Third Arc Bio
Latest round
- Series A
Last raised
- Feb 2026
Total raised
- $125M
Investors
- 16
About Third Arc Bio
Based in Pennsylvania, US, and founded in 2021 by Sanjaya Singh, Third Arc Bio, Inc. is a biotech company that focuses on developing multifunctional antibodies that are optimized for best-in-class T cell engagement across solid tumors and inflammatory and immunology diseases. In February 2026, Third Arc Bio, Inc. As of 2026 the company is headed by its CEO Peter F. Lebowitz. Third Arc Bio specializes in the development of multifunctional antibodies designed to create immune synapses that precisely activate or inhibit T cells. The company's therapies are targeted at treating solid tumors and inflammatory and immunological (I&I) diseases. Through its expertise in immunology and antibody engineering, Third Arc Bio aims to advance next-generation biologic treatments that could redefine the standard of care in these therapeutic areas. The company’s solutions are focused on enhancing the immune response to treat complex diseases by optimizing T cell activity, offering a potential breakthrough in the treatment of challenging conditions.
Who invested in Third Arc Bio
16 investors across 3 rounds
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Questions about Third Arc Bio
Who invested in Third Arc Bio?
Third Arc Bio has 16 investors on record across 3 venture rounds. Sign up free to see every VC on the cap table and the rounds they joined.
How much funding has Third Arc Bio raised?
Third Arc Bio has raised 3 venture rounds. Sign up free to see how much each round raised and the total.
When did Third Arc Bio last raise money?
Third Arc Bio's most recent round on record is a Series A, in Feb 2026.
What does Third Arc Bio do?
Based in Pennsylvania, US, and founded in 2021 by Sanjaya Singh, Third Arc Bio, Inc.
Where is Third Arc Bio headquartered?
Third Arc Bio is headquartered in Boston, US.
Which VCs invest in companies like Third Arc Bio?
Among active investors with capital left to deploy, Andreessen Horowitz, Founders Fund, Accel and Thrive Capital back biotechnology companies at Third Arc Bio's stage. Their profiles are linked below.
VCs backing biotechnology startups at Series A
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