JB

Justin Butler

Partner at Eclipse Ventures

San Francisco Bay Area

Overview 

Justin Butler is a Partner at Eclipse Ventures in the San Francisco Bay Area, with a focus on investing in hardware, SMB software, security, e-commerce, health IT, and AI companies at various stages. He holds an MBA from MIT Sloan School of Management and has served on the boards of companies like Capstan Medical and Nucleus Radiopharma. Butler's career highlights include founding Nucleus Radiopharma and making strategic investments in companies like Rune Labs, Cellares, and BrightInsight, contributing significantly to their growth and success in the industry.

Work Experience 

  • Partner

    2015 - Current

  • Board Member

    2023

    Novel robotics and devices for structural heart.

Capstan Medical is creating minimally invasive technologies to treat heart valve disorders.

Raised $31,400,000.00 from Intuitive Ventures, Puma Venture Capital, Yu Galaxy and Eclipse Ventures.

  • Board Member, Founder

    2022

    Redefining the manufacturing and supply chain of radiopharmaceuticals.

Nucleus RadioPharma is a new company built to ensure cancer patients can access potentially life-saving radiopharmaceuticals.

Raised $62,000,000.00 from AstraZeneca, Granger Management LLC, Mayo Clinic, GE Healthcare, Eclipse Ventures, University of Missouri, Echo Global Logistics, Fox Chase Cancer Center and Mercy Health.

  • Board Observer

    2022

    Enabling the widespread use of genomic medicine.

Watchmaker Genomics is a biotechnology company that focuses on breakthrough applications for reading, writing, and editing DNA.

Raised $48,272,983.00 from Eclipse Ventures and Decheng Capital.

  • Board Member

    2021

    Bringing precision medicine to neurology.

Rune Labs is a software and data platform for neuromodulation and brain therapies of the future.

Raised $41,255,000.00 from Moment Ventures, TruVenturo, Eclipse Ventures, Nexus NeuroTech and DigiTx Partners.

  • Board Member

    2021

SafelyYou provides fall detection and prevention technology for dementia care.

Raised $71,324,998.00 from Horizon Technology Finance.

  • Board Member

    2019

Cellares is a life sciences technology company that develops the Cell Shuttle to automate cell therapy manufacturing.

Raised $355,000,000.00 from 8VC, Koch Disruptive Technologies, Eclipse Ventures, DFJ Growth, Bristol-Myers Squibb, Decheng Capital and Willett Advisors LLC.

  • Board Member

    2019

BrightInsight offers a global regulated digital health platform for biopharma and medtech.

Raised $166,000,000.00 from Eclipse Ventures, New Leaf Venture Partners, Red Hook Capital, Sand Hill Angels, General Catalyst, Gaingels and Insight Partners.

  • Board Member

    2017

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