Mertesacker Family Office

tertium FAMILY OFFICE is an independent, owner-managed multi-family office based in Hamburg, Germany, specializing in advising large family assets with customized wealth management, family strategy, and asset structuring services. The firm emphasizes objective, flexible, and personal advice without product sales influence.

Mantzke Family Office is a Switzerland-based multi-family office headquartered in Kastanienbaum. Established in 2010, the firm provides fiduciary oversight and bespoke structuring solutions for multiple families, private individuals, multinational corporations, and active entrepreneurs. Its core services include corporate and foundation formation in Switzerland, Liechtenstein, and other global jurisdictions, fiduciary administration, trustee services, accounting, payroll, tax optimization, and regulatory compliance. In addition, the firm delivers family office services including wealth structuring, inheritance planning, and long-term asset protection. With a leadership team with extensive experience, their office brings a deep expertise in private equity, asset management, and corporate finance. The firm has an emphasis on high-touch, confidential service tailored to high-net-worth families and individuals, leveraging both in-house and external professionals to design and implement long-term financial structures. The firm's investment activity is primarily focused on enabling client allocation across private equity, real estate, and fixed income, as well as a variety of real assets. Mantzke Family Office supports transactions involving private funds and alternative assets, with particular expertise in managing real estate holdings, private equity partnerships, and complex asset vehicles such as yachts, aircraft, art, and international property portfolios.

Mayfair Vermogensverwaltungs SE, a Hamburg-based family office founded circa 2003 by the Herz families, manages multi-generational wealth focusing on long-term investments in companies, private equity, and real estate. It operates as a privately held Societas Europaea.

Metis Treuhand, based in Hamburg, Germany, is a multi-family office founded in 2012 that specializes in strategic asset structure consulting, investment controlling, and personalized asset reporting, operating independently without sales targets to serve multiple families' tailored needs.

Institutional investor. based in Grünwald Germany. LP type: Family Office. Asset class focus: Private Equity, Real Estate. Geographic focus: germany. Sectors: hotels. Active real asset investor

Gutermann Family Office, founded in 2016 and headquartered in Gutach, Germany, is a single-family office investing globally in late-stage private equity and multi-asset portfolios. The firm stems from a historic Gutermann family fortune in sewing-thread manufacturing and focuses on preserving generational wealth.