Spero Therapeutics, Inc. is on the Cruelty Free Investing list for exploiting animals because the company does animal testing for some of their medical analysis and clinical research.
The company stated in the following report that they exploit animals for product testing.
“In contrast, untreated animals or mice receiving SPR741 alone succumbed to infection. Rifampin alone only provided 50% survival.” Read the full document
Company Website: https://sperotherapeutics.com