ZENAS BIOPHARMA INC

Zenas BioPharma is a clinical-stage biopharmaceutical company whose core business involves developing therapeutic candidates that require animal testing for regulatory approval and research. The company's pipeline includes immunology and oncology drug candidates, which are subject to preclinical testing mandates under the U.S. Food and Drug Administration and other global regulatory agencies. This testing inherently involves the commercial use of animals in laboratory research. The company's SEC filings reference compliance with the Animal Welfare Act in the context of its clinical programs, confirming animal use is integral to its development process. As flagged by Cruelty Free Investors, the company's operations fall within the broad commercial exploitation of animals for product development, a category reserved for businesses whose activities are not covered by more specific codes like animal testing for cosmetics or entertainment.