Tectonic Therapeutic, Inc. is a clinical-stage biotechnology company, which engages in the discovery and development of therapeutic proteins and antibodies that modulate the activity of G protein-coupled receptors (GPCR). It develops a proprietary technology platform called GEODe to enable the discovery and development of GPCR-targeted biologic medicines. The company was founded by Timothy A. Springer and Andrew Kruse in November 2015 and is headquartered in Watertown, MA.