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Aptose Biosciences Inc. (APTO)

$1.71 +$1.71 (+100.00%) |CouncilHOLD · 49 · C
Bottom line: HOLD — our Council read (49/100) and AI Score (49/100) broadly agree.
MCap: $4.36M| P/E Ratio: 0.8| Vol: 648.2K| 52-wk range: $1.10 – $43.19
Data from FMP · Methodology

For informational purposes only. Not financial advice. Analysis by Sedat ANAK, Founder & Editor-in-Chief | AI-powered analysis. Data sourced from SEC filings and institutional-grade financial providers. Editorially reviewed. Not financial advice.

Aptose Biosciences Inc. (APTO) trades at $1.71 with AI Score 49/100 (Grade C). Aptose Biosciences Inc. is a clinical-stage biotechnology company focused on discovering and developing personalized therapies for oncology. Market cap: $4.36M, Sector: Healthcare.

Price live · AI analysis from May 31, 2026
Aptose Biosciences Inc. is a clinical-stage biotechnology company focused on discovering and developing personalized therapies for oncology. Their pipeline includes clinical programs targeting relapsed or refractory blood cancers.

Analyst Coverage for APTO: APTO does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage. In the absence of analyst consensus, our AI model evaluates APTO against Healthcare peers across nine fundamental dimensions and assigns an underweight signal based on the underlying data.

Council Score · Weighted Average of 3 Disciplines
HOLD 49/100 · C

APTO: the 1 perspectives are evenly split.

How is this calculated? →
Council Score · 8 perspectives · See tabs for details →

Aptose Biosciences Inc. (APTO) Healthcare & Pipeline Overview

CEOWilliam G. Rice
Employees35
HeadquartersToronto, CA
IPO Year1992

Aptose Biosciences Inc. is a clinical-stage biotechnology company specializing in personalized oncology therapies, particularly for relapsed or refractory blood cancers. Their pipeline, featuring drugs like luxeptinib and APTO-253, positions them in a competitive landscape focused on addressing unmet needs in hematologic malignancies within the biotechnology sector.

Data Provenance | Financial Data Quantitative Analysis NASDAQ Analysis: May 31, 2026

What Is the Investment Thesis for APTO?

Aptose Biosciences Inc. presents a high-risk, high-reward investment opportunity typical of clinical-stage biotechnology companies. The primary value driver is the successful progression of its clinical programs, particularly luxeptinib and APTO-253, through clinical trials. Positive Phase 2 results for luxeptinib in B-cell malignancies or APTO-253 in AML could serve as significant catalysts, potentially leading to partnerships or acquisition. The company's current market capitalization reflects the inherent uncertainty in drug development, with a P/E ratio of 0.8. However, failure to achieve clinical milestones or secure additional funding poses significant risks. Investors should closely monitor clinical trial data and cash runway.

Based on FMP financials and quantitative analysis

APTO Key Highlights

  • Aptose Biosciences is a clinical-stage company focused on oncology, indicating high-risk, high-reward potential.
  • The company's lead drug candidate, luxeptinib, is in Phase 1a/b clinical trials, representing a key value driver.
  • Aptose has a P/E ratio of 0.8, reflecting market expectations and potential value.
  • Aptose Biosciences has 35 employees, indicating a lean operational structure.
  • Aptose Biosciences has programs targeting AML and HR MDS, areas of significant unmet medical need.

Who Are APTO's Competitors?

APTO is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.

Company Price Change Market Cap AI Score
ARRY Array Technologies, Inc. $6.94 -0.37% $1.07B
GILD Gilead Sciences, Inc. $129.03 -1.70% $160.20B 94
VRTX Vertex Pharmaceuticals Incorporated $528.88 +0.16% $134.23B 99
SNDX Syndax Pharmaceuticals, Inc. $22.11 +1.33% $1.96B 79
ANAB AnaptysBio, Inc. $63.69 +0.43% $2.75B 79
ABVX Abivax S.A. $145.38 +0.51% $9.53B 76
CGEN Compugen Ltd. $2.37 +3.73% $223.62M 76
GLUE Monte Rosa Therapeutics, Inc. $23.06 -4.75% $1.50B 68

AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance

What Are APTO's Key Strengths?

  • Pipeline of clinical-stage oncology assets.
  • Focus on personalized therapies.
  • Agreements with CrystalGenomics and OHM Oncology.
  • Experienced leadership team.

What Are APTO's Weaknesses?

  • Clinical-stage company with no approved products.
  • Reliance on successful clinical trial outcomes.
  • Limited financial resources.
  • High cash burn rate.

What Could Drive APTO Stock Higher?

  • Phase 2 clinical trial data release for luxeptinib in B-cell malignancies (expected in 2027).
  • Phase 2 clinical trial data release for APTO-253 in AML (expected in 2027).
  • Enrollment and progression of patients in ongoing clinical trials.
  • Potential for new strategic partnerships or licensing agreements.

What Are the Key Risks for APTO?

  • Negative return on equity (-23.2%) — the business is not currently generating profit on shareholder capital.
  • Weak fundamentals — a Piotroski F-Score of 3/9 flags soft profitability, leverage or efficiency.
  • Insider selling — insiders were net sellers of roughly $6.4M recently.
  • Clinical trial failures for luxeptinib or APTO-253.
  • Regulatory delays or rejection of drug candidates.
  • Competition from other oncology therapies.
  • Dependence on securing additional funding to continue operations.
  • Patent challenges to the company's intellectual property.

What Are the Growth Opportunities for APTO?

  • Expansion of Luxeptinib into New Indications: Luxeptinib, currently in Phase 1a/b trials, has the potential to expand beyond B-cell malignancies, AML and HR MDS. Exploring its efficacy in other hematological cancers or even solid tumors could significantly broaden its market reach. The market for targeted therapies in oncology is projected to reach $107 billion by 2028, providing a substantial opportunity for Aptose if luxeptinib demonstrates broad applicability. This expansion would require further clinical trials and regulatory approvals, with a timeline of 3-5 years.
  • Advancement of APTO-253 in AML and HR MDS: APTO-253, in Phase 1a/b trials, targets relapsed or refractory AML and HR MDS. Positive clinical data could lead to accelerated development pathways and potential orphan drug designation, providing market exclusivity. The AML market is expected to reach $3.5 billion by 2027. Success in these indications would not only address unmet medical needs but also position Aptose as a key player in the treatment of these aggressive blood cancers. Expect Phase 2 data within the next 2 years.
  • Strategic Partnerships and Licensing Agreements: Aptose can leverage strategic partnerships with larger pharmaceutical companies to accelerate the development and commercialization of its drug candidates. Licensing agreements could provide upfront payments, milestone payments, and royalties, strengthening Aptose's financial position and reducing its development risk. The trend of pharmaceutical companies acquiring or partnering with smaller biotech firms with promising pipelines is ongoing, presenting a viable growth opportunity for Aptose. These deals can materialize within 1-3 years.
  • Development of APL-581: APL-581, a dual bromodomain and extra-terminal domain motif protein and kinase inhibitor program, represents a novel approach to cancer therapy. Further preclinical and clinical development of APL-581 could lead to a first-in-class drug with significant market potential. The market for epigenetic therapies is growing, driven by the increasing understanding of the role of epigenetics in cancer development. Expect initial clinical data within 3-4 years.
  • Geographic Expansion Beyond the United States: While Aptose primarily focuses on the United States market, expanding into other regions, such as Europe and Asia, could unlock new growth opportunities. These markets have a growing demand for innovative cancer therapies. However, geographic expansion would require navigating different regulatory landscapes and establishing local partnerships. This expansion could begin within 2-3 years, contingent on clinical trial success and regulatory approvals.

What Opportunities Does APTO Have?

  • Positive clinical trial results.
  • Strategic partnerships with larger pharmaceutical companies.
  • Expansion into new therapeutic areas.
  • Orphan drug designation for key drug candidates.

What Threats Does APTO Face?

  • Clinical trial failures.
  • Regulatory setbacks.
  • Competition from other oncology therapies.
  • Patent expirations.

What Are APTO's Competitive Advantages?

  • Proprietary drug candidates with patent protection.
  • Clinical trial data demonstrating efficacy and safety.
  • Expertise in developing personalized oncology therapies.
  • Strategic partnerships with other companies.

What Does APTO Do?

Aptose Biosciences Inc., established in 1986 and formerly known as Lorus Therapeutics Inc. until its rebranding in August 2014, is a clinical-stage biotechnology company dedicated to discovering and developing personalized therapies for unmet medical needs in oncology. Headquartered in Toronto, Canada, Aptose focuses primarily on the United States market. The company's pipeline includes several clinical programs, such as APTO-253, currently in Phase 1a/b clinical trials for treating patients with relapsed or refractory blood cancers, including acute myeloid leukemia (AML) and high-risk myelodysplastic syndrome (HR MDS). Another key program is HM43239, undergoing Phase 1/2 clinical trials for patients with relapsed or refractory AML. Aptose is also developing luxeptinib, in Phase 1a/b clinical trials for B-cell malignancies like chronic lymphocytic leukemia, small lymphocytic lymphoma, non-Hodgkin's lymphomas, as well as AML and HR MDS. Additionally, APL-581, a dual bromodomain and extra-terminal domain motif protein and kinase inhibitor program, is under development. Aptose has established agreements with CrystalGenomics, Inc. and OHM Oncology to further its research and development efforts. Aptose's focus on personalized therapies and strategic partnerships aims to address significant unmet needs in the oncology space, positioning it as an innovator in the biotechnology sector.

