Brian Foos

Founder & Managing Partner @ Virgo Strategic

New York City Metropolitan Area

About

I founded Virgo to de-risk critical, underestimated components of the early-to-growth transition for founders and investors. My focus areas are strategic & financial planning, operational rigor, and high-stakes transactions like fundraising, exits, and M&A. My team and I are thought partners and trusted operators who work with founders and their leadership teams to build for scale. I spend my time in enterprise software with depth in AI, SaaS, and marketplaces. -- Prior to Virgo, I spent over a decade serving in senior board-facing roles at global venture-backed startups with AI/ML at their core, like pymetrics (CFO/COO, exit to Harver/Rubicon) and AppNexus (exit to AT&T), where I helped the teams navigate difficult transformations and transactions while being a disciplined steward of capital. In those roles I built and led growth-oriented strategic finance, sales ops, HR, and commercial legal functions. Alongside my founders, I've raised $350M+ in growth capital, closed a lot of acquisitions, and completed two IPO registrations.

Experience

  • Founder & Managing Partner at Virgo Strategic
    Jun 2022 - Present · 4 yrs 1 mo

    Thought partner & trusted operator helping VC-backed founders navigate the early-to-growth transition. Hands-on driving strategic & financial planning, operational transformations, and financings/exits.

  • Treasurer at AgenticAdvertising.org
    Dec 2025 - Present · 7 mos

  • CFO & Series B Investor at Scope3
    Sep 2022 - Present · 3 yrs 10 mos

  • Stellar Health (New York City Metropolitan Area)
    • Strategic Advisor
      Feb 2026 - Present · 5 mos

    • Fractional CFO
      Jun 2024 - Jan 2026 · 1 yr 8 mos

  • Teaching Assistant, Executive MBA Program at Yale School of Management
    Mar 2025 - Jan 2026 · 11 mos

    Fall 2025: Sustainable Investment in Private Markets with professor Carlos Reyes Spring 2025: Sourcing & Managing Funds with professors Geert Rouwenhorst and Jake Thomas