Neuron23 closes $96.5 million Series D financing

25 June 2025

US clinical-stage biotech Neuron23 announced it has closed a $96.5 million Series D financing round and provided an update on its research pipeline.

The financing was led by a healthcare investor, with significant support from existing investors Westlake Village BioPartners, SoftBank Vision Fund 2, Redmile Group, Blue Owl, Kleiner Perkins, HBM Healthcare Investments (Cayman) Ltd., and Acorn Bioventures.

The company announced the first patient has been dosed in the global Phase II NEULARK clinical trial of NEU-411, a brain-penetrant, potent and selective inhibitor of LRRK2, in people with early Parkinson’s disease (PD).

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