distinct insiders have bought CMPX (Compass Therapeutics, Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was May 27, 2025.
- How much CMPX stock have insiders bought?
- Insiders have bought a combined $80.3K of CMPX across 3 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in CMPX?
- A cluster buy is two or more distinct Compass Therapeutics, Inc. insiders — officers, directors, or 10% owners — each buying CMPX on the open market within a rolling window. CMPX has 1 detected cluster buy to date.
- Where does this CMPX insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in CMPX
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy CMPX within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding CMPX.