Reinhard Westhäuser

Dyckerhoff AG engages in the production of cement and ready-mixed concrete products. Its products include dray cement, white cement, and concrete. The company was founded by Wilhelm Gustav Dyckerhoff, Gustav Dyckerhoff, and Rudolf Dyckerhoff on June 4, 1864 and is headquartered in Wiesbaden, Germany.

Founded in 2001, One Equity Partners LLC is a private equity firm headquartered in New York City.

Arthur Andersen LLP used to provide accounting services. It was also into consulting services for clients that operate businesses throughout the United States and around the world. Arthur Andersen was founded in 1913 and was headquartered in Chicago, IL.

Caldic BV is a holding company, which engages in the distribution of chemicals and food ingredients. It markets food, industrial, health, and personal care products. The company was founded by Joop N. A. van Caldenborgh in 1970 and is headquartered in Rotterdam, the Netherlands.

Part of Buzzi SpA, Dyckerhoff Zement Gmbh is a German cement manufacturing company. The company is based in Wiesbaden, Germany. Peter Steiner has been the CEO of the company since 2002.

Clariant International AG manufactures specialty chemicals. It is involved in the following business areas: Care Chemicals, Natural Resources, Catalysis, and Plastics and Coatings. The company was founded in 1995 and is headquartered in Muttenz, Switzerland.

OEP Capital Advisors LP (OEP Capital Advisors) is an Private Equity firm founded by Dick Cashin in 2001. The firm is headquartered in New York with additional offices in Frankfurt and Amsterdam.

Part of Hasit Trockenmörtel GmbH, Fixit Trockenmörtel Holding AG manufactures mortar, concrete, cement, and plaster for the building industry. The company is based in Holderbank, Switzerland.