John Mandelker

Active Investor

Expert Witness - Business Valuations - Litigation Support at Arch Equity Partners

St. Louis, Missouri

John Mandelker, Expert Witness - Business Valuations - Litigation Support at Arch Equity Partners is an active investor based in St. Louis, Missouri. This profile covers what John Mandelker backs, at which stage, and how founders can reach out in 2026.

Investor type: PEInvestment Partner
Stages: SeedSeries ASeries BLate Stage Venture
Invests in: Healthcare & BiotechBiotech & PharmaSaaS & EnterpriseConsumer & RetailConsumer Goods (CPG)Developer Tools & DataIoT & Connected DevicesManufacturing & Industrial
Location: St. Louis, Missouri
Typical check: $2M
Past investments: 3

Notable investments

Chandler IndustriesHeat Transfer Tubing ProductsNorthern Technologies, LLC (NTI)

How to reach John Mandelker

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Frequently Asked Questions

What does John Mandelker invest in?

John Mandelker invests in Healthcare & Biotech, Biotech & Pharma, SaaS & Enterprise and Consumer & Retail, typically at Seed, Series A, Series B and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.