Wintershall

Wintershall Holding GmbH, based in Kassel, was Germany's largest crude oil and natural gas producer. It was a wholly owned subsidiary of BASF. The company was active in oil and gas exploration and production with operations in Europe, North Africa, South America as well as Russia and the Middle East region. Wintershall employed more than 2,000 people worldwide. In the 2018 financial year the company produced around 171 million barrels of oil equivalent of oil and gas. Revenues amounted to 4.09 billion euros.On 1 May 2019, Wintershall merged with DEA to form Wintershall Dea. BASF holds 67% of the shares in the joint venture.

In 2021, Wintershall was ranked no. 25 out of 120 oil, gas, and mining companies involved in resource extraction north of the Arctic Circle in the Arctic Environmental Responsibility Index.