Compass Therapeutics ($CMPX) Insider Trading & Smart Money Activity
Compass Therapeutics, Inc. ($CMPX) has 2 insider trades and 2 13F position changes on file. In the last 12 months on the open market, 1 insider bought ($21.25K) and no insider sold, net +$21.25K.
- Insider buyers (12 mo)
- 1
- Insider sellers (12 mo)
- 0
- Net insider $ (12 mo)
- +$21.25K
- Congress trades (12 mo)
- 0
- 13F moves on file
- 2
- Analyst ratings on file
- 0
CMPX insider buying and selling by quarter
| Quarter | Insider buys | Insider sales | Congress buys / sales | 13F added / cut |
|---|---|---|---|---|
| Q1 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q2 2026 | 0 | 0 | 0 / 0 | 2 / 0 |
| Q3 2026 | 1 · $2.85K | 0 | 0 / 0 | 0 / 0 |
| Q4 2026 | 1 · $18.40K | 0 | 0 / 0 | 0 / 0 |
Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.
All CMPX insider, congress, 13F and analyst activity
| Date | Source | Who | Action | Shares | Value / amount | ΔOwn | 1W | 1M | 6M | Filing | Story |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insider | Lerner NeilChief Accounting Officer | Buy (Open-market buy) | 20K sh | $18.40K | +8.9% | — | |||||
| Insider | Lerner NeilChief Accounting Officer | Buy (Open-market buy) | 2.50K sh | $2.85K | -21.1% | — | |||||
| 13F | Rtw Investments | Added | +1.69M sh | $8.62M | +11.3% | +9.7% | Read | ||||
| 13F | Rtw Investments | Added | +1.69M sh | $8.37M | +11.3% | +9.7% | Read |
1W / 1M / 6M = how CMPX moved from the trade or filing date.
Insider trading in CMPX: who is buying and selling
| Insider | Role | Trades | Open-market net | Shares held | Last trade |
|---|---|---|---|---|---|
| Lerner Neil | Chief Accounting Officer | 2 | +$21.25K | Oct 1, 2026 |
Institutions moving CMPX (13F)
Frequently asked questions
Are CMPX insiders buying or selling?
Over the last 12 months 1 insider made 2 open-market purchases worth $21.25K and 0 insiders made 0 open-market sales worth $0, a net +$21.25K.
What is the latest insider trade in CMPX?
Lerner Neil, Chief Accounting Officer filed a buy (open-market buy) of 20K sh worth $18.40K on Oct 1, 2026.
Which institutions changed their CMPX positions?
Recent 13F filers moving the stock include Rtw Investments.
Other biotechnology stocks
Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.
Get a text when insiders, Congress or big funds trade a stock.
Free. Reply STOP anytime.
SMS Terms
By entering your mobile number and tapping the sign-up button, you provide express written consent to receive recurring automated text messages from TradeTexts at that number, including stock alerts about SEC filings, insider and congress trades, analyst ratings, hedge fund moves, and earnings results. Consent is not a condition of any purchase. Message frequency varies. Messages are not investment advice. Message and data rates may apply. Reply HELP for help and STOP to opt out at any time. See our Terms and Privacy Policy.