Poseida Therapeutics
Updated: November 28, 2025
Founder Eric Ostertag
Country: USA | Funding: $460.5M (+)
Website: https://poseida.com/
Poseida Therapeutics develops differentiated allogeneic cell therapies and genetic medicines using our proprietary genetic engineering platforms. The company develops the piggyBac non-viral DNA delivery system (which enables introduction of large genetic data into the genome) and the Cas-CLOVER site-specific gene editing system (which can be used for precise site-specific deletions, insertions and knockouts in various cell types). Using this platform, the company creates CAR-T therapies with high levels of desired TSCM (stem cell-derived memory T cells) for the treatment of a range of oncological, autoimmune and rare diseases, including multiple myeloma, acute myeloid leukemia and prostate cancer. Poseida was acquired by Roche in early 2025.
Website: https://poseida.com/
Poseida Therapeutics develops differentiated allogeneic cell therapies and genetic medicines using our proprietary genetic engineering platforms. The company develops the piggyBac non-viral DNA delivery system (which enables introduction of large genetic data into the genome) and the Cas-CLOVER site-specific gene editing system (which can be used for precise site-specific deletions, insertions and knockouts in various cell types). Using this platform, the company creates CAR-T therapies with high levels of desired TSCM (stem cell-derived memory T cells) for the treatment of a range of oncological, autoimmune and rare diseases, including multiple myeloma, acute myeloid leukemia and prostate cancer. Poseida was acquired by Roche in early 2025.
