Third Arc Bio vs ImmunoVec
Side-by-side comparison of AI visibility scores, market position, and capabilities
Raised $52M Series A extension (Feb 2026) from a16z as new investor — total $217M. ARC101 (bispecific T cell engager, CLDN6+) in Phase 1 solid tumors. Platform spans oncology and autoimmune.
About
Third Arc Bio raised a $52 million Series A extension in February 2026 with Andreessen Horowitz as a new investor, building on its prior $165 million Series A to reach $217 million in total financing. The company develops multifunctional antibodies — protein therapeutics that combine multiple mechanisms of action in a single molecule — with its lead program ARC101 being a bispecific T cell engager targeting CLDN6 in solid tumors, currently in Phase 1 clinical trials.
Received up to $40.7M ARPA-H award (Oct 2025). Polymeric nanoparticle platform to reprogram immune cells in vivo without viral vectors. Non-viral delivery for CAR-T-like therapies.
About
ImmunoVec is developing a non-viral polymeric nanoparticle delivery platform for in vivo immune cell engineering — programming a patient's immune cells directly inside their body without the expensive ex vivo manufacturing process that makes CAR-T therapies cost $500,000-$1,000,000 per treatment. The company received a selective ARPA-H (Advanced Research Projects Agency for Health) award of up to $40.7 million in October 2025 for development of its platform.
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