Nearly 11,000 Harvard alumni filed an amicus brief with the U.S. Court of Appeals for the First Circuit backing Harvard in its legal fight against the Trump administration over federal research funding. The filing includes 881 Harvard Business School alumni holding an MBA, DBA, or HBS Executive Education certificate, with Harvard Law identified as the next largest bloc among signatories. The case—President and Fellows of Harvard College v. U.S. Department of Health and Human Services—has drawn broad cross-school alumni participation, emphasizing institutional stake in the continuation and structure of federal research dollars. The brief also reflects the ability of alumni to mobilize quickly for national-policy disputes that directly affect research operations and grant compliance. For university research leadership, the development reinforces that federal funding fights can become multi-constituency campaigns, with alumni advocacy adding to institutional legal strategy and communications planning.