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Boundless Bio

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Discovering and developing novel cancer therapeutics based on the role of extrachromosomal DNA (ecDNA) in driving tumorigenesis, resistance and recurrence

San Diego, United StatesFounded 2018Biotech & Life Sciences
Valuation $25–50M Last recorded · 2026
Headcount <100 Current team size
Total funding $100–500M Disclosed equity funding
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About Boundless Bio

Boundless Bio is a pioneering biotechnology startup that operates in the oncology sector. The company's primary focus is on developing innovative cancer treatments for patients with oncogene amplified cancers, a type of cancer that currently lacks effective treatment options. Oncogene amplified cancers are characterized by gene amplifications, which are present in nearly 25% of all cancers and more than 400,000 new cancer cases in the US each year.

The company's groundbreaking research revolves around extrachromosomal DNA (ecDNA), a key enabling mechanism in cancer cells. ecDNA is rarely found in healthy cells but is present in almost half of all solid tumor cancers. Boundless Bio is exploiting this unique vulnerability in cancer cells to develop a new wave of cancer medicines, known as ecDNA-directed therapies (ecDTx).

Boundless Bio's business model is centered on the research, development, and commercialization of these novel cancer treatments. The company aims to generate revenue through the successful development and sale of these therapies, filling a significant gap in the market for effective treatments for oncogene amplified cancers.

Boundless Bio is the only company dedicated to treating oncogene amplified cancers and is a leader in the emerging field of ecDNA. The company's team of professional drug hunters is committed to developing powerful new cancer medicines that eliminate cancer cells' ability to use ecDNA to survive.

Source: Dealroom company data

At a glance

Founded
2018
Headquarters
San Diego, United States
Sector
Biotech & Life Sciences

Investors

18 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A14 investors entered at this stage

Series B and later4 investors entered at this stage

  • Piper Heartland Healthcare Capital
  • Sectoral Asset Management
  • Vertex Ventures HC
  • Leaps by Bayer
Team profiled 12 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 5 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

Market sentiment

Posts on X, past 7 days

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