Gastauer Family Office (GFO) is the private investment office of the Gastauer family, managing a diversified portfolio of long-term investments across technology, financial services, private equity, real estate, contemporary art, crypto assets and global capital markets. Its investment philosophy combines capital preservation with long-term value creation through strategic investments in innovative businesses and alternative asset classes.
Michael Gastauer began his entrepreneurial career at the age of 24, founding his first financial services company, which rapidly grew to manage more than US$1 billion in client assets before being successfully acquired by a global investment firm. He later founded one of Europe’s early online payment companies, providing global card acceptance and payment processing solutions for e-commerce businesses.
In 2015, Michael Gastauer founded Black Banx Group, a global digital banking and financial services group built to provide borderless banking for consumers and businesses worldwide. Today, Black Banx serves more than 100 million customers across over 180 countries, generates multi-billion US dollar annual profits, and, as of June 2026, had a private market valuation of US$150 billion, making it one of the world’s largest privately held digital banking groups. Gastauer Family Office was an early investor in Black Banx and today remains one of its largest shareholders.
In January 2024, Gastauer Family Office allocated US$1.5 billion to establish and endow the Gastauer Foundation, reinforcing the family’s long-term commitment to philanthropy. Today, the Foundation supports financial inclusion, biodiversity conservation, education, contemporary art and culture, and environmental sustainability through strategic partnerships and initiatives that create lasting social and environmental impact.
Through its investment activities and philanthropic initiatives, Gastauer Family Office reflects Michael Gastauer’s long-term vision of building sustainable value, advancing financial innovation, protecting the natural environment, expanding educational opportunities, and supporting the arts for future generations.