Theseus Pharmaceuticals, Inc. (THRX) Stock Analysis
DELISTED 2024
What happened to Theseus Pharmaceuticals, Inc. (THRX) stock?
Theseus Pharmaceuticals, Inc. (THRX) no longer trades on public markets. It was delisted in February 2024. The figures below are historical and are not a current quote.
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.
Theseus Pharmaceuticals, Inc. (THRX) trades at $4.07. Theseus Pharmaceuticals, Inc. is a biopharmaceutical company focused on developing targeted therapies for cancer patients. Market cap: $182M, Sector: Healthcare.
Last analyzed: Mar 18, 2026Analyst Coverage for THRX: THRX 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 THRX against Healthcare peers across nine fundamental dimensions and assigns a neutral fundamental signal based on the underlying data.
THRX: 1/2 scored disciplines lean bearish. Dominant signal: Seth Klarman bearish.
How is this calculated? →Theseus Pharmaceuticals, Inc. (THRX) Healthcare & Pipeline Overview
Theseus Pharmaceuticals, Inc. is a biopharmaceutical company specializing in targeted cancer therapies, particularly those addressing drug resistance mutations. Their pipeline includes THE-630, a pan-KIT inhibitor in Phase I trials, and a fourth-generation EGFR inhibitor, positioning them in the competitive oncology therapeutics market.
What Is the Investment Thesis for THRX?
Theseus Pharmaceuticals, Inc. presents a high-risk, high-reward investment opportunity within the biotechnology sector. The company's focus on overcoming drug resistance in cancer treatment addresses a critical unmet need. The Phase I clinical trial of THE-630 for GIST represents a near-term catalyst, with data readouts potentially driving significant stock movement. The development of a fourth-generation EGFR inhibitor targeting the C797S mutation in NSCLC offers a longer-term growth opportunity. However, the company's success hinges on positive clinical trial outcomes and the ability to secure regulatory approvals. With a market capitalization of $182M and a negative P/E ratio of -3.32, the company's valuation is highly dependent on its pipeline progress. A beta of 3.98 indicates high volatility, reflecting the inherent risks in biotechnology investments.
Based on FMP financials and quantitative analysis
THRX Key Highlights
Lead product candidate THE-630 is in Phase I clinical trials for gastrointestinal stromal tumors (GIST).
- Developing a fourth-generation EGFR inhibitor active against C797S mutation in non-small cell lung cancer (NSCLC).
- Focus on addressing drug resistance mutations in key driver oncogenes.
- Incorporated in 2017, indicating a relatively young company in the biotechnology space.
- Market capitalization of $182M reflects the company's current valuation and growth potential.
Who Are THRX's Competitors?
THRX is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.
| Company | Price | Change | Market Cap | AI Score |
|---|---|---|---|---|
| ATYR aTyr Pharma, Inc. | $0.50 | -5.59% | $49.3M | — |
| CRGX CARGO Therapeutics, Inc. Common Stock | $4.47 | +0.00% | $216M | 45 |
| FSTX F-star Therapeutics, Inc. | $7.12 | +0.00% | $157M | 65 |
| LENZ LENZ Therapeutics, Inc. | $4.66 | -5.28% | $146M | — |
| LSB LakeShore Biopharma Co., Ltd | $0.63 | +0.00% | $25.8M | 46 |
| ORMP Oramed Pharmaceuticals Inc. | $4.79 | +0.00% | $196M | 77 |
| CGEN Compugen Ltd. | $2.65 | +8.61% | $251M | 76 |
| NAGE Niagen Bioscience Inc | $3.15 | -0.63% | $251M | 74 |
AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance
What Are THRX's Key Strengths?
Focus on addressing drug resistance in cancer.
- Lead product candidate in Phase I clinical trials.
- Development of fourth-generation EGFR inhibitor.
- Experienced management team in drug development.
What Are THRX's Weaknesses?
Limited financial resources.
- Early-stage pipeline with high clinical trial risk.
- Dependence on successful clinical trial outcomes.
- Small number of employees (38).
What Could Drive THRX Stock Higher?
Data readout from Phase I clinical trial of THE-630 for GIST.
- Initiation of clinical trials for the fourth-generation EGFR inhibitor in NSCLC.
- Progress in research and development of new targeted therapies.
- Potential for strategic partnerships and collaborations.
What Are the Key Risks for THRX?
Negative return on equity (-20.7%) — 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 $7.6M recently.
- Clinical trial failures for THE-630 or the EGFR inhibitor.
- Regulatory delays or rejection of drug candidates.
- Competition from other pharmaceutical companies.
- Dependence on securing additional funding.
- Patent challenges and intellectual property disputes.
What Are the Growth Opportunities for THRX?
