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Alex Rosen

Managing Partner at Spruce Street Capital LP

New York, New York

Overview 

Alex Rosen is a Biotech Investor at Spruce Street Capital in New York, with a background in medicine, business, and biotechnology. With experience as a Partner at Venrock and Managing Partner at Spruce Street Capital, Rosen has a strong track record in investing in biotech companies at various stages, specializing in sectors like Pharmaceuticals and BioTech.

Work Experience 

  • Managing Partner

    2024 - Current

  • Board Member

    2023 - 2023

Upstream Bio focuses on developing an antibody therapy for the treatment of severe asthma.

Raised $408,000,000.00 from Wellington Management, Access Biotechnology, Bain Capital Life Sciences, HBM Partners, Decheng Capital, HBM Healthcare Investments, Samsara BioCapital, Enavate Sciences, Venrock Healthcare Capital Partners and Altshuler Shaham.

  • Partner

    2020 - 2023

  • Biotech investor

    2016 - 2023

    Public and private/crossover biotechnology investing

Venrock is a venture capital firm investing in technology and healthcare companies.

  • Board Member

    2022 - 2023

    IPO Sep 2023 (NASDAQ: RYZB) acquired by Bristol Myers Squibb for $4.1 billion, Dec 2023

RayzeBio is a pharmaceuticals company that develops targeted radiopharmaceutical drugs for cancer.

Raised $418,000,000.00 from Soleus Capital, Ally Bridge Group, Viking Global Investors, Laurion Capital Management, Wellington Management, Sands Capital Ventures and Sofinnova Investments.

  • Business Development

    2015 - 2015

Regeneron Pharmaceuticals specializes in the discovery, development, and commercialization of innovative medicines.

Raised $15,931,980.00 from U.S. Department of Health & Human Services.

  • Summer Associate

    2014 - 2014

McKinsey Growth Tech serves leading growth stage tech players, venture capital, and growth private equity

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