German businesswoman Daniela Herz  has an estimated net worth of $2.8 billion as of May 2015 according to Forbes.

Born in 1954, Daniela Herz is the only daughter of Inge Castle and Max Herz who founded the Tchibo. After the death of Max Herz, the company was taken over by his oldest son while the rest of his children sit on the supervisory board. Daniela inherited a huge amount of shares at Tchibo Holding GmbH which is now known as Maxingvest. Through the years, there has been an ongoing dispute between the sibling and it took them until 2003 to resolve it.

Eventually, Daniela and her brother Gunter left the company to establish Mayfair, their own asset management company. They sold their combined shares, 40% stake, to their siblings and brother. Together, they became more interested in Puma, a sporting goods company.

In 2006, they purchased Germanischer Lloyd, a shipping certification company. In late 2012, the company had a merger with Norway's Det Norske Veritas. The new company would later be called as DNV GL Group and is considered as one of the world's largest ship classification companies. Today, Daniela and Gunter are considered as two of the wealthiest citizens of Germany.