- THE-630 for Gastrointestinal Stromal Tumors (GIST): The successful completion of Phase I clinical trials for THE-630 and subsequent regulatory approval could unlock a significant market opportunity in GIST treatment. Positive clinical data demonstrating THE-630's efficacy and safety would be a major catalyst for Theseus.
- Fourth-Generation EGFR Inhibitor for NSCLC: The development of a fourth-generation EGFR inhibitor targeting the C797S mutation in NSCLC represents a substantial growth opportunity. NSCLC is a prevalent form of lung cancer, and the emergence of resistance mutations like C797S creates a demand for novel therapies. If successful, this program could capture a significant share of the NSCLC therapeutics market.
- Expansion of Pipeline: Theseus has the opportunity to expand its pipeline beyond THE-630 and the EGFR inhibitor program. By identifying and developing new targeted therapies for other cancer types or resistance mechanisms, the company can diversify its revenue streams and reduce its dependence on individual products. This expansion could involve internal research and development efforts or strategic collaborations with other companies.
- Strategic Partnerships and Collaborations: Partnering with larger pharmaceutical companies or research institutions can provide Theseus with access to additional funding, expertise, and resources. These collaborations can accelerate the development and commercialization of its products and expand its market reach. Strategic alliances can also help Theseus navigate the complex regulatory landscape and gain access to new technologies.
- Geographic Expansion: Initially focused on the US market, Theseus has the potential to expand its commercial operations to other regions, such as Europe and Asia. These regions represent significant growth opportunities for cancer therapeutics, driven by increasing healthcare spending and aging populations. Successful expansion into these markets would require establishing local partnerships, navigating regulatory requirements, and adapting its marketing strategies to local needs.
What Are THRX's Competitive Advantages?
- Proprietary technology for developing targeted therapies.
- Strong intellectual property protection for its drug candidates.
- Expertise in addressing drug resistance mutations in cancer.
- Potential for first-in-class or best-in-class therapies.
What Does THRX Do?
Theseus Pharmaceuticals, Inc., founded in 2017 and based in Cambridge, Massachusetts, is a biopharmaceutical company dedicated to the discovery, development, and commercialization of targeted therapies for cancer patients. The company's primary focus is on addressing drug resistance mutations in key driver oncogenes, which are mutated genes that cause cancer. Their lead product candidate, THE-630, is a pan-KIT inhibitor currently in Phase I clinical trials for the treatment of gastrointestinal stromal tumors (GIST). GIST is a type of cancer that originates in the specialized nerve cells found in the walls of the digestive tract. Theseus is also developing a fourth-generation EGFR inhibitor designed to be active against C797S, an EGFR mutation that confers resistance to first- or later-line osimertinib treatment in patients with non-small cell lung cancer (NSCLC). NSCLC is one of the most common types of lung cancer. By targeting these resistance mutations, Theseus aims to provide more effective treatment options for cancer patients who have exhausted other therapies. The company's approach involves creating highly selective inhibitors that can overcome the limitations of existing drugs, potentially improving patient outcomes and extending survival.
What Products and Services Does THRX Offer?
- Develop targeted therapies for cancer patients.
- Focus on addressing drug resistance mutations in key driver oncogenes.
- Advance THE-630, a pan-KIT inhibitor, through clinical trials for GIST.
- Create fourth-generation EGFR inhibitors to combat resistance in NSCLC.
- Engage in research and development to discover novel cancer treatments.
- Seek regulatory approvals for its therapeutic candidates.
How Does THRX Make Money?
- Research and development of novel cancer therapeutics.
- Clinical trials to evaluate the safety and efficacy of drug candidates.
- Seeking regulatory approval from agencies like the FDA.
- Commercialization of approved therapies through sales and marketing.
What Industry Does THRX Operate In?
Theseus Pharmaceuticals operates within the competitive biotechnology industry, which is characterized by high R&D spending, lengthy development timelines, and significant regulatory hurdles. The oncology therapeutics market is experiencing rapid growth, driven by an aging population and increasing cancer incidence. A key trend is the development of targeted therapies that address specific genetic mutations driving cancer growth. Theseus' focus on overcoming drug resistance positions it within this growing segment. Competitors include companies like ATYR, CRGX, FSTX, LENZ, and LSB, all vying for market share in the development of novel cancer treatments.
Who Are THRX's Key Customers?
- Cancer patients suffering from gastrointestinal stromal tumors (GIST).
- Patients with non-small cell lung cancer (NSCLC) who have developed resistance to existing EGFR inhibitors.
- Oncologists and other healthcare professionals who treat cancer patients.
- Hospitals and cancer centers that provide cancer care.
