Obsidian Therapeutics
Updated: January 19, 2026
Paul Wotton, CEO
Country: USA | Funding: $325M (+)
Founded: 2015
Website: https://obsidiantx.com/
Obsidian Therapeutics develops precision cell and gene therapies to expand the capabilities of adoptive cancer immunotherapy. The company has developed the cytoDRiVE platform, which leverages drug-responsive domains (DRDs) to control protein function using an FDA-approved small molecule, and is continually expands its library of identified DRDs of varying sizes and purposes. The company's lead drug, OBX-115, is an experimental therapy using tumor-infiltrating lymphocytes genetically modified to produce a membrane-bound (non-secreted) cytokine (IL15). Obsidian is conducting a multicenter clinical trial for the treatment of advanced melanoma and non-small cell lung cancer.
Founded: 2015
Website: https://obsidiantx.com/
Obsidian Therapeutics develops precision cell and gene therapies to expand the capabilities of adoptive cancer immunotherapy. The company has developed the cytoDRiVE platform, which leverages drug-responsive domains (DRDs) to control protein function using an FDA-approved small molecule, and is continually expands its library of identified DRDs of varying sizes and purposes. The company's lead drug, OBX-115, is an experimental therapy using tumor-infiltrating lymphocytes genetically modified to produce a membrane-bound (non-secreted) cytokine (IL15). Obsidian is conducting a multicenter clinical trial for the treatment of advanced melanoma and non-small cell lung cancer.
