Company profile
Compass Therapeutics, Inc. Insider Trading
CMPXEvery SEC Form 4 insider trading filing for Compass Therapeutics, Inc. (CMPX) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Biological Products, (No Diagnostic Substances)
- CIK
- 0001738021
- Filings
- 51
- Insiders
- 16
- Last filing
- 2026-04-29
Activity summary
No insider transactions in the last 30 days. The most recent was on April 29, 2026, when Neil Lerner bought 15,000 shares. 51 filings from 16 insiders are on record below.
Three year balance
Buy and sell value by quarter, Q3 23 to Q2 26. Compass Therapeutics, Inc. insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $11.4M.
No insider activity recorded for CMPX in the last 90 days.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Apr 29, 2026 | Neil Lerner | CMPX | Award | 15,000 | $1.89 | $28K |
| Apr 29, 2026 | Jonathan Anderman | CMPX | Award | 25,000 | $1.89 | $47K |
| Apr 29, 2026 | Neil Lerner | CMPX | Purchase | 15,000 | $1.89 | $28K |
| Apr 29, 2026 | Jonathan Anderman | CMPX | Purchase | 25,000 | $1.89 | $47K |
| Feb 8, 2026 | Thomas J. Schuetz | CMPX | Tax Withholding | 36,687 | $6.52 | $239K |
45 more transactions hidden
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Compass Therapeutics, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →