About K+S KALI  ›   K+S KALI GmbH  ›  

Managing Directors


Dr. Ralf Diekmann


Dr. Rainer Gerling

Graduated Mining Engineer

K+S KALI GmbH Managing Director
born 1958, married
joined K+S in 1985

Production and Technology


Dr. Rainer Gerling was born in Lingen/Ems in 1958. After graduating in mining engineering from Clausthal Technical University, he joined what was Kali und Salz AG at the time as a trainee in 1985. From 1988 until 1996, he was initially head of mining technology and later also head of underground production technology at the Niedersachsen-Riedel plant. During that time, he also pursued doctoral studies in addition to his work and was awarded a PhD by Clausthal Technical University in 1994. In 1996/97, he worked on mining-related tasks at K+S AG headquarters before becoming head of underground production and technology at the Zielitz potash plant. In 2000, he moved to the same position at the Werra potash plant’s Hattorf/Wintershall mine. On January 1, 2009, he became plant manager with responsibility for production and technology at the Werra plant. He has been appointed to the executive management of K+S KALI GmbH with effect from January 1, 2016. Dr. Rainer Gerling is married.



Alexa Hergenröther


Alexa Hergenröther

Graduated Business Economist

K+S KALI GmbH Managing Director
born 1970; married; two children
joined K+S in 2002

Marketing and Sales


Alexa Hergenröther was born in Malsch (Baden-Württemberg) in 1970. She studied business administration at the University of Mannheim. After graduating in 1997, she joined auditors Deloitte & Touche in Hanover as a trainee and worked afterwards as audit manager and project manager. At the same time, she prepared to qualify as a tax advisor, successfully completing the examination in 2002. In the same year, Alexa Hergenröther moved to Kassel to join the K+S Group. Initially she worked as a taxation specialist and in 2006, she was appointed to head the holding company’s corporate development unit. In January 2012 she assumed the position of Managing Director of K+S Chile S.A. (formerly Sociedad Punta de Lobos S.A.). She has been appointed to the Executive Management of K+S KALI GmbH with effect from 1 June 2014. Alexa Hergenröther is married and has two daughters.







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