What Products and Services Does APTO Offer?

  • Discovers and develops personalized therapies for oncology.
  • Focuses on unmet medical needs in cancer treatment.
  • Conducts clinical trials for drug candidates targeting blood cancers.
  • Develops therapies for relapsed or refractory cancers.
  • Creates kinase inhibitor programs.
  • Pursues agreements with other companies for research and development.

How Does APTO Make Money?

  • Develops and patents novel oncology therapies.
  • Conducts clinical trials to demonstrate safety and efficacy.
  • Seeks regulatory approval for its drug candidates.
  • Potentially commercializes or partners to commercialize approved therapies.

What Industry Does APTO Operate In?

Aptose Biosciences operates within the competitive biotechnology industry, which is characterized by high R&D spending, lengthy development timelines, and stringent regulatory requirements. The oncology market, in particular, is a major area of focus, driven by the increasing prevalence of cancer and the demand for more effective and personalized treatments. The industry is marked by intense competition among both large pharmaceutical companies and smaller biotech firms, all vying to develop innovative therapies. Aptose's focus on personalized therapies and strategic partnerships aims to differentiate it within this landscape.

Who Are APTO's Key Customers?

  • Patients with relapsed or refractory blood cancers.
  • Oncologists and hematologists treating these patients.
  • Hospitals and cancer centers.
  • Potential pharmaceutical partners for licensing or acquisition.
AI Confidence: 71% Updated: May 31, 2026

Company Profile

Aptose Biosciences Inc. operates in the Biotechnology industry within the Healthcare sector. It is headquartered in Toronto, CA. The company is led by CEO William G. Rice. APTO has traded publicly since 1992.

F-Score 3/9Financial Health

Aptose Biosciences Inc.'s Piotroski F-Score is 3/9, a 9-point checklist of profitability, leverage and efficiency — flagging fundamental weakness worth scrutiny.

ROE -23%Key Financial Metrics

Return on equity for Aptose Biosciences Inc. stands at -23.2%, a gauge of how efficiently it converts shareholder capital into profit. Return on assets is 51.7%, showing how much profit it generates from its asset base. APTO trades at a trailing price-to-earnings ratio of 0.79, below the Healthcare sector average of ~23x. Its free cash flow yield is 0.0%, a gauge of the cash the business throws off relative to its market value. A current ratio of 0.55 means current liabilities exceed short-term assets, a liquidity point worth watching. Its earnings yield is 127.0%, the inverse of the P/E and a quick read on earnings relative to price.

APTO Valuation & Market Position

With a $4.36M market cap, Aptose Biosciences Inc. sits in the micro-cap segment of the market. Relative to its peer group, APTO's quantitative score of 49/100 is below the peer average of 88/100.

FY2026 estForward Outlook

Wall Street analysts project Aptose Biosciences Inc. revenue of about $38.9M for fiscal 2026, with EPS near $-5.65.

Net sellingInsider Activity

Over the past six months, Aptose Biosciences Inc. insiders filed 30 SEC Form 4 transactions — 30 sales and 0 purchases. On net that is roughly 2.8M shares disposed (about $6.4M), a signal worth weighing alongside the fundamentals.

APTO Financials

Fundamental Snapshot

Net Income Growth (FY)
+100.0%
EPS Growth (FY)
-81.7%
Free Cash Flow Growth (FY)
+100.0%
P/E (TTM)
0.8
Return on Equity (TTM)
-23.2%
Current Ratio
0.5
EV/EBITDA (TTM)
0.6

Based on FMP financials and quantitative analysis · FY 2025

Bull Case vs Bear Case

Bull Case

  • Recent insider buying suggests confidence in Aptose's future prospects, indicating that key stakeholders believe in the company's potential.
  • Community sentiment has leaned positive lately, with discussions highlighting the promising results from recent clinical trials.
  • The company's focus on innovative cancer therapies aligns with growing market demand for effective treatments, enhancing its appeal to investors.
  • Aptose's strategic partnerships with research institutions have garnered attention, positioning it well for future collaborations and advancements.

