Firms

Hallstone Ventures

Hallstone Ventures

hallstoneventures.com

Hallstone Ventures is a Los Angeles-based seed investment manager backing software and AI infrastructure for media, entertainment and advertising. It invests in tools that help creative businesses operate and monetize, advertising measurement and decision systems, immersive and spatial production technologies, and emerging media infrastructure. The firm supports founders through sector expertise, introductions to buyers and an operator network spanning studios, streaming services and technology companies. Founder Seth Hallen and four venture partners bring experience in production workflows, enterprise technology and venture banking. Its initial Fund I portfolio includes space robotics, advertising decision software, video training-data infrastructure and fan-content platforms.

Founded
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Type
Venture capital

Funds1

  • Hallstone Ventures Fund I—

    Inaugural seed fund of Hallstone Ventures, investing in AI and software infrastructure serving media, entertainment and advertising. The firm announced its final close on May 14, 2026 with approximately 70 limited partners; fund size was not disclosed. Its four investment areas cover creator infrastructure, advertising and monetization systems, immersive and spatial media tools, and emerging media infrastructure.

Team

Operations and support

Andy BeachVenture Partner
Claire LeeVenture Partner
Dave KochbeckVenture Partner
Leon SilvermanVenture Partner
Seth HallenFounder and Managing Partner

Co-investing

No co-investors on record yet.

Investments