Mosaic Biosciences is an end-to-end antibody discovery CRO built for programs that can't afford to guess. Based in Boulder, Colorado, we partner with pharma and biotech teams at every stage of discovery, from target selection and library screening to lead optimization and IND-enabling studies.

What sets Mosaic apart is our consultative model. We don't run programs on autopilot. Our scientific team works shoulder-to-shoulder with clients to make decisions that hold up downstream. That means integrating phage display, yeast display, and next-generation platforms like Atlas, our proprietary transgenic mouse system for fully human antibody discovery, into a single, coordinated workflow.

We recently launched Sort AI, a yeast display-based triage service that validates AI-generated antibody libraries before costly recombinant production. It's built for the reality that generative models are producing candidates faster than wet lab capacity can keep pace.
Mosaic clients get a partner that reduces program complexity, de-risks key decisions, and delivers decision-grade candidates on predictable timelines.