Bear Case

  • Concerns about the competitive landscape in the biotech sector have emerged, with many players vying for attention and funding.
  • Some community members express skepticism regarding the long timelines associated with drug development, which may deter short-term investors.
  • Recent market volatility has led to increased caution among investors, causing some to reassess their positions in biotech stocks like Aptose.
  • There are lingering doubts about the company's ability to secure necessary funding for ongoing research and development efforts, raising potential red flags.

AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · March 2026

APTO Latest News

APTO Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations from Benzinga, Yahoo Finance, and Finnhub for APTO.

Price Targets

Wall Street price target analysis for APTO.

APTO MoonshotScore

49/100

What does this score mean?

The MoonshotScore rates APTO's growth potential on a scale of 0-100 across multiple factors including innovation, market disruption, financial health, and momentum.

Leadership: William G. Rice

CEO

William G. Rice serves as the CEO of Aptose Biosciences Inc. His background includes extensive experience in the biotechnology and pharmaceutical industries. He has held leadership positions in various companies, focusing on drug development and commercialization. Rice's expertise spans from preclinical research to clinical development and regulatory affairs. His experience positions him to lead Aptose in its mission to develop personalized therapies for oncology.

Track Record: Under William G. Rice's leadership, Aptose Biosciences Inc. has focused on advancing its clinical programs, including luxeptinib and APTO-253, through clinical trials. He has overseen the company's strategic partnerships and efforts to secure funding for its research and development activities. Key milestones include initiating and progressing clinical trials for its lead drug candidates.

Common Questions About APTO (Healthcare)

What does Aptose Biosciences Inc. do?

Aptose Biosciences Inc. is a clinical-stage biotechnology company dedicated to discovering and developing personalized therapies for oncology, with a focus on addressing unmet medical needs in cancer treatment. The company's pipeline includes clinical programs such as luxeptinib and APTO-253, which are being developed for the treatment of relapsed or refractory blood cancers. Aptose aims to improve patient outcomes by developing novel therapies that target specific cancer pathways.

What do analysts say about APTO stock?

Analyst coverage of Aptose Biosciences Inc. typically reflects the high-risk, high-reward nature of clinical-stage biotechnology companies. Valuations are heavily dependent on the successful progression of its clinical programs, particularly luxeptinib and APTO-253. Analyst ratings and price targets can vary widely based on differing assessments of clinical trial data and the likelihood of regulatory approval. Investors should conduct their own due diligence and consider their risk tolerance before investing.

What are the main risks for APTO?

The primary risks for Aptose Biosciences Inc. include the potential for clinical trial failures, regulatory setbacks, and competition from other oncology therapies. As a clinical-stage company, Aptose is heavily reliant on the successful development and approval of its drug candidates. Failure to achieve positive clinical trial results or secure regulatory approval could significantly impact the company's value. Additionally, Aptose faces competition from larger pharmaceutical companies with more extensive resources and established oncology portfolios.

What are the key factors to evaluate for APTO?

Aptose Biosciences Inc. (APTO) holds an AI score of 49/100 (low). P/E: 0.8x vs the S&P 500's ~20-25x. Not financial advice.

How frequently does APTO data refresh on this page?

APTO prices update in real time during U.S. market hours. Fundamentals refresh after quarterly filings; analyst ratings and AI insights update daily; news is aggregated continuously.

What has driven APTO's recent stock price performance?

Aptose Biosciences Inc. (APTO) moves on earnings results, analyst revisions, sector rotation, and market sentiment. Notable catalyst: Pipeline of clinical-stage oncology assets. See the News tab for the latest drivers. Past performance does not predict future results.

Should investors consider APTO overvalued or undervalued right now?

Aptose Biosciences Inc. (APTO) trades at 0.8x earnings. Compare P/E, P/S, and EV/EBITDA against sector peers for a full view.

What research should beginners do before buying APTO?

Before investing in Aptose Biosciences Inc. (APTO), research these four areas: (1) the company's revenue model and competitive position (see Company Overview), (2) financial health through revenue growth, margins, and cash flow (see MoonshotScore), (3) what Wall Street analysts recommend and their price targets (see Analyst tab), and (4) specific risk factors that could impact the stock (see Risk Factors section).

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Official Resources

Price as of Analysis updated AI Score refreshed daily
Data Sources & Methodology
Market data powered by Financial Modeling Prep & Yahoo Finance. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .
Data Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.

Analysis Notes
  • Information is based on available data as of 2026-05-31.
  • Clinical trial outcomes are inherently uncertain.
  • Financial projections are subject to change.
Data Sources

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