Gossamer Bio, Inc. is on the Cruelty Free Investing use of animals list because they conduct pre-clinical studies of their drugs on animals to assess a product’s safety profile.
The company stated in the following report that they exploit animals for product testing.
“GB004 is designed to be gut-targeted with higher intestinal exposure than systemic exposure. In IBD animal models, GB004 has demonstrated greater accumulation of HIF-1a than HIF-2a which may lead to restoration of epithelial barrier function and resolution of inflammation, while avoiding the potential adverse effects of increased EPO.” (Page 107) Read the full document
Company Website: https://www.gossamerbio.com