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Arthur Reynolds Karell

Solo GP · Hobe Sound, FL

Verified active in the last 12 months

Arthur Reynolds Karell is a solo GP based in Hobe Sound, FL focused on B2B Software, Defense & Aerospace, investing at pre-seed to series a stage. Arthur Reynolds Karell's most recent fund with a disclosed size, First In Ventures Fund II LP, filed a $21.8M offering with the SEC in Sep 2026. Arthur Reynolds Karell has 9 funds and deal vehicles on SEC file, including 1 single-deal SPVs. Estimated typical check: $525K–$1.55M. Arthur Reynolds Karell has dated investing activity in the last 12 months (latest Sep 2026).

Why Arthur Reynolds Karell is listed

Named as the only individual (ISSUER'S MANAGING MEMBER.) on the Form D for First in SCATR 2024 LLC, a $6.6M venture fund (Sep 2026) (9 vehicles on file: 8 funds, 1 SPV). Also a non-executive director at 1 startup that filed Form D.

Source: SEC Form D: First In Ventures Fund II LP (Sep 17, 2026) · 8 more sources

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Stages
Pre-seed to Series A
Typical check (est.)
$525K–$1.55M
Latest fund
$21.8M · Sep 2026
Latest dated activity
Sep 2026

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What does Arthur Reynolds Karell invest in?

B2B SoftwareDefense & Aerospace

What has Arthur Reynolds Karell invested in recently?

  • First In Ventures Fund II LP

    Invested through a fund

    Sep 2026

  • First in SCATR 2024 LLC

    Invested through a fund

    Sep 2026

  • First In Patriot Smack LLC

    Invested through a fund

    Sep 2026

  • First In Patriot Castelion LLC

    Invested through a fund

    Sep 2026

  • First In Patriot Antithesis LLC

    Invested through a fund

    Sep 2026

  • First In Liberty Castelion LLC

    Invested through a fund

    Sep 2026

  • First in Castelion B 2024 LLC

    Invested through a fund

    Sep 2026

  • Vanguard Defense

    Board seat on the company's SEC filing (not by itself proof of an investment) · CA

    Mar 2026

  • First In Ventures Fund 3 SBIC Critical Technologies LP

    Invested through a fund

    Oct 2025

Funds and deal vehicles Arthur Reynolds Karell filed with the SEC

  • First In Ventures Fund II LP

    Fund · $21.8M offering

    Sep 2026

  • First in SCATR 2024 LLC

    Fund · $6.63M offering

    Sep 2026

  • First In Patriot Smack LLC

    Fund · $16.8M offering

    Sep 2026

  • First In Patriot Castelion LLC

    Fund · $17.6M offering

    Sep 2026

  • First In Patriot Antithesis LLC

    Fund · $4.32M offering

    Sep 2026

  • First In Liberty Castelion LLC

    Fund · $23.9M offering

    Sep 2026

  • First in Castelion B 2024 LLC

    Fund · $9.08M offering

    Sep 2026

  • First in Castelion 2024 LLC

    Deal vehicle · $2.63M offering

    Sep 2026

  • First In Ventures Fund 3 SBIC Critical Technologies LP

    Fund · $51.6M offering

    Oct 2025

Sources

Data refreshed from public sources Oct 15, 2026. Is this you? Remove or correct this profile.