Grindstone

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Grindstone

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  • Our Focus
  • Approach
  • Investment Criteria

what we look for

We partner with founders, family owners, and management teams  — bringing operational expertise and a tailored value creation plan to every investment.

$5–50M EBITDA

Profitable businesses with stable earnings and strong free cash flow conversion.

5+ Years Operating History

Established track record with proven customer relationships and contract recompete success.

Flexible Control Orientation

We pursue control and majority investments but structure transactions to fit the needs of the business and the seller — not the other way around.

Mission-Critical End Customers

Businesses serving the Department of Defense, intelligence community, or critical infrastructure operators — where switching costs are high and relationships are long.

Defensible Market Position

Companies with high barriers to entry — whether through regulatory requirements, specialized capabilities, customer intimacy, or incumbent advantage — that protect revenue and limit competition.

Platform & Add-On Opportunities

Businesses that can serve as a foundation for growth through acquisition — or companies that strengthen an existing platform through geographic expansion, capability adjacency, or customer diversification.

Hard Asset Value

Companies with owned real estate, specialized facilities, or tangible assets that provide downside protection and enhance enterprise value beyond the operating business.

Purpose-Built Value Creation

Every portfolio company receives a value creation plan built for its specific market position, growth trajectory, and operational realities. No templates. No playbooks borrowed from other sectors.

Copyright © 2026 Grindstone - All Rights Reserved. 



Washington D.C

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