Compass Therapeutics (CMPX) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)
Updated Oct 16, 2026, 4:00 PM ET
- Closed at $0.86, -4.12% vs the prior close of $0.90.
- Volume 2.04M shares, 0.4x its 50-day average (light).
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
CMPX slides 4.1% to $0.86. Closed at $0.86, -4.12% vs the prior close of $0.90. Day range $0.86–$0.91, opened at $0.90.
CMPX daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 16, 2026 — CMPX slides 4.1% to $0.86
- Closed at $0.86, -4.12% vs the prior close of $0.90. Day range $0.86–$0.91, opened at $0.90.
- Volume was 2.04M shares, 0.4x its 50-day average of 4.78M — lighter than usual.
- Price is -51.3% vs its 50-day average ($1.77) and -74.8% vs its 200-day average ($3.42).
- 52-week range $0.82–$6.88; today's close sits at 1% of that range, 87.5% below the 52-week high.
Oct 15, 2026 — CMPX rises 2.0% to $0.90
- Closed at $0.90, +2.05% vs the prior close of $0.88. Day range $0.85–$0.90, opened at $0.86.
- Volume was 3.34M shares, 0.7x its 50-day average of 4.79M.
- Price is -49.8% vs its 50-day average ($1.79) and -73.9% vs its 200-day average ($3.44).
- 52-week range $0.82–$6.88; today's close sits at 1% of that range, 87.0% below the 52-week high.
Oct 14, 2026 — CMPX rises 2.6% to $0.88
- Closed at $0.88, +2.57% vs the prior close of $0.86. Day range $0.82–$0.88, opened at $0.83.
- Volume was 4.97M shares, 1.0x its 50-day average of 4.76M.
- Price is -51.4% vs its 50-day average ($1.81) and -74.6% vs its 200-day average ($3.46).
- 52-week range $0.82–$6.88; today's close sits at 1% of that range, 87.2% below the 52-week high.
Oct 13, 2026 — CMPX slides 8.6% to $0.86
- Closed at $0.86, -8.64% vs the prior close of $0.94. Day range $0.85–$0.94, opened at $0.93.
- Volume was 3.80M shares, 0.8x its 50-day average of 4.75M.
- Price is -53.2% vs its 50-day average ($1.83) and -75.4% vs its 200-day average ($3.48).
- 52-week range $0.83–$6.88; today's close sits at 0% of that range, 87.5% below the 52-week high.
Oct 12, 2026 — CMPX slides 5.5% to $0.94
- Closed at $0.94, -5.54% vs the prior close of $0.99. Day range $0.92–$0.99, opened at $0.99.
- Volume was 4.43M shares, 0.9x its 50-day average of 4.71M.
- Price is -49.3% vs its 50-day average ($1.85) and -73.2% vs its 200-day average ($3.50).
- 52-week range $0.83–$6.88; today's close sits at 2% of that range, 86.4% below the 52-week high.
Oct 9, 2026 — CMPX rises 1.0% to $0.99
- Closed at $0.99, +1.02% vs the prior close of $0.98. Day range $0.98–$1.05, opened at $0.99.
- Volume was 3.67M shares, 0.8x its 50-day average of 4.68M.
- Price is -46.9% vs its 50-day average ($1.87) and -71.8% vs its 200-day average ($3.53).
- 52-week range $0.83–$6.88; today's close sits at 3% of that range, 85.6% below the 52-week high.
Oct 8, 2026 — CMPX slides 3.6% to $0.98
- Closed at $0.98, -3.63% vs the prior close of $1.02. Day range $0.96–$1.01, opened at $1.01.
- Volume was 7.04M shares, 1.5x its 50-day average of 4.60M.
- Price is -48.0% vs its 50-day average ($1.89) and -72.3% vs its 200-day average ($3.55).
- 52-week range $0.83–$6.88; today's close sits at 3% of that range, 85.7% below the 52-week high.
Oct 7, 2026 — CMPX rises 2.2% to $1.02, 3 up days in a row
- Closed at $1.02, +2.20% vs the prior close of $1.00. Day range $0.96–$1.05, opened at $0.98.
- Volume was 2.79M shares, 0.6x its 50-day average of 4.61M.
- Price is -46.5% vs its 50-day average ($1.91) and -71.4% vs its 200-day average ($3.57).
- 52-week range $0.83–$6.88; today's close sits at 3% of that range, 85.2% below the 52-week high.
- That makes 3 straight gains.
Oct 6, 2026 — CMPX jumps 3.9% to $1.00
- Closed at $1.00, +3.85% vs the prior close of $0.96. Day range $0.94–$1.02, opened at $0.99.
- Volume was 7.28M shares, 1.6x its 50-day average of 4.53M.
- Price is -48.2% vs its 50-day average ($1.93) and -72.2% vs its 200-day average ($3.59).
- 52-week range $0.83–$6.88; today's close sits at 3% of that range, 85.5% below the 52-week high.
Oct 5, 2026 — CMPX jumps 12.1% to $0.96 on 3.7x normal volume
- Closed at $0.96, +12.14% vs the prior close of $0.86. Day range $0.89–$1.00, opened at $0.91.
- Volume was 15.83M shares, 3.7x its 50-day average of 4.25M — unusually heavy trading.
- Price is -50.7% vs its 50-day average ($1.95) and -73.4% vs its 200-day average ($3.61).
- 52-week range $0.83–$6.88; today's close sits at 2% of that range, 86.0% below the 52-week high.
Oct 2, 2026 — CMPX slides 4.9% to $0.86, a 52-week low on 5.4x normal volume
- Closed at $0.86, -4.88% vs the prior close of $0.90. Day range $0.83–$0.98, opened at $0.94.
- Volume was 20.75M shares, 5.4x its 50-day average of 3.88M — unusually heavy trading.
- Price is -56.5% vs its 50-day average ($1.97) and -76.4% vs its 200-day average ($3.63).
- 52-week range $0.83–$6.88; today's close sits at 0% of that range, 87.5% below the 52-week high.
- That makes 10 straight losses.
CMPX latest news & SEC filings
Every SEC filing by or about CMPX in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 2, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Lerner Neil bought 20,000 shares at $0.92 (≈$18.40K) on Oct 1, 2026; now holds 420,000
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 25, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Lerner Neil bought 2,500 shares at $1.14 (≈$2.85K) on Sep 24, 2026; now holds 400,000
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 22, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Aug 14, 2026 · Form SCHEDULE 13G/A — Update to a passive 5%+ stake (13G)
Update to a passive 5%+ stake (13G)
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Aug 7, 2026 · Form SCHEDULE 13G — Passive stake (13G)
Passive stake (13G) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Aug 6, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Net income: -$25.15M (prior year -$19.88M) (loss widened vs Jun 30, 2025)
- Diluted EPS: -$0.13 (prior year -$0.14) (loss narrowed vs Jun 30, 2025)
Aug 6, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Jul 1, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Jun 23, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.03 — Amended its charter or bylaws / changed fiscal year.
Things to know before you trade CMPX
- Last results release: Aug 6, 2026 (8-K Item 2.02). Previous ones: May 5, 2026, Mar 5, 2026, Jan 6, 2026. Based on that rhythm, the next report is likely around Nov 5, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 5.86% (largest 31.9%). That is a volatile stock.
- Liquidity: about 7.24M shares (≈$6.23M) trade per day on average.
- 52-week position: $0.86 vs a range of $0.82–$6.88 (1% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 12 open-market buys, 0 sales; latest: Neil Lerner bought 2,500 shares on Sep 24, 2026.
- Latest filings: 8-K Sep 22, 2026; 10-Q Aug 6, 2026; 8-K Aug 6, 2026.
- Share count: 180.09M shares outstanding (Jul 28, 2026), +30.2% vs a year earlier — notable dilution.
- Listing: Nasdaq · industry: Biological Products, (No Diagnostic Substances).
CMPX market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 16, 2026 | 0.90 | 0.91 | 0.86 | 0.86 | 2.04M |
| Oct 15, 2026 | 0.86 | 0.90 | 0.85 | 0.90 | 3.34M |
| Oct 14, 2026 | 0.83 | 0.88 | 0.82 | 0.88 | 4.97M |
| Oct 13, 2026 | 0.93 | 0.94 | 0.85 | 0.86 | 3.80M |
| Oct 12, 2026 | 0.99 | 0.99 | 0.92 | 0.94 | 4.43M |
| Oct 9, 2026 | 0.99 | 1.05 | 0.98 | 0.99 | 3.67M |
| Oct 8, 2026 | 1.01 | 1.01 | 0.96 | 0.98 | 7.04M |
| Oct 7, 2026 | 0.98 | 1.05 | 0.96 | 1.02 | 2.79M |
| Oct 6, 2026 | 0.99 | 1.02 | 0.94 | 1.00 | 7.28M |
| Oct 5, 2026 | 0.91 | 1.00 | 0.89 | 0.96 | 15.83M |
| Oct 2, 2026 | 0.94 | 0.98 | 0.83 | 0.86 | 20.75M |
| Oct 1, 2026 | 1.03 | 1.05 | 0.90 | 0.90 | 10.07M |
| Sep 30, 2026 | 1.10 | 1.10 | 1.02 | 1.04 | 5.65M |
| Sep 29, 2026 | 1.12 | 1.15 | 1.09 | 1.10 | 3.50M |
| Sep 28, 2026 | 1.15 | 1.15 | 1.10 | 1.11 | 3.70M |
| Sep 25, 2026 | 1.17 | 1.20 | 1.12 | 1.13 | 3.53M |
| Sep 24, 2026 | 1.17 | 1.17 | 1.10 | 1.13 | 4.53M |
| Sep 23, 2026 | 1.22 | 1.23 | 1.13 | 1.17 | 7.69M |
| Sep 22, 2026 | 1.25 | 1.44 | 1.15 | 1.24 | 27.20M |
| Sep 21, 2026 | 1.88 | 1.88 | 1.80 | 1.82 | 2.99M |
About Compass Therapeutics
Compass Therapeutics (CMPX) is listed on the Nasdaq and classified by the SEC under “Biological Products, (No Diagnostic Substances)”. Its business address is in BOSTON, MA. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 1738021.
CMPX board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| James P Boylan | Director | Jan 5, 2026 |
| Ellen Chiniara | Director | Jan 5, 2026 |
| Philip Ferneau | Director | Jan 5, 2026 |
| Carl L Gordon | Director | Jan 5, 2026 |
| Mary Ann Gray | Director | Jan 5, 2026 |
| Richard S Lindahl | Director | Jan 5, 2026 |
| Thomas J. Schuetz | CHIEF EXECUTIVE OFFICER | Feb 10, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Jonathan Anderman | General Counsel | Apr 30, 2026 |
| Neil Lerner | Chief Accounting Officer | Sep 25, 2026 |
| Arjun Prasad | Chief Commercial Officer | Jan 5, 2026 |
| Thomas J. Schuetz | CHIEF EXECUTIVE OFFICER | Feb 10, 2026 |
| Barry Shin | CFO | Jan 5, 2026 |
| Cynthia Sirard | Chief Medical Officer | Jan 5, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Sep 24, 2026 | Neil Lerner | Buy | 2,500 | $1.14 |
| Sep 24, 2026 | Neil Lerner | Buy | 2,500 | $1.14 |
| Sep 24, 2026 | Neil Lerner | Buy | 2,500 | $1.14 |
| Sep 24, 2026 | Neil Lerner | Buy | 2,500 | $1.14 |
| Apr 29, 2026 | Neil Lerner | Buy | 15,000 | $1.89 |
| Apr 29, 2026 | Neil Lerner | Buy | 15,000 | $1.89 |
| Apr 29, 2026 | Neil Lerner | Buy | 15,000 | $1.89 |
| Apr 29, 2026 | Neil Lerner | Buy | 15,000 | $1.89 |
| Apr 29, 2026 | Jonathan Anderman | Buy | 25,000 | $1.89 |
| Apr 29, 2026 | Jonathan Anderman | Buy | 25,000 | $1.89 |
| Apr 29, 2026 | Jonathan Anderman | Buy | 25,000 | $1.89 |
| Apr 29, 2026 | Jonathan Anderman | Buy | 25,000 | $1.89 |
CMPX financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | — | $-66.49M | -0.42 | $-49.14M |
| Dec 31, 2024 | — | $-49.38M | -0.36 | $-44.85M |
| Dec 31, 2023 | — | $-42.49M | -0.33 | $-40.62M |
| Dec 31, 2022 | — | $-39.23M | -0.37 | $-34.12M |
| Dec 31, 2021 | — | $-82.18M | -1.31 | $-19.67M |
Latest balance sheet: total assets $190.17M, total liabilities $24.12M, cash $35.45M (as of Jun 30, 2026).
CMPX earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Aug 6, 2026 | 8-K Item 2.02 (results) | $1.99 |
| May 5, 2026 | 8-K Item 2.02 (results) | $1.95 |
| Mar 5, 2026 | 8-K Item 2.02 (results) | $5.53 |
| Jan 6, 2026 | 8-K Item 2.02 (results) | $4.91 |
| Nov 5, 2025 | 8-K Item 2.02 (results) | $3.82 |
| Aug 11, 2025 | 8-K Item 2.02 (results) | $3.34 |
| May 8, 2025 | 8-K Item 2.02 (results) | $1.78 |
| Feb 27, 2025 | 8-K Item 2.02 (results) | $2.92 |
| Jan 8, 2025 | 8-K Item 2.02 (results) | $1.86 |
| Nov 12, 2024 | 8-K Item 2.02 (results) | $1.79 |
| Aug 12, 2024 | 8-K Item 2.02 (results) | — |
| May 13, 2024 | 8-K Item 2.02 (results) | — |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 16, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.