Partnerships That Last
We prioritize strong relationships and sustainable growth with privately held companies for mutual success.
Family Business Mindset
Combine the benefits of family and investor ownership together for responsible decision making and growth
Trusted Partner
Work with business owners who value industrial heritage to safeguard legacy by preserving operating cultures and employees
Empower Management Teams
We treat our partners with integrity, loyalty and transparency by letting them run the company and providing strategic support
Real Operating Expertise
Bring a core team with 120+ years of operating experience successfully building and transforming business for long term value creation
Aligned Patient Capital
We invest for the long term alongside owners and management and build for sustainable growth beyond an investment horizon
Flexible Solutions
JMC invests exclusively the capital of the Painvin family to allow greater discretion in the way we structure partnerships
Partners in Ambition
At JMC Family Office, we value enduring connections rooted in integrity and open dialogue. Our commitment to partnership ensures that we grow together, fostering a relationship built on trust and ambition.






Current Portfolio
Sectors of Focus
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Advanced Manufacturing
- Aerospace & defense
- Industrial
- Medical device components
- Precision machining & tooling
- Specialty materials & composites
- Electronics and sensors

B2B Services
- Automation
- Design & engineering
- Testing & certification
- Electrical
- Packaging
- Tech enabled services
- Other niche B2B services w/ premium margins
Investment Criteria
Sales
EBITDA
Investment Style
Long term, patient and operator-oriented capital.
Ownership
Seeking controlling stake. Supportive of founder/management reinvestment.