Investing in the Future.™

Mill River Capital invests in pre-seed and seed stage companies that are pioneering the future of digital, energy, aerospace, and deep tech.

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For Founders

You Have a Vision.

We help you achieve it.

Mill River champions founders who are redefining and expanding markets with:

  • Relationship-based capital investment,
  • Meaningful mentoring and connections, and
  • Our proprietary early-stage success framework.

What Founders Receive

Pre-seed and seed capital from investors who understand early-stage risk
Direct access to a network of operators, domain experts, and follow-on investors
A structured framework for go-to-market, hiring, and growth, built for early-stage realities
A long-term partner, not a transactional check

For Investors

Help Shape the Future.

Capitalizing the next generation of innovation.

Mill River works closely with investors to provide:

  • Early access to visionary founders and technologies,
  • Flexible investment options via a fund or co-investment, and
  • Connectivity to our investor and founder network.

Investment Access

Curated deal flow across digital, energy, aerospace, deep tech, and hard tech
Exclusive co-investment opportunities
Exceptional portfolio visibility and reporting
A community of aligned investors focused on long-horizon impact

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To learn more, please tell us about yourself.