Dr. Klaus Weyer
Graduate physicist, management consultant, born 1948, resident in Penzberg, Germany
-> Chairman
-> Independent member of the Supervisory Board, appointed until 2027
-> Chairman of the audit committee, financial expert pursuant to Section 100 (5) AktG
Dr. Klaus Weyer studied physics at the University of Cologne. At Ludwig-Maximilians-Universität in Munich he earned his doctorate. He went to work as management consultant in the field of microelectronics for small and medium-sized enterprises. In 1984 he co-founded Elmos and worked for the Company initially as its managing director and from 1999 as member and then chairman of the Company’s Management Board. Since 2006 he has been a member of the Supervisory Board of Elmos, since May 2016 vice chairman and since May 2017 chairman of the Supervisory Board.
Disclosures pursuant to Section 125 (1) sentence 5 AktG: Dr. Klaus Weyer is neither a member of another supervisory board nor of a comparable domestic or international supervisory body.
Prof. Dr. Günter Zimmer
Graduate physicist, university professor, retired, born 1940, resident in Duisburg, Germany
-> Vice Chairman and Honorary Chairman for life
-> Independent member of the Supervisory Board, appointed until 2027
Prof. Dr. Günter Zimmer studied physics in Darmstadt. After earning his doctorate at Technische Universität München he worked for Siemens AG in Munich. In 1973 he transferred to Universität Dortmund as senior engineer and habilitated there in the field of semiconductor technology in 1982. From 1984 to 2005 he was a professor at Gerhard-Mercator-Universität Duisburg (since 2003 Universität Duisburg/Essen). He also headed the Fraunhofer Institute for Microelectronic Circuits and Systems in Duisburg until 2006. Prof. Dr. Günter Zimmer is a co-founder of Elmos; he had been a member of the Advisory Board since the formation of EL-MOS Elektronik in MOS-Technologie GmbH and has been chairman of the Supervisory Board since the transformation into Elmos in 1999. Since 2017 Prof. Dr. Zimmer has been honorary chairman and vice chairman of the Supervisory Board.
Disclosures pursuant to Section 125 (1) sentence 5 AktG:Prof. Dr. Günter Zimmer is neither a member of another supervisory board nor of a comparable domestic or international supervisory body.
Guido Meyer
Graduate engineer (FH), consultant, born 1966, resident in Schwerte, Germany
-> Appointed until 2027
-> Member of the audit committee, financial expert pursuant to Section 100 (5) AktG
Guido Meyer studied electrical engineering at Dortmund University of Applied Sciences and Arts and joined Elmos in 1995. There, he was initially responsible for the semiconductor testing division and, starting in 2012, headed the Frontend Wafer Fab division, including process development. From 2017 until the end of 2024, he served on the Management Board of Elmos Semiconductor AG/SE and was responsible for overall production and the global supply chain. He subsequently served as a consultant to Elmos until March 2026. In total, Guido Meyer worked for Elmos for over 30 years.
Disclosures pursuant to Section 125 (1) sentence 5 AktG: Guido Meyer is neither a member of another supervisory board nor of a comparable domestic or international supervisory body.
Tobias Weyer
Graduate business administrator, consultant, born 1984, resident in Schwerte, Germany
-> Independent member of the Supervisory Board, appointed until 2027
-> Financial expert pursuant to Section 100 (5) AktG
Tobias Weyer studied International Business Management at the International School of Management (ISM) in Dortmund, as well as in French-speaking Switzerland and New Zealand. He has been with Elmos since 2011 – initially in the areas of Corporate Development and Controlling, and from 2020 to 2026 as Head of Market Communications. In this role, he was responsible for digital corporate and product communications, among other things, and helped shape the brand strategy. Since March 2026, Tobias Weyer has been working as an independent consultant. In total, Tobias Weyer worked in an operational capacity for Elmos for over 15 years.
Information pursuant to Section 125 (1) sentence 5 AktG: Dr. Volkmar Tanneberger is neither a member of another supervisory board nor of a comparable domestic or international supervisory body.
Thomas Lehner
Graduate engineer, principal engineer, born 1961, resident in Dortmund, Germany
-> Employee representative, appointed until 2027
Thomas Lehner completed his studies of electrical engineering at the University of Dortmund in 1988. He has been working for Elmos, initially as a student, since 1986. He worked as a manager engineering backend in the production test division for many years and now works there as a principal engineer. Since 2011 he has been a member of the Supervisory Board of Elmos as employee representative.
Disclosures pursuant to Section 125 (1) sentence 5 AktG: Thomas Lehner is neither a member of another supervisory board nor of a comparable domestic or international supervisory body.
Sven-Olaf Schellenberg
Graduