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Sutro Biopharma, Inc.

STRO

Health Care

1

exclusion reason

1 theme

Animal Welfare (1)
STRO Health Care Current as of March 2026

This page is part of our public exclusion list — a transparency tool that shows which companies we screen out and why. It is not investment advice, and it is not an accusation. But it is subject to change as our understanding of the facts evolves.

Animal Testing & Research
Since Jan 3, 2022

Sutro Biopharma, Inc. is a clinical-stage oncology company developing antibody-drug conjugates and other protein-based therapeutics. The development of such biologic drugs, particularly for regulatory approval, inherently requires animal testing to evaluate safety, efficacy, and pharmacokinetics. This testing is a standard, non-optional component of the biopharmaceutical development process.

The company is listed by Cruelty Free Investors as a company that conducts animal testing. As a firm whose entire pipeline and business model are predicated on advancing novel cancer therapies through clinical trials and regulatory approval, Sutro Biopharma’s operations are fundamentally reliant on animal-based research.

Research Sources 1 organization
Cruelty Free Investors
External

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Companies appear on our exclusion list based on our investment judgment — not because they've done anything illegal. This is a difference of values and opinion, not an accusation of wrongdoing. Exclusion does not constitute a recommendation against investing in any company, and absence from the list does not constitute a recommendation to invest.

This information is provided for educational and transparency purposes only and should not be relied upon as investment advice. Data is drawn from independent watchdogs, NGOs, government registries, and Ethical Capital's ongoing research — see Research Sources for the full list.

Ethical Capital LLC is a state-registered investment adviser in Utah (CRD #316032). Registration does not imply a certain level of skill or training.