Iris Zerfass, née Mueske, has been part of the FRAGOL management team since 2014. In the course of the change into a public limited company in 2017, she and Dr. Heiner Mueske formed the board of directors. Since Dr. Mueske switched to the position of a senior consultant in May 2020, Mrs. Zerfass is now the solely responsible CEO in our family company.

Mrs. Zerfass is a business lawyer (FH) and gained professional experience after vocational training at Brenntag AG in various companies and industries, most recently Deloitte, before joining our family business.


Dr. Heiner Mueske joined FRAGOL in 1980 and became managing director in 1985. He took over the company in 2004 from the then owners Fuchs Petrolub AG and TOTAL Deutschland GmbH as a management buy-out. In 2020 Dr. Mueske left the board of directors and continues to be closely associated with the company as a strategic advisor.

Supervisory board

Chairman of the supervisory board

Peter Meyer has accompanied FRAGOL AG as Chairman of the Supervisory Board since 2017.

The graduate in business administration built up several companies in the field of logistics and mobility across Germany and worked as a management consultant as well.

Since 1997 he has been involved in various roles in the ADAC, as member of presidium, board of directors and regional club board. During this time, he was also on the supervisory boards of ADAC Insurance (Schutzbrief AG, Autoversicherung AG, Rechtsschutz AG) and Zurich Insurance AG.

Member of the supervisory board

Frank Lenz has been a member of the advisory board of what was then FRAGOL GmbH+Co. KG since 2008 and a member of the company's supervisory board since 2018.

The tax advisor and auditor has been advising in his own tax advisor practice since 1986, among other topics with a focus on the transfer of companies to the next generations.

Member of the supervisory board

Dr. Martin Meyer has been a member of the Supervisory Board since 2021. The doctor of biology holds master’s degrees in commercial law and business administration. He is working for Miltenyi Biotec B.V. & Co. KG since 2008, currently as Head of Clinical Production and is responsible for process development and production of pharmaceuticals and medical products.

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