Atossa Therapeutics, Inc. (ATOS)
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.
Atossa Therapeutics, Inc. (ATOS) trades at $2.33 with AI Score 29/100 (Grade F). Atossa Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on developing medicines for unmet needs in oncology, particularly breast cancer. Market cap: $20.02M, Sector: Healthcare.
Price live · AI analysis from May 9, 2026ATOS stock analysis for 2026: Analysts have set a consensus price target of $10.00 for Atossa Therapeutics, Inc., suggesting 330.1% upside from the current price of $2.33. The AI MoonshotScore is 29/100, indicating a bearish outlook. Key factors: analyst coverage, AI-driven quantitative scoring.
ATOS: 1/1 perspectives are bearish.
How is this calculated? →Atossa Therapeutics, Inc. (ATOS) Healthcare & Pipeline Overview
Atossa Therapeutics, Inc. is a clinical-stage biopharmaceutical company specializing in oncology, with a focus on breast cancer treatments. Their lead drug candidate, oral (Z)-endoxifen, targets unmet medical needs in breast cancer prevention and treatment, positioning them within a competitive biotechnology landscape.
What Is the Investment Thesis for ATOS?
Atossa Therapeutics presents a focused investment opportunity within the biotechnology sector, primarily driven by the potential of its lead drug candidate, oral (Z)-endoxifen. Currently in Phase II clinical trials, positive results could significantly increase the company's valuation. The company's focus on breast cancer, a prevalent and well-funded area of oncology, provides a clear market opportunity. However, the company's market capitalization of $20.02M reflects the inherent risks associated with clinical-stage biopharmaceutical companies, including the potential for trial failures and regulatory hurdles. The company's success hinges on the clinical trial outcomes and subsequent regulatory approvals for (Z)-endoxifen, as well as the progress of its immunotherapy programs. Investors should closely monitor clinical trial data releases and regulatory updates to assess the viability of Atossa's pipeline and its long-term growth potential.
Based on FMP financials and quantitative analysis
ATOS Key Highlights
- Atossa Therapeutics is a clinical-stage biopharmaceutical company focused on oncology, specifically breast cancer.
- The company's lead drug candidate, oral (Z)-endoxifen, is in Phase II clinical trials for breast cancer treatment and prevention.
- Atossa is also developing immunotherapy/chimeric antigen receptor therapy programs to broaden its oncology pipeline.
- The company changed its name from Atossa Genetics Inc. to Atossa Therapeutics, Inc. in January 2020.
- Atossa Therapeutics has a market capitalization of $20.02M and a beta of 1.49.
Who Are ATOS's Competitors?
ATOS is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.
| Company | Price | Change | Market Cap | AI Score |
|---|---|---|---|---|
| GILD Gilead Sciences, Inc. | $129.03 | -1.70% | $160.20B | 94 |
| MRK Merck & Co., Inc. | $126.78 | -2.15% | $313.12B | 83 |
| PFE Pfizer Inc. | $23.73 | -2.43% | $135.25B | 64 |
| SNDX Syndax Pharmaceuticals, Inc. | $22.11 | +1.33% | $1.96B | 79 |
| ANAB AnaptysBio, Inc. | $63.69 | +0.43% | $2.75B | 79 |
| CGEN Compugen Ltd. | $2.37 | +3.73% | $223.62M | 76 |
| ABCL AbCellera Biologics Inc. | $7.87 | -2.96% | $2.40B | 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 ATOS's Key Strengths?
- Focused on a specific area of unmet medical need in oncology (breast cancer).
- Lead drug candidate (Z)-endoxifen in Phase II clinical trials.
- Developing immunotherapy/CAR therapy programs to broaden pipeline.
- Experienced management team with expertise in drug development.
What Are ATOS's Weaknesses?
- Clinical-stage company with no approved products and no revenue.
- High dependence on the success of (Z)-endoxifen.
- Limited financial resources compared to larger pharmaceutical companies.
- Small number of employees.
What Could Drive ATOS Stock Higher?
- Release of Phase II clinical trial data for oral (Z)-endoxifen.
- Initiation of new clinical trials for immunotherapy/CAR therapy programs.
- Regulatory interactions with the FDA regarding (Z)-endoxifen.
- Progress in securing strategic partnerships and collaborations.
What Are the Key Risks for ATOS?
- Financial-distress signal — its Altman Z-Score of -10.33 sits in the distress zone (elevated bankruptcy risk).
- Negative return on equity (-84.9%) — the business is not currently generating profit on shareholder capital.
- Weak fundamentals — a Piotroski F-Score of 1/9 flags soft profitability, leverage or efficiency.
- Failure of Phase II clinical trials for oral (Z)-endoxifen.
- Delays or rejection of regulatory approval for (Z)-endoxifen.
