Infinimmune

Human-derived antibody medicines

South San Francisco, United States · $87.0M raised

Business Model
B2B
Total Funding
$87.0M
Last Round
$75.0M Series AAug 2026
Rounds
2

About

Infinimmune systematically surfaces and engineers the rare antibodies evolution has already proven in people and advances them into the clinic. The company holds the world's largest database of millions of paired heavy- and light-chain antibody sequences, sourced from a continuous pipeline of diverse healthy and diseased human donors. Using its Complete Human sequencing technology and Anthrobody library-on-B-cell platform, Infinimmune discovers fully paired, antigen-specific antibody sequences from up to 300 million B cells across 350+ targets, and applies its GLIMPSE antibody language model to optimize affinity, potency, and developability in as little as eight weeks.

Summary

Infinimmune is a Biotech company based in South San Francisco, United States. It has raised $87.0M in total across 2 rounds, most recently a $75.0M Series A round in Aug 2026. Investors include Playground Global, Regeneron Pharmaceuticals and Axial Partners.

Tech & App Stack

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Funding History

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Series ASeries AAug 2026
$75.0M

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Seed through Series A — per-round amounts, valuations, and who invested in each round.

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