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Series B investors active this year

224 US Series B investors filed a new fund, deal vehicle or board seat with the SEC in the last 12 months, 86 (38%) of them in the last 90 days. The top home states are California (98), New York (40) and Massachusetts (22); the most common sectors are AI & ML (88), Healthcare (48) and B2B Software (48). For the 194 with a stated or estimated check size, the median range is $2.5M–$7.6M. Stage comes from the investor's own website where it says; otherwise from fund size and the rounds it has joined, with angels, syndicates and accelerators counted as pre-seed and seed.

Updated from SEC filings · How we build this list

How many Series B investors are investing right now?

224 filed a new fund, deal vehicle or board seat with the SEC in the last 12 months, 86 of them in the last 90 days.

How much do Series B investors typically invest?

The median estimated check is $2.5M–$7.6M, across 194 investors with a plausible estimate. Actual checks vary by round and lead role.

Where are Series B investors based?

Most are in California (98), New York (40) and Massachusetts (22).

What sectors do Series B investors back most?

AI & ML (88), Healthcare (48) and B2B Software (48) lead, by investors with recent activity in each.

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  • EpsilonVC firm · Washington Dc, DC

    Seed, Series B · checks $500K–$1.5M (est.)

    Healthcare

  • Barrel VenturesVC firm · Evanston, IL

    Seed, Series B · checks $300K–$900K (est.)

    Mobility & LogisticsFood & AgricultureConsumer

  • Suffolk TechnologiesVC firm · Boston, MA

    Pre-seed to Growth · checks $1.5M–$4.5M (est.)

    B2B SoftwareReal Estate & PropTechAI & MLClimate & Energy

  • Ridge VenturesVC firm · San Francisco, CA

    Seed to Series B · checks $2.45M–$7.4M (est.)

    B2B Software

  • Ansa CapitalVC firm · New York, NY

    Series A, Series B · checks $2M–$6M (est.)

    AI & MLCybersecurityDefense & Aerospace

  • Brave CapitalVC firm · San Rafael, CA

    Series B · checks $250K–$700K (est.)

    AI & MLCybersecurity

  • Odyssey HandshakeVC firm

    Series B

    Climate & Energy

  • SkyBeam Venture PartnersVC firm · New York, NY

    Seed to Series B · checks $2.5M–$7.5M (est.)

    Sector focus not yet verified

  • Era Compute InvestmentVC firm · New York, NY

    Seed to Series B · checks $2.5M–$7.5M (est.)

    Developer Tools

  • StrategicVC firm · Boston, MA

    Seed to Series B · checks $3.73M–$11.2M (est.)

    Sector focus not yet verified

  • ECO FleetVC firm · Beverly, MA

    Seed to Series B · checks $2.5M–$7.5M (est.)

    Mobility & Logistics

  • YCP26VC firm · Mountain View, CA

    Series B, Growth · checks $17.1M–$51.4M (est.)

    Sector focus not yet verified

  • YCA26VC firm · Mountain View, CA

    Series A to Growth · checks $7.28M–$21.9M (est.)

    Sector focus not yet verified

  • Voyager PartnersVC firm · San Francisco, CA

    Seed to Series B · checks $3M–$9M (est.)

    Deep TechClimate & Energy

  • Notable CapitalVC firm · Menlo Park, CA

    Seed to Growth · checks $150K–$400K (est.)

    AI & MLCybersecurityDeveloper Tools

  • Verdict CapitalVC firm · Gladwyne, PA

    Seed to Series B · checks $3M–$9M (est.)

    Sector focus not yet verified

  • Excelerate Health VenturesVC firm · Durham, NC

    Seed to Series B · checks $225K–$650K (est.)

    HealthcareBiotech & PharmaB2B Software

  • AltosVC firm · Burlingame, CA

    Seed to Series B · checks $3.5M–$10.5M (est.)

    AI & ML

  • Hyde Park Venture PartnersVC firm · Chicago, IL

    Pre-seed to Series B · checks $1M–$3M (est.)

    AI & MLHealthcareDeveloper ToolsMobility & Logistics+1

  • SorensonVC firm · Lehi, UT

    Seed to Series B · checks $3M–$9M (est.)

    Sector focus not yet verified

  • BOLDVC firm · Santa Monica, CA

    Pre-seed to Series B · checks $200K–$600K (est.)

    Biotech & PharmaAI & MLSpace

  • Aurelia FoundryVC firm · Wellesley, MA

    Pre-seed to Growth · checks $750K–$2.25M (est.)

    Hardware & RoboticsSpace

  • Lerer HippeauVC firm · New York, NY

    Seed to Series B · checks $4.17M–$12.5M (est.)

    AI & MLMobility & LogisticsMedia, Gaming & Creator

  • AifVC firm · Orlando, FL

    Seed to Growth · checks $325K–$1M (est.)

    Healthcare

  • VersantVC firm · San Francisco, CA

    Seed to Growth · checks $2.98M–$8.95M (est.)

    Biotech & Pharma

  • GradientVC firm · Arden Hills, MN

    Seed to Series B · checks $2.27M–$6.8M (est.)

    Deep Tech

  • Smash CapitalVC firm · West Hollywood, CA

    Series A to Growth · checks $8.28M–$24.8M (est.)

    AI & ML

  • AlleyCorpVC firm · New York, NY

    Seed to Series B · checks $3.35M–$10.1M (est.)

    Climate & EnergyHealthcareBiotech & Pharma

  • Bain Capital VentureVC firm · Boston, MA

    Seed to Growth · checks $4.33M–$49.4M (est.)

    Climate & EnergyReal Estate & PropTechBiotech & PharmaCybersecurity

  • Altimeter Venture PartnersVC firm · Boston, MA

    Series A to Growth · checks $7.5M–$22.5M (est.)

    Sector focus not yet verified

  • BroadvailVC firm · Houston, TX

    Seed to Series B · checks $3.92M–$11.8M (est.)

    Real Estate & PropTech

  • Obvious VenturesVC firm · San Francisco, CA

    Seed to Series B · checks $4M–$12M (est.)

    HealthcareAI & ML

  • Claritas HealthcareVC firm · Nashville, TN

    Pre-seed to Series B · checks $50K–$150K (est.)

    HealthcareReal Estate & PropTech

  • Venrock AssociatesVC firm · Palo Alto, CA

    Seed to Growth

    Biotech & PharmaB2B SoftwareHealthcareAI & ML

  • Connect VenturesVC firm · Los Angeles, CA

    Seed to Growth

    Media, Gaming & CreatorConsumerAI & ML

  • TribecaVC firm · New York, NY

    Seed to Growth · checks $1.5M–$4.5M (est.)

    AI & MLB2B Software

  • Ribbit CapitalVC firm · Palo Alto, CA

    Seed to Growth

    Crypto & Web3

  • Eqiq LLC VCVC firm · Chicago, IL

    Seed to Series B · checks $3.7M–$11.1M (est.)

    Sector focus not yet verified

  • ModerneVC firm · Chicago, IL

    Series A to Growth · checks $750K–$2.25M (est.)

    Deep TechB2B SoftwareAI & MLReal Estate & PropTech+1

  • YosemiteVC firm · San Francisco, CA

    Seed to Series B · checks $3.5M–$10.5M (est.)

    Sector focus not yet verified