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Single Family OfficePuts its own capital into companiesLAST VERIFIED Jun 2026 · 1 SOURCES

RLB Holdings

Single family office in Greenwich, United States, founded 2011; focus on healthtech, software and mobility.

USEFUL FOR Co-investors

Family & background

FAMILY
Bartoszek
HEADQUARTERS
Greenwich, United States
FOUNDED
2011

Investment approach

SECTORS
HealthTechSoftware & SaaSMobility & LogisticsReal Estate & PropTechIndustrial & ManufacturingArtificial IntelligenceBiotech & Life SciencesConsumer & E-commerce
ROUTES
Companies (own capital)

Overview

Founded in 2011, this single family office has its headquarters in Greenwich, United States. Its sector focus covers healthtech, software, mobility and real estate. It invests directly in companies; 2 people are named on its team.

People

  • Ray Bartoszek
    Founder and Managing Partner · source
  • Lydia Bartoszek
    Co-founder and Managing Partner · source

Frequently asked questions

RLB Holdings is a single family office based in Greenwich, the United States, founded in 2011.

RLB Holdings invests on behalf of the Bartoszek family.

RLB Holdings invests its own capital into companies.

RLB Holdings invests in HealthTech, Software & SaaS, Mobility & Logistics, Real Estate & PropTech, Industrial & Manufacturing, Artificial Intelligence, Biotech & Life Sciences and Consumer & E-commerce.

Key people at RLB Holdings include Ray Bartoszek (Founder and Managing Partner) and Lydia Bartoszek (Co-founder and Managing Partner).