Grindstone

About Grindstone

Grindstone was founded in 2026 as a boutique private investment firm investing in lower and middle-market companies across defense, intelligence, and critical infrastructure. The name reflects our philosophy: raw potential, sharpened through discipline, becomes something enduring. We partner with founders to build lasting businesses—with an operator's perspective and a long-term commitment.

Leadership

  • Robert Rodriguez Art Director Moreno Valley, California, United States LinkedIn profile

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