Company Profile
Theseus Pharmaceuticals, Inc. operates in the Biotechnology industry within the Healthcare sector. It is headquartered in Cambridge, US. The company is led by CEO Iain D. Dukes DPHIL,. THRX has traded publicly since 2021.
Financial Health
Theseus Pharmaceuticals, Inc.'s Piotroski F-Score is 3/9, a 9-point checklist of profitability, leverage and efficiency — flagging fundamental weakness worth scrutiny. Its Altman Z-Score of 10.00 places it in the safe zone, indicating low near-term bankruptcy risk.
Key Financial Metrics
Return on equity for Theseus Pharmaceuticals, Inc. stands at -20.7%, a gauge of how efficiently it converts shareholder capital into profit. Return on assets is -21.2%, showing how much profit it generates from its asset base. Its free cash flow yield is -18.4%, a gauge of the cash the business throws off relative to its market value. A current ratio of 17.79 indicates the company holds enough short-term assets to cover its near-term obligations. Its earnings yield is -30.1%, the inverse of the P/E and a quick read on earnings relative to price.
THRX Valuation & Market Position
With a $182M market cap, Theseus Pharmaceuticals, Inc. sits in the micro-cap segment of the market.
Insider Activity
The most recent 12 insider filings for Theseus Pharmaceuticals, Inc. break down as 12 sales and 0 purchases. On net that is roughly 2.2M shares disposed (about $7.6M), a signal worth weighing alongside the fundamentals.
THRX Financials
Fundamental Snapshot
Based on FMP financials and quantitative analysis
Bull Case vs Bear Case
Bull Case
- Focus on addressing drug resistance in cancer.
- Lead product candidate in Phase I clinical trials.
- Development of fourth-generation EGFR inhibitor.
- Experienced management team in drug development.
Bear Case
- Limited financial resources.
- Early-stage pipeline with high clinical trial risk.
- Dependence on successful clinical trial outcomes.
- Small number of employees (38).
AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · August 2026
THRX Latest News
No recent news available for THRX.
Leadership: Iain D. Dukes DPHIL,
Chief Executive Officer
Iain D. Dukes holds a DPHIL. He has extensive experience in the pharmaceutical and biotechnology industries. His background includes leadership roles at various companies, where he has been involved in drug discovery, development, and commercialization. He has a proven track record of building and leading successful teams and driving innovation in the healthcare sector. His expertise spans multiple therapeutic areas, including oncology, immunology, and neurology. He has also been involved in numerous strategic transactions, including mergers, acquisitions, and licensing agreements.
Track Record: Under Iain D. Dukes' leadership, Theseus Pharmaceuticals has focused on developing targeted therapies for cancer patients, with a particular emphasis on overcoming drug resistance. He has overseen the advancement of THE-630 into Phase I clinical trials and the development of the fourth-generation EGFR inhibitor. His strategic decisions have positioned the company to address critical unmet needs in cancer treatment.
THRX Healthcare Stock FAQ
What happened to Theseus Pharmaceuticals, Inc. (THRX) stock?
Theseus Pharmaceuticals, Inc. (THRX) no longer trades on public markets. It was delisted in February 2024. The figures below are historical and are not a current quote.
Can I still buy THRX shares?
No. THRX stopped trading on public markets in February 2024, so the shares are not available through a broker. Anything you see quoted for THRX elsewhere is historical data, not a live market.
Are the figures on this page current?
No. Every number here is the last value recorded before THRX stopped trading. Nothing on this page updates, and none of it is a current quote.
Why does this page still exist?
Because people still search for what happened to Theseus Pharmaceuticals, Inc.. An archived profile that states the delisting plainly is more useful than a dead link — provided it is labelled as history, which is what this page does.
What does Theseus Pharmaceuticals, Inc. do?
Theseus Pharmaceuticals, Inc. is a biopharmaceutical company focused on developing targeted therapies for cancer patients, particularly those who have developed resistance to existing treatments. The company's lead product candidate, THE-630, is a pan-KIT inhibitor currently in Phase I clinical trials for gastrointestinal stromal tumors (GIST).
What do analysts say about THRX stock?
Analyst coverage of Theseus Pharmaceuticals, Inc. is still developing, given its relatively early stage as a publicly traded company. Key valuation metrics to watch include the progress of THE-630 through clinical trials and the potential market size for its EGFR inhibitor. Growth considerations center on the company's ability to secure regulatory approvals and successfully commercialize its products.
What are the main risks for THRX?
The primary risks for Theseus Pharmaceuticals, Inc. include the potential for clinical trial failures, regulatory delays, and competition from established pharmaceutical companies. As a biotechnology company with a limited number of employees (38), Theseus is heavily reliant on the success of its lead product candidates.
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 publicly available sources and may be subject to change.
- AI analysis pending may provide additional insights in the future.