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    Washington Harbour Partners

    Arlington, Virginia, United StatesFounded 2019
    washingtonharbour.comLinkedIn
    CybersecurityGovernment & CivicEnterprise SoftwareDefense & Space

    Washington Harbour Partners LP is a fundamentally driven alternative investment firm based in Arlington, VA, that invests in high-quality U.S. public and private companies across cybersecurity, government technology, and enterprise technology. Founded in 2019, the firm partners with mission-critical, non-cyclical businesses, combining flexible capital with deep operating expertise.

    33% of their portfolio is in Defense & Space. Deal activity increased 129% year-over-year (16 deals in the last 12 months). Average disclosed round size is $149.4M (across 33 rounds with reported amounts).

    Find people at Washington Harbour Partners on Goldilocks AI

    Portfolio

    34

    Fund Size

    —

    Top Stage

    Series B

    Last 12 Mo

    16

    Team

    AZ

    Alexandra Zhang

    Investment Partner

    BS

    Brian Smith

    Senior Partner

    CK

    Courtney Kelly Page

    Investment Partner

    DM

    Daim Malik

    Investment Partner

    FL

    Frank Li

    Investment Partner

    JE

    Joseph Ender

    Investment Partner

    MA

    Min An

    Investment Partner

    PS

    Prak Shukla

    Investment Partner

    CS

    Claire Souhan

    Director of Operations

    BS

    Brian Schulze

    Principal

    SW

    Shirley Wang

    Investment Associate

    ZD

    Zach Dedas

    Investment Associate

    Portfolio Breakdown

    Stage Distribution

    Sector Distribution

    Investment Activity

    DealsAvg Round Size

    Portfolio

    43 investments
    CompanyRoundAmountDate
    Hadrian logoHadrianSeries C$260MAug 2026
    Hadrian logoHadrianSeries B$117MAug 2026
    Mariana Minerals logoMariana MineralsSeries B$310MAug 2026
    MMarianaSeries B$310MAug 2026
    ANELLO Photonics logoANELLO PhotonicsUnknown$25MMay 2026
    CCitra SpaceSeries A$15MApr 2026
    Striveworks logoStriveworksSeries B—Mar 2026
    Worldscape logoWorldscapeSeed—Mar 2026
    Smack logoSmackSeed—Mar 2026
    VulcanForms logoVulcanFormsSeries D$220MJan 2026
    Northwood Space logoNorthwood SpaceSeries B$100MJan 2026
    Array Labs logoArray LabsSeries A$20MJan 2026
    Array logoArraySeries A$20MJan 2026
    Shield Ai logoShield AiGrowth—Jan 2026
    Firestorm Labs logoFirestorm LabsSeries B$82MJan 2026
    Stoke logoStokeSeries E—Jan 2026
    Smack logoSmackSeries A$32MJan 2026
    Standard Nuclear logoStandard NuclearSeries A$140MJan 2026
    Apex logoApexSeries A—Jan 2026
    Trusted Space logoTrusted SpaceUnknown—Dec 2025
    Quindar logoQuindarSeries A$18MNov 2025
    Stoke logoStokeSeries D$510MOct 2025
    Medallion logoMedallionSeries C$43MAug 2025
    Rune Technologies logoRune TechnologiesSeries A$24MJul 2025
    Firestorm Labs logoFirestorm LabsSeries A$47MJul 2025
    Page 1 of 2

    Top Co-Investors

    Andreessen Horowitz11 shared
    StepStone Group6 shared
    Founders Fund6 shared
    Y Combinator6 shared
    137 Ventures4 shared
    Andreessen Horowitz (a16z) Bio + Health4 shared
    Lockheed Martin Ventures4 shared
    Decisive Point4 shared
    1789 Capital4 shared
    CapitalG4 shared
    In-Q-Tel4 shared
    Industrious Ventures4 shared
    Glade Brook Capital Partners4 shared
    US Innovative Technology3 shared
    Spark Capital3 shared
    Sequoia Capital3 shared
    Alumni Ventures3 shared
    Catapult Ventures3 shared
    T. Rowe Price3 shared
    Apollo Global Management, Inc.3 shared

    Last updated: 7 October 2026