StockCIK 1738021
Compass Therapeutics, Inc. (CMPX): Insider Trades and Fund Holdings
In the past 12 months, Compass Therapeutics, Inc. insiders reported 2 open-market purchases worth $21K and 0 sales worth $0.
2Insider buys, 12 months
$21KBought by insiders, 12 months
$0Sold by insiders, 12 months
0Tracked funds holding
Timeline: news and trades
Company filings (8-K), insider trades, notices of planned sales (Form 144) and fund moves in the past year, newest first.
- Oct 1, 2026Insider buyCAO Neil Lerner bought $18,400
- Sep 24, 2026Insider buyCAO Neil Lerner bought $2,850
Recent insider trades
Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 2, 2026.
| Filed | Insider | Type | Value |
|---|---|---|---|
| Oct 2 | Neil LernerCAO | ▲ BUY | $18K |
| Sep 25 | Neil LernerCAO | ▲ BUY | $3K |
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings
Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| Neil Lerner | CAO | 2 | $21K | 0 | $0 |
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →