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Compass Therapeutics, Inc. (CMPX) stock

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NASDAQ: CMPX Nasdaq Biotechnology Next results ~November 5, 2026

Compass Therapeutics, Inc. is a US-listed company in the biotechnology industry. Its financial year ends in December.

Who’s trading

What company insiders, investment funds and members of Congress have been doing with the stock, from their own filings.

  • Insiders2 buying, 0 selling4 purchases and 0 sales by directors and officers, last 12 monthsInsider trades
  • Funds147 adding, 89 cuttingOf 52 active managers that changed their stake, 32 added; quarter to June 30, 2026Fund buyers and sellers

The Fundamentalytics view

Next results ~November 5, 2026 (estimated)

Current signal Share count rising (dilution): Diluted shares outstanding rose 31.8% year over year.

Assembled from SEC-filed figures — the full workings are on this page and in our methodology. Observations, not recommendations.

Strengths

Nothing in Compass Therapeutics, Inc.'s latest figures clears our strength thresholds.

Things to watch

  • Share dilution. Diluted shares rose 31.8% in a year.
  • Volatile shares. Over the past year the shares showed annualised volatility of 95% and a beta of 1.3 against the S&P 500.
  • Heavily shorted. 27.8% of the shares available to trade are sold short (6.1 days of average volume to cover).
  • Missing expectations. Earnings per share fell short of the consensus estimate in 3 of the last four quarters.

Latest results: FY2025 Q4

Filed March 5, 2026
Earnings per share
-$0.13 against an average estimate of -$0.11: missed by 20.0%
Share reaction
+13.8% in the first session after the results on August 6, 2026, against +0.5% for the S&P 500
Next report
November 5, 2026; average EPS estimate -$0.13

Compass Therapeutics' figures from its SEC filings and results release; estimates are the analysts' average. Not a recommendation.

Price chart

  • 1 day-2.4%
  • 1 week+2.8%
  • 1 month-10.4%
  • This year-85.7%
  • 1 year-79.5%
  • 5 years-78.4%
  • S&P 500 this year+11.2%

Closing prices to 2026-11-02. Price change only, dividends excluded.

Loading chart…

Third-party market data · may be delayed

At a glance

Trailing twelve months, from SEC filings

Profitability

EPS (TTM, diluted)
$-0.40

Growth

Share count change
+31.8%

Earnings

Last results
August 6, 2026

News & updates

Updated October 31, 2026

Company announcements, filed results and changes that matter to shareholders.

  1. Announcement
  2. Results

Refreshed hourly when new source data is available. Summaries are checked against company releases and SEC filings. Company announcement headlines are labelled when a checked summary is unavailable.

No model value for Compass Therapeutics, Inc. at the moment. Current status: limited reported history: available models are shown without a Buy/Hold/Sell rating. Available reported financials are shown below.

Fundamentalytics rating

model v1.6 · 2026-11-03

Not rated: limited reported history: available models are shown without a Buy/Hold/Sell rating.

The inputs used by the models below have passed source checks. Individual model values are available below and in the interactive valuator. Their differences are shown explicitly; the platform combined value and recommendation remain withheld.

Valuation models

We value Compass Therapeutics, Inc. as an operating company, with every model that fits that kind of business. Cost of equity 10.5%: the 10-year Treasury yield (4.9%) plus a beta of 1.23 times a 4.5% equity risk premium.

Value per share by model
Model Value per share In the combined value?
Price-to-earnings vs peers Earnings per share times peers' typical (harmonic-mean) price-to-earnings. — Does not apply: This model is withheld pending its input or assumption review.
Residual income Book value plus the present value of returns above the cost of equity, fading over ten years. — Does not apply: This model is withheld pending its input or assumption review.
Justified price-to-book Book value times (return on equity - growth) / (cost of equity - growth): steady-state returns. — Does not apply: This model is withheld pending its input or assumption review.
Revenue-to-maturity model Revenue grown to maturity with the cash margin moving to the industry's; for companies not yet profitable. — Does not apply: This model is withheld pending its input or assumption review.
Forward price-to-sales vs peers Next year's consensus sales per share times peers' typical forward price-to-sales; only when earnings are negative. Uses analysts' consensus estimates (third-party data), not our forecasts. ~$0.1 ~$0.1–$0.4 Left out: out of range vs price (0.14x)
Combined value Individual source-checked model scenarios are available. The platform combined value and recommendation remain withheld. — Combined value withheld. Review the individual models and their assumptions.

Different models fail in different ways, so where several apply we average them rather than trust one. Peer-based models compare Compass Therapeutics, Inc. with Biotechnology in our coverage, using third-party market data. Model values are estimates under stated assumptions, updated as new filings arrive; not price targets or investment advice. How each model works.

Moat

Not assessed: fewer than five years of comparable figures in the filings. AI disruption exposure for this industry: Medium.

A rules-based reading of reported figures, not a forecast and not investment advice. How the score is built: methodology.

Forecasts and guidance

Next results: November 5, 2026, before the open. Analysts expect revenue of $0 and EPS of −$0.13 (range −$0.15 to −$0.10) for the quarter.

Analysts' consensus

Compass Therapeutics, Inc.: consensus estimates
Fiscal yearEPSGrowthRevenueGrowth
Current −$0.48 −15% — 0%
Next −$0.54 −11% $7m 0%

How the EPS forecast has moved

The consensus EPS forecast for the current fiscal year is +11.6% on 90 days ago. In the last 30 days, 3 analysts raised Compass Therapeutics, Inc.'s forecast and 0 cut it.

Consensus EPS forecast Compass Therapeutics, Inc., last 90 days
−$0.60 −$0.40 −$0.20 $0.00 90 days ago 60 days ago 30 days ago 7 days ago Now Current fiscal year, 90 days ago: −$0.43 Current fiscal year, 60 days ago: −$0.49 Current fiscal year, 30 days ago: −$0.48 Current fiscal year, 7 days ago: −$0.48 Current fiscal year, Now: −$0.48 −$0.48 Next fiscal year, 90 days ago: −$0.46 Next fiscal year, 60 days ago: −$0.54 Next fiscal year, 30 days ago: −$0.54 Next fiscal year, 7 days ago: −$0.54 Next fiscal year, Now: −$0.54 −$0.54

Average of analysts' published estimates (third-party data).

View chart data
Period Current fiscal yearNext fiscal year
90 days ago −$0.43−$0.46
60 days ago −$0.49−$0.54
30 days ago −$0.48−$0.54
7 days ago −$0.48−$0.54
Now −$0.48−$0.54

Earnings against estimates

Compass Therapeutics, Inc.: reported EPS against the consensus estimate
Quarter toEstimateActualSurprise
Jun 2026 −$0.11 −$0.13 −20.0%
Mar 2026 −$0.10 −$0.10 0.0%
Dec 2025 −$0.09 −$0.09 −2.6%
Sept 2025 −$0.13 −$0.08 +39.6%

Adjusted EPS as companies report it, against the average analyst estimate.

Analyst recommendations

15 analysts, Oct 2026
Buy1280%
Hold320%
Sell00%

Monthly trend

  1. Oct 2026210315
  2. Sep 2026210315
  3. Aug 202621215
  4. Jul 202621215

Counts of recommendations published by analysts covering Compass Therapeutics, Inc., by month. Source: Aggregated broker recommendations (third-party data). Aggregated counts only: we do not reproduce any firm's recommendation or price target, and these are not Fundamentalytics ratings.

Positioning

Short interest
27.8%
of tradable shares
Days to cover
6.08
at average volume
Short interest, 1 month
+0%
to October 15, 2026
Held by institutions
88%
of shares
Held by insiders
12.5%
of shares
Employees
39
full time

Consensus figures average analysts' published estimates (third-party data); guidance is the company's own. Neither is our forecast. Short interest is reported twice a month and lags. Market data may be delayed.

This section is general information, not investment advice or a personal recommendation, and it does not take account of your objectives or circumstances. Forecasts and guidance are estimates, not promises: companies miss their own guidance and analysts' figures are often revised. Prices can fall as well as rise, and you can lose money. See our disclaimer.

Share-price performance

Market data may be delayed

Return and risk by year

Compass Therapeutics, Inc.: yearly return, monthly win rate and worst fall against the S&P 500
Calendar year 20222023202420252026 to date
Return
CMPX+59%−69%−7%+270%−86%
Industry peers (median)−57%−17%−29%−5%−26%
S&P 500−18%+26%+25%+18%+11%
Months that ended higher
CMPX58%8%42%67%27%
S&P 50042%67%75%75%46%
Largest fall from a high during the year
CMPX−64%−75%−65%−63%−89%
S&P 500−25%−10%−8%−19%−9%

Worst fall since April 5, 2021: 92% from April 16, 2021 to October 26, 2026. Getting back needed a 1078% gain, and the shares have not yet recovered.

Price behaviour

52-week range
$0.75 – $6.69
From 52-week high
−88.5%
vs 50-day average
−46.3%
vs 200-day average
−75.7%
Volatility (1 year)
95%
Beta vs S&P 500
1.34

Volatility is the annualised standard deviation of daily returns. Beta 1.5 means the shares typically moved 1.5% for each 1% move in the S&P 500 over the past year. Prices to November 2, 2026.

Share price after results

Next day
8 up, 4 down
typical move ±8.7%
After a week
7 up, 5 down
typical move ±17.9%
After a month
8 up, 4 down
typical move ±39.6%
Compass Therapeutics, Inc.: share-price change after each results release
Results releasedNext dayS&P 500 next day5 days21 days
August 6, 2026 +13.8% +0.5% +19.6% +25.9%
May 5, 2026 −3.6% +2.2% −3.6% +9.8%
March 5, 2026 −3.2% −1.9% −8.8% −3.5%
January 6, 2026 +9.2% +0.3% +11.8% +24.6%
November 5, 2025 +5.5% −0.7% +29.3% +45.9%
August 11, 2025 +17.4% +0.9% +6.3% +30.4%
May 8, 2025 +3.4% +0.6% +14.8% +46.0%
February 27, 2025 −2.4% −0.1% −11.8% −33.0%
January 8, 2025 +23.8% −1.4% +74.8% +172.7%
November 12, 2024 −11.1% −0.3% −25.3% −20.5%
August 12, 2024 +10.1% +1.7% +9.2% +37.6%
May 13, 2024 +0.9% +0.5% 0.0% −25.0%

From the close before the release date to the close 1, 5 and 21 trading days after it, so releases before the open and after the close are both captured. Past moves don't predict future ones.

Fundamentals

Data: SEC EDGAR XBRL company facts (as filed in 10-K/10-Q); forms 10-K, 10-Q. Generated November 3, 2026. Definitions in our methodology.

Financial statements

US$ millions unless shown otherwise. Fiscal years, plus the last twelve months (LTM) when newer.

Compass Therapeutics, Inc.: annual financial statements
Fiscal year 2023 Dec 2023 2024 Dec 2024 2025 Dec 2025
Income
Revenue 0 1 0
EBITDA −50 −56 −73
Operating income −50 −57 −73
Net income −42 −49 −66
Growth (year on year)
Revenue — — −100.0%
Margins
EBITDA margin — <−999% —
Operating margin — <−999% —
Net margin — <−999% —
Free-cash-flow margin — <−999% —
Cash flow
Cash from operations −41 −45 −49
Capital spending 0 0 0
Free cash flow −41 −45 −49
Stock-based pay 6 9 8
Free cash flow after stock pay −47 −53 −58
Balance sheet
Cash 24 43 31
Total debt 0 0 0
Net debt (negative = net cash) −24 −43 −31
Diluted shares 127m 137m 158m

Source: SEC EDGAR XBRL company facts (US and foreign periodic filings); column headings link to the filing. EBITDA is operating income plus depreciation and amortisation. Free cash flow is cash from operations minus capital spending. Growth is left blank when last year's figure was a loss or under 2% of revenue. Share counts and EPS are restated for stock splits. A dash means the company didn't report the figure.

