Circle Pharma
Circle Pharma is a biotech company in United States, founded in 2012. It has raised $227.5M across 3 rounds, most recently a $92.5M Series E in September 2026.
Drugging the undruggable.
- Employees
- 51–200
- Founded
- 2012
- Business Model
- B2B
- Website
- circlepharma.com
- Total Funding
- $227.5M
- Last Round
- $92.5M Series ESep 2026
- Rounds
- 3
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 3 funding rounds and 3 investors for this company. The full record is or through the API.
About
Circle Pharma is harnessing the power of macrocycles to transform the treatment of cancer and other serious illnesses. The proprietary MXMO platform was designed to create macrocycles that can reach targets that conventional medications cannot. Circle's mission is to harness the power of macrocycle therapies to create effective treatments for cancer while minimizing the negative effects patients experience with conventional therapies. The highly selective nature of macrocycles gives them the potential to transcend the entire cancer therapy experience, including more comfort and fewer side effects during and after treatment.
Summary
It lists 51–200 employees. It has raised $227.5M in total across 3 rounds, most recently a $92.5M Series E round in Sep 2026. Investors include The Column Group, Nextech Invest and Euclidean Capital.
Tech & App Stack
3 technologies & apps tracked
Every product and vendor across these categories, with where each signal came from.
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Funding History
Sep 2026
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Funding: Series B through Series E. Amounts, valuations, and investors where available.
Investors
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