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

Castletop Capital

Single family office in Austin, United States, founded 2000; focus on healthtech, real estate and climate.

USEFUL FOR Co-investors

Family & background

FAMILY
Topfer
HEADQUARTERS
Austin, United States
FOUNDED
2000

Investment approach

SECTORS
HealthTechReal Estate & PropTechClimate & Energy
ROUTES
Companies (own capital)

Overview

This single family office is based in Austin, United States; it was founded in 2000. Listed sector interests include healthtech, real estate and climate. It invests directly in companies; 3 people are named on its team.

People

  • Mort Topfer
    Co-founder and Managing Director · source
  • Alan Topfer
    Co-founder and Managing Director · source
  • Richard Topfer
    Co-founder and Managing Director · source

Frequently asked questions

Castletop Capital is a single family office based in Austin, the United States, founded in 2000.

Castletop Capital invests on behalf of the Topfer family.

Castletop Capital invests its own capital into companies.

Castletop Capital invests in HealthTech, Real Estate & PropTech and Climate & Energy.

Key people at Castletop Capital include Mort Topfer (Co-founder and Managing Director), Alan Topfer (Co-founder and Managing Director) and Richard Topfer (Co-founder and Managing Director).