Dividends, buybacks and capital spending

Diluted share count
+31.8%
year over year
Reported value
$363M
Institutions reporting
216
Shares held vs prior quarter
▼ 4.3%
Positions opened / closed
63 / 45

Top buyers and sellers, Q2 2026: 147 institutions bought and 89 sold ; the biggest buyer was Palo Alto Investors LP (+4.3M shares) and the biggest seller Bvf Inc (−7.8M). See which funds bought and sold →

Largest reported holders, June 30, 2026
Manager Value Shares Share of 13F value Shares QoQ
Tang Capital Management LLC $39.4M 18.0M 10.8% ▲ 7.1%
Orbimed Advisors LLC $33.3M 15.2M 9.2% 0.0%
Montanova Capital, LLC $30.9M 14.1M 8.5% ▼ 1.4%
Blackrock, Inc. $24.7M 11.3M 6.8% ▲ 18.7%
State Street Corp $21.8M 10.0M 6.0% ▲ 48.7%
Enavate Sciences Gp, LLC $17.1M 7.8M 4.7% 0.0%
Vivo Capital, LLC $17M 7.8M 4.7% ▼ 18.7%
Vanguard Capital Management LLC $13.4M 6.1M 3.7% ▲ 1.4%
Palo Alto Investors LP $12.8M 5.8M 3.5% ▲ 285.1%
Millennium Management LLC $10.3M 4.7M 2.8% ▲ 457.0%
Geode Capital Management, LLC $8.4M 3.8M 2.3% ▲ 7.0%
Vanguard Portfolio Management LLC $8.3M 3.8M 2.3% ▲ 248.3%

From Form 13F filings with the SEC ( quarterly data sets), as reported by each manager for June 30, 2026 and filed up to 45 days later. 13F reports cover long US-listed positions of managers above $100M only, so this is not Compass Therapeutics, Inc.'s complete shareholder register. Values are as reported by the filers ; 1 inconsistently scaled filing rows were excluded.

Insider trading activity

Full insider history and chart
Recent insider open-market transactions
Insider Date Trade Shares Price Value
Lerner Neil Chief Accounting Officer October 1, 2026 Buy 20,000 $0.92 $18,400
Lerner Neil Chief Accounting Officer September 24, 2026 Buy 2,500 $1.14 $2,850
Anderman Jonathan General Counsel April 29, 2026 Buy 25,000 $1.89 $47,250
Lerner Neil Chief Accounting Officer April 29, 2026 Buy 15,000 $1.89 $28,350

From insiders' Form 4 filings with the SEC. Excludes awards, option exercises and shares withheld for tax. "Pre-set plan" means the filing marks the trade as made under a Rule 10b5-1 plan. See every insider trade since five years ago, on a price chart.

Earnings dates and SEC filings

Results announcements

  • August 6, 2026
  • May 5, 2026
  • March 5, 2026
  • January 6, 2026
  • November 5, 2025
  • August 11, 2025

Recent SEC filings

Data status

When each part of this page on Compass Therapeutics, Inc. was last updated.

DataLast updatedSource
Share priceExchange closing prices
Financial statementsSEC 10-K and 10-Q filings
News and updatesCompany releases and SEC 8-K filings
Analyst estimatesAggregated analyst estimates
Valuation and scoresOur models, from the filed figures

How we build and check these figures: methodology and data sources.

Compass Therapeutics, Inc. in brief

What does Compass Therapeutics, Inc. do?
Compass Therapeutics, Inc. is a US-listed company in the biotechnology industry. Its financial year ends in December.
What is Compass Therapeutics, Inc.'s stock ticker?
Compass Therapeutics, Inc. trades under the ticker CMPX on Nasdaq. This page brings together its financial statements, valuation models, ownership and recent company updates.
Who are Compass Therapeutics, Inc.'s largest institutional shareholders?
By value reported in 13F filings for June 30, 2026, the largest reported holders are Tang Capital Management LLC, Orbimed Advisors LLC and Montanova Capital, LLC. 13F reports cover long US-listed positions of managers above $100M, filed up to 45 days after quarter end.
What is Compass Therapeutics, Inc.'s market cap?
On December 31, 2025, Compass Therapeutics, Inc.'s market capitalisation was about $847M and net debt of -$30.6M. Market figures come from third-party market data and may be delayed.
Are insiders buying or selling Compass Therapeutics, Inc. stock?
Over the last 12 months, Compass Therapeutics, Inc.'s directors and officers reported 4 open-market purchases and 0 sales on Form 4. The insider trading page charts every trade.
When is Compass Therapeutics, Inc.'s next earnings date?
Around November 5, 2026, estimated from the spacing of its past results announcements (8-K filings). That is an estimate, not a confirmed date — Compass Therapeutics, Inc. announces its own schedule.