Third Arc Bio
Powering Superior Immune Synapses
Spring House, United States · Founded 2022 · $217.0M raised
- Headquarters
- Spring House, Pennsylvania
- Founded
- 2022
- Business Model
- B2B
- Website
- thirdarcbio.com
- Total Funding
- $217.0M
- Last Round
- $52.0M Extension RoundFeb 2026
- Rounds
- 2
About
Third Arc Bio is a biopharmaceutical company advancing antibody technology by harnessing the biology of immune synapses to address solid tumors and autoimmune diseases. The company is developing next-generation immunotherapies targeting indications with significant unmet need.
Summary
Third Arc Bio is a Biotech company based in Spring House, United States, founded in 2022. It has raised $217.0M in total across 2 rounds, most recently a $52.0M Extension Round round in Feb 2026. Investors include Andreessen Horowitz.
Tech & App Stack
3 technologies & apps tracked
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Funding History
Feb 2026
Sign up to see all 2 rounds
Series A through Extension Round — per-round amounts, valuations, and who invested in each round.
Investors
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