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    RiverVest Venture Partners logo

    RiverVest Venture Partners

    St. Louis, Missouri, United StatesFounded 2000

    RiverVest Venture Partners is a venture capital firm based in St. Louis, Missouri, that builds and invests in early-stage life science companies, focusing on biopharmaceuticals and medical devices. Founded in 2000, the firm has raised over $1.6 billion in total assets under management across five funds, with its latest fund (RiverVest Venture Fund V) closing at $275 million in March 2021.

    35% of their portfolio is in Biotech & Life Sciences. Deal activity decreased year-over-year (2 deals in the last 12 months vs 4 prior). Their most common stage is series-b (42% of deals). Average disclosed round size is $65.1M (across 65 rounds with reported amounts).

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    Portfolio

    48

    Fund Size

    $275M

    Top Stage

    Series B

    Last 12 Mo

    2

    Team

    JW

    Jay W. Schmelter

    Co-Founder & Managing Director

    TM

    Tom Melzer

    Co-Founder and Managing Director

    IZ

    Isaac Zike

    Managing Director

    KS

    Karen Spilizewski

    Managing Director

    NO

    Niall O'Donnell

    Managing Director

    MB

    Michael Berman

    Consultant and Venture Partner

    KC

    Kelly Cathey

    Director of Administration

    NM

    Nafise Masoumi

    Principal

    NM

    Nafiseh Masoumi

    Principal

    PK

    Pascal Krotee

    Principal

    AK

    Andrew Kleiboeker

    Associate

    JS

    Jeff Seitz

    Senior Analyst

    Portfolio Breakdown

    Stage Distribution

    Sector Distribution

    Investment Activity

    DealsAvg Round Size

    Portfolio

    69 investments
    CompanyRoundAmountDate
    Sparrow Pharmaceuticals logoSparrow PharmaceuticalsSeries B$95MSep 2025
    SSparrow PharmaSeries B$95MSep 2025
    Wugen logoWugenSeries B$115MAug 2025
    Avalyn Pharma, Inc. logoAvalyn Pharma, Inc.Series D$100MJul 2025
    Reneo logoReneoSeries B$47.3MFeb 2025
    Atalanta Therapeutics logoAtalanta TherapeuticsSeries B$75MJan 2025
    Glycomine, Inc. logoGlycomine, Inc.Series C$115MJan 2025
    Wugen logoWugenSeries A$115MJan 2025
    BBluejay TherapeuticsSeries C$182MMay 2024
    Engrail Therapeutics logoEngrail TherapeuticsSeries B$157MMar 2024
    EEngrailSeries B$157MMar 2024
    Avalyn Pharma, Inc. logoAvalyn Pharma, Inc.Series C$175MSep 2023
    AAvalynSeries C$100MSep 2023
    OncoResponse logoOncoResponseSeries D$13MMay 2023
    OncoResponse, Inc. logoOncoResponse, Inc.Unknown$13MJan 2023
    Avalyn Pharma, Inc. logoAvalyn Pharma, Inc.Series C$175MJan 2023
    BBluejay TherapeuticsSeries B$41MAug 2022
    Good Therapeutics logoGood TherapeuticsSeries B$8MDec 2021
    SStandard Bariatrics, Inc.Series B$35MJun 2021
    Sparrow Pharmaceuticals logoSparrow PharmaceuticalsSeries A$50MMay 2021
    Arch Oncology, Inc. logoArch Oncology, Inc.Series C$105MApr 2021
    OncoResponse, Inc. logoOncoResponse, Inc.Series C$40.6MJan 2021
    OncoResponse logoOncoResponseSeries C$40.6MJan 2021
    Wugen logoWugenSeries B$172MJan 2021
    RReneo Pharmaceuticals IncSeries B$95MDec 2020
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    Last updated: 7 October 2026