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.
Alector Inc. is a late-stage clinical biotechnology company developing immunotherapies for neurodegenerative diseases, including Alzheimer's disease. The company's drug discovery and development pipeline relies on animal testing as a standard component of preclinical research. For example, the development of its candidate AL002 involved preclinical evaluation in animal models, as documented in a 2024 study funded by the company. Alector's corporate filings explicitly acknowledge that some long-term preclinical testing, such as animal tests of reproductive toxicity, is part of its research process. The company's pipeline page also notes that its therapeutic candidates are evaluated in animal models. As a biotechnology firm advancing novel biologic drugs, Alector conducts and funds animal testing to meet regulatory requirements for investigational new drug applications and to support its clinical trial programs.
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A digest of changes to our exclusion list — new additions, removals, and the evidence behind them. We review the list continuously as new evidence surfaces.
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.
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