BillionaireNet
Hollweg
K
Rank #2788
GERMANYManufacturingplumbing/heating supplies

Kai-Uwe Hollweg

Net Worth
$1.233B
0% (24h)
Kai-Uwe Hollweg, a 59-year-old German entrepreneur, ranks among the world's wealthiest individuals with a net worth of $1.2 billion as of December 16, 2025. His source of wealth stems from plumbing and heating supplies, an industry in which he has demonstrated significant business acumen. Hollweg chairs the advisory board of Cordes & Graefe, the parent company of the GC Group, a major wholesaler of plumbing and HVAC systems. His career includes leadership roles within the company, including serving as Geschäftsführer (Managing Director) and later transitioning to the role of Beiratsvorsitzender (Chairman of the Advisory Board). His achievements are marked by his contribution to the growth and success of the GC Group, which is a leading wholesaler in the plumbing and HVAC industry, with sales of $15.5 billion in 2022. Hollweg's residence is in Bremen, Germany.

The Full Dossier

Early Life and Career

Kai-Uwe Hollweg was born in Bremen, Germany, on October 13, 1937. He graduated from the Rudolf-Steiner-Schule and went on to complete an apprenticeship as a wholesale merchant while also attending the Staatliche Handelsschule. In August 1956, he became a personally liable partner in his father's company, Cordes & Graefe, located in Bremen.

Rise to Success

Hollweg's career progressed within the family business, Cordes & Graefe, a plumbing and heating supplies company. He served as the Geschäftsführer of Cordes & Graefe Sanitär- und Heizungsgroßhandlung in Bremen. His leadership extended to other related entities, including Cordes & Graefe Beteiligungs- und Finanzierungsgesellschaft mbH & Co. in Bremen and GC Sanitär- und Heizungs-Handels-Contor GmbH in Bonn. From 1969 to 1971, he was the second chairman of the Bundesverband Junger Unternehmer (BJU). In 2016, Hollweg transitioned from the management board to the advisory board of Cordes & Graefe. He later became the chairman of the advisory board.

Key Business Strategies

Key strategies involved in Hollweg's success include his leadership in the Cordes & Graefe group, which grew through acquisitions to become one of the largest wholesalers in the industry. As the leader, he helped the company navigate the complexities of the plumbing and HVAC market. His focus on the three-stage distribution process has been a key factor in the group's success. His business expertise includes the management of a large-scale wholesale operation and the establishment of a significant market presence.

Philanthropy

Together with his wife, Karin, Kai-Uwe Hollweg founded the Karin and Uwe Hollweg Foundation in 1996. The foundation is dedicated to promoting art, culture, and the preservation of historical monuments. The foundation supports various cultural projects and has notably supported the reconstruction of the Dresden Frauenkirche and other church restorations in eastern Germany.

Career Timeline

2016

Became Beiratsvorsitzender

Took on the role of Chairman of the Advisory Board of Cordes & Graefe.

2016

Transitioned to the Advisory Board

Moved from the management board to the advisory board of Cordes & Graefe.

1969-1971

Second Chairman of the Bundesverband Junger Unternehmer (BJU)

Served as the second chairman of the Bundesverband Junger Unternehmer (BJU).

1956

Joined Cordes & Graefe

Became a personally liable partner in his father's company, Cordes & Graefe.

Philanthropic Impact

Culture and PreservationUndisclosed

Karin and Uwe Hollweg Foundation

Supports art, culture, and historical monuments.

Wealth Trajectory