- Competition from other companies developing breast cancer therapies.
- Dependence on securing additional funding for research and development.
- Patent challenges to Atossa's intellectual property.
What Are the Growth Opportunities for ATOS?
- Successful Completion of Phase II Clinical Trials for (Z)-endoxifen: The primary growth opportunity for Atossa lies in the successful completion of its Phase II clinical trials for oral (Z)-endoxifen. Positive results would validate the drug's efficacy and safety, potentially leading to accelerated regulatory approval and commercialization. The breast cancer treatment market is substantial, with a global market size estimated at billions of dollars annually. A successful trial outcome could position Atossa to capture a significant share of this market, driving substantial revenue growth. The timeline for this growth is dependent on the trial's progression and subsequent regulatory review.
- Expansion of Immunotherapy/CAR Therapy Programs: Atossa's development of immunotherapy and chimeric antigen receptor (CAR) therapy programs represents another significant growth opportunity. These programs target a broader range of oncology indications, diversifying the company's pipeline and reducing its reliance on (Z)-endoxifen. The immunotherapy market is experiencing rapid growth, driven by the success of checkpoint inhibitors and other novel immunotherapies. By expanding its presence in this space, Atossa can tap into a growing market and potentially develop breakthrough treatments for various cancers. The timeline for this growth depends on the progress of preclinical and clinical development of these programs.
- Strategic Partnerships and Collaborations: Atossa can pursue strategic partnerships and collaborations with larger pharmaceutical companies or other biotech firms to accelerate the development and commercialization of its drug candidates. These partnerships can provide access to funding, expertise, and resources that Atossa may lack independently. Collaborations can also facilitate the expansion of Atossa's pipeline and market reach. The oncology market is characterized by numerous collaborations between companies, reflecting the complexity and cost of drug development. By forging strategic alliances, Atossa can enhance its competitiveness and increase its chances of success.
- Out-Licensing or Acquisition of (Z)-endoxifen: If Phase II clinical trials are successful, Atossa could pursue an out-licensing agreement with a larger pharmaceutical company to commercialize (Z)-endoxifen. This would provide Atossa with upfront payments, milestone payments, and royalties on future sales, generating significant revenue without the need for Atossa to build its own commercial infrastructure. Alternatively, Atossa could be acquired by a larger company seeking to add (Z)-endoxifen to its oncology portfolio. The timeline for this growth is dependent on the clinical trial outcomes and the interest of potential partners or acquirers.
- Expansion into International Markets: While Atossa currently focuses on the United States market, expanding into international markets represents a long-term growth opportunity. Breast cancer is a global health issue, and there is significant demand for improved treatments in many countries. By seeking regulatory approval and commercializing its drugs in international markets, Atossa can significantly increase its revenue potential. The timeline for this growth depends on the company's ability to navigate international regulatory requirements and establish distribution networks in foreign markets.
What Opportunities Does ATOS Have?
- Successful completion of Phase II clinical trials for (Z)-endoxifen.
- Expansion of immunotherapy/CAR therapy programs.
- Strategic partnerships and collaborations with larger companies.
- Out-licensing or acquisition of (Z)-endoxifen.
What Threats Does ATOS Face?
- Clinical trial failures.
- Regulatory hurdles and delays.
- Competition from other companies developing breast cancer therapies.
- Patent expiration and generic competition.
What Are ATOS's Competitive Advantages?
- Patented drug candidates, providing exclusivity and protection from competition.
- Clinical trial data demonstrating the efficacy and safety of its drugs.
- Expertise in oncology drug development and regulatory affairs.
- Established relationships with key opinion leaders in the oncology field.
What Does ATOS Do?
Atossa Therapeutics, Inc., founded in 2008 and based in Seattle, Washington, is a clinical-stage biopharmaceutical company dedicated to developing innovative medicines for oncology, with a primary focus on breast cancer. The company's origins lie in addressing unmet medical needs in women's health, evolving from Atossa Genetics Inc. to Atossa Therapeutics, Inc. in January 2020 to reflect its broader therapeutic focus. Their lead drug candidate, oral (Z)-endoxifen, an active metabolite of tamoxifen, is currently undergoing Phase II clinical trials for both the treatment and prevention of breast cancer. This drug aims to improve upon existing treatments by offering a potentially more effective and tolerable option. In addition to (Z)-endoxifen, Atossa is also engaged in developing immunotherapy and chimeric antigen receptor (CAR) therapy programs, expanding its pipeline to address a wider range of oncology indications. The company operates primarily in the United States, targeting the significant market for breast cancer therapies. Atossa's strategy involves rigorous clinical trials and a commitment to advancing scientific understanding in oncology to bring novel treatments to patients.
What Products and Services Does ATOS Offer?
- Develop medicines for unmet medical needs in oncology, particularly breast cancer.
- Focus on women's health and oncology.
- Develop oral (Z)-endoxifen, an active metabolite of tamoxifen, for breast cancer treatment and prevention.
- Conduct Phase II clinical trials to evaluate the efficacy and safety of (Z)-endoxifen.
- Develop immunotherapy and chimeric antigen receptor (CAR) therapy programs.
- Seek regulatory approval for its drug candidates from the FDA and other regulatory agencies.
How Does ATOS Make Money?
- Develop and commercialize pharmaceutical products for oncology.
- Generate revenue through the sale of approved drugs.
- Out-license or partner with other companies for drug development and commercialization.
- Secure funding through venture capital, grants, and public offerings.
What Industry Does ATOS Operate In?
Atossa Therapeutics operates within the biotechnology industry, a sector characterized by high risk and high reward. The company focuses on oncology, specifically breast cancer, which remains a significant area of unmet medical need despite advancements in treatment. The competitive landscape includes major pharmaceutical companies and smaller biotech firms, all vying for market share in the oncology space. The biotechnology industry is driven by innovation, with companies like Atossa seeking to develop novel therapies that offer improved efficacy and safety profiles compared to existing treatments. The success of companies in this sector depends heavily on clinical trial outcomes, regulatory approvals, and the ability to secure funding for research and development.
Who Are ATOS's Key Customers?
- Patients with breast cancer.
- Healthcare providers who prescribe and administer cancer treatments.
- Hospitals and clinics that provide cancer care.
- Pharmaceutical companies that may partner with Atossa for drug development and commercialization.
Net buyingInsider Activity
Over the past six months, Atossa Therapeutics, Inc. insiders filed 11 SEC Form 4 transactions — 0 sales and 11 purchases. On net that is roughly 1.8M shares acquired (about $573K) — insiders putting money in tends to read as conviction.
ATOS Valuation & Market Position
With a $20.02M market cap, Atossa Therapeutics, Inc. sits in the micro-cap segment of the market. Relative to its peer group, ATOS's quantitative score of 29/100 is below the peer average of 80/100.
ROE -85%Key Financial Metrics
Return on equity for Atossa Therapeutics, Inc. stands at -84.9%, a gauge of how efficiently it converts shareholder capital into profit. Return on assets is -99.2%, showing how much profit it generates from its asset base. Its free cash flow yield is -85.2%, a gauge of the cash the business throws off relative to its market value. A current ratio of 4.92 indicates the company holds enough short-term assets to cover its near-term obligations. Its earnings yield is -95.9%, the inverse of the P/E and a quick read on earnings relative to price.
F-Score 1/9Financial Health
Atossa Therapeutics, Inc.'s Piotroski F-Score is 1/9, a 9-point checklist of profitability, leverage and efficiency — flagging fundamental weakness worth scrutiny. Its Altman Z-Score of -10.33 places it in the distress zone, a signal of elevated financial risk.
FY2026 estForward Outlook
Wall Street analysts project Atossa Therapeutics, Inc. revenue of about $54.5M for fiscal 2026, with EPS near $-4.33. The estimate reflects 3 contributing analysts.
Company Profile
Atossa Therapeutics, Inc. operates in the Biotechnology industry within the Healthcare sector. It is headquartered in Seattle, US. The company is led by CEO Steven C. Quay. ATOS has traded publicly since 2012.
ATOS Financials
Fundamental Snapshot
Based on FMP financials and quantitative analysis · FY 2025
Bull Case vs Bear Case
Bull Case
- Atossa has recently seen increased insider buying, indicating confidence from management in the company's potential growth.
- Social sentiment around Atossa has shifted positively, with discussions highlighting recent advancements in its clinical trials.
- The company's focus on innovative treatments for breast cancer is resonating well within the healthcare community, boosting investor interest.
- Recent partnerships and collaborations have strengthened Atossa's market position, enhancing its credibility among investors.
Bear Case
- Despite the positive sentiment, some analysts express concerns over Atossa's long-term financial sustainability given its reliance on funding.
- Community discussions reveal skepticism about the timelines for clinical trial results, which could impact investor confidence.
- There are ongoing regulatory challenges that may hinder Atossa's progress, creating uncertainty in the market perception.
- Recent volatility in biotech stocks has led to cautious sentiment, with some investors wary of potential downturns in the sector.
AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · February 2026
ATOS Latest News
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Atossa Therapeutics Announces Closing of Registered Direct Offering of up to $16.5 Million in Gross Proceeds
prnewswire.com · Jun 12, 2026
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Top Midday Decliners
Yahoo! Finance: ATOS News · Jun 11, 2026
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12 Health Care Stocks Moving In Thursday's Intraday Session
benzinga · Jun 11, 2026
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Crude Oil Edges Higher; Driven Brands Posts Upbeat Earnings
benzinga · Jun 11, 2026
ATOS Analyst Consensus
Consensus Rating
Aggregated Buy/Hold/Sell recommendations from Benzinga, Yahoo Finance, and Finnhub for ATOS.
Price Targets
Consensus target: $10.00
ATOS MoonshotScore
What does this score mean?
The MoonshotScore rates ATOS's growth potential on a scale of 0-100 across multiple factors including innovation, market disruption, financial health, and momentum.
Latest News
Atossa Therapeutics Announces Closing of Registered Direct Offering of up to $16.5 Million in Gross Proceeds
Top Midday Decliners
12 Health Care Stocks Moving In Thursday's Intraday Session
Crude Oil Edges Higher; Driven Brands Posts Upbeat Earnings
Latest Atossa Therapeutics, Inc. Analysis
Leadership: Steven C. Quay
CEO
Steven C. Quay is a physician and scientist with extensive experience in biotechnology and drug development. He holds a Ph.D. in biochemistry from the University of California, Berkeley, and an M.D. from the University of Michigan. Dr. Quay has founded multiple biotechnology companies and has held leadership positions in various pharmaceutical and biotech organizations. His expertise spans drug discovery, clinical development, and regulatory affairs. He has authored numerous scientific publications and holds multiple patents.
Track Record: Under Dr. Quay's leadership, Atossa Therapeutics has focused on advancing its lead drug candidate, (Z)-endoxifen, through clinical trials. He has overseen the company's transition to a clinical-stage biopharmaceutical company and has guided the development of its immunotherapy programs. Dr. Quay has also been instrumental in securing funding for the company's research and development activities. He manages 15 employees.
What Investors Ask About Atossa Therapeutics, Inc. (ATOS) — Healthcare
What does Atossa Therapeutics, Inc. do?
Atossa Therapeutics, Inc. is a clinical-stage biopharmaceutical company dedicated to developing medicines for unmet medical needs in oncology, with a primary focus on breast cancer. The company's lead drug candidate, oral (Z)-endoxifen, is currently in Phase II clinical trials for both the treatment and prevention of breast cancer. In addition to (Z)-endoxifen, Atossa is also engaged in developing immunotherapy and chimeric antigen receptor (CAR) therapy programs, expanding its pipeline to address a wider range of oncology indications. Atossa aims to improve patient outcomes by developing more effective and tolerable cancer therapies.
What do analysts say about ATOS stock?
As of May 9, 2026, analyst coverage of Atossa Therapeutics (ATOS) is limited, reflecting its status as a small-cap, clinical-stage biopharmaceutical company. Analyst ratings and price targets may vary depending on individual firm's research and risk assessments. Key valuation metrics to consider include the company's market capitalization, cash runway, and potential revenue from its lead drug candidate, (Z)-endoxifen, if approved. Growth considerations revolve around the successful completion of clinical trials, regulatory approvals, and potential partnerships. Investors should consult multiple sources of analyst research and conduct their own due diligence before making investment decisions.
What are the main risks for ATOS?
Atossa Therapeutics faces several key risks inherent to its business model and industry. Clinical trial risk is paramount, as the failure of its Phase II trials for (Z)-endoxifen would significantly impact the company's valuation and future prospects. Regulatory risk is also significant, as the FDA or other regulatory agencies may not approve (Z)-endoxifen or other drug candidates. Competition from larger pharmaceutical companies with greater resources and established products poses an ongoing threat. Financial risk is present due to the company's reliance on securing additional funding for research and development. Intellectual property risk exists, as Atossa's patents could be challenged or invalidated.
What are the key factors to evaluate for ATOS?
Atossa Therapeutics, Inc. (ATOS) holds an AI score of 29/100 (low). Analysts target $10.00 (+330%). Not financial advice.
How frequently does ATOS data refresh on this page?
ATOS 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 ATOS's recent stock price performance?
Atossa Therapeutics, Inc. (ATOS) moves on earnings results, analyst revisions, sector rotation, and market sentiment. Notable catalyst: Focused on a specific area of unmet medical need in oncology (breast cancer). See the News tab for the latest drivers. Past performance does not predict future results.
Should investors consider ATOS overvalued or undervalued right now?
Valuing Atossa Therapeutics, Inc. (ATOS) requires multiple metrics. Analysts target $10.00 (+330%) — upside seen. Compare P/E, P/S, and EV/EBITDA against sector peers for a full view.
What research should beginners do before buying ATOS?
Before investing in Atossa Therapeutics, Inc. (ATOS), 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
Data provided for informational purposes only.
- Information is based on available data as of May 9, 2026.
- Clinical trial outcomes are inherently uncertain and may differ from expectations.
- Analyst ratings and price targets are subject to change and should not be considered investment advice.