About Us

Narrow River Capital is a private investment firm focused on partnering with high-quality industrial services businesses across the lower middle market. We bring flexible, long-duration capital and hands-on operating experience to support business owners through periods of growth, transition, or succession. Our approach is collaborative, patient, and tailored — designed to preserve what makes each business unique while unlocking its next phase of potential.

We focus on U.S. and Canadian companies with between $2 million and $15 million in EBITDA, operating in fragmented sectors supported by durable long-term trends. We prioritize founder- and family-led businesses with strong unit economics and a clear competitive edge, and we aim to be a trusted partner — not just a financial sponsor — as they chart their path forward.

How We Create Value

We partner with companies to drive growth and professionalization through a repeatable, founder-friendly model

Operational Professionalization

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  • Implement modern financial controls, KPIs, and board-level reporting

  • Upgrade systems (ERP, CRM, dispatch/work order platforms) to enable data-driven decision-making

Talent Development

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  • Recruit or elevate professionalized leadership teams with equity alignment

  • Support succession transitions from founder to next-generation operators

  • Create incentive structures to retain frontline and technical employees

Buy-and-Build Execution

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  • Identify and execute bolt-on acquisitions to expand geography, capabilities, or density

  • Integrate acquired businesses efficiently using a repeatable playbook

  • Leverage scale to negotiate better vendor and customer terms

Financial Engineering & Capital Efficiency

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  • Optimize working capital, capex, and debt structure to enhance returns

  • Align capital strategy with growth and acquisition tempo

  • Prepare for a scalable, institutional-grade exit

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Louis Solmonson

Founder

Louis founded Narrow River Capital to bring institutional‑quality investing and hands‑on operating support to founder‑led companies. Before establishing the firm, Louis was an investor at Strategic Value Partners, focusing on middle‑market industrial businesses, and previously held roles at Apollo, CVC Capital Partners and Goldman Sachs.

He earned his BA from Brown University and MBA from the University of Chicago Booth School of Business, graduating with honors from both.

Team

Bringing institutional experience to the lower middle market