ENA Respiratory Raises $22.4M in Series B to Advance Antiviral Host Defense Programs

ENA Respiratory Raises $22.4M in Series B to Advance Antiviral Host Defense Programs

Oct 22, 2025

Deal Summary

ENA Respiratory, a Melbourne clinical-stage pharmaceutical company developing antiviral host defense enhancers, secured $22.4M (AUD34M) in a Series B round led by existing and new backers to advance its clinical programs. Investors include the Gates Foundation, Flu Lab, Brandon Capital, Uniseed and Stoic Venture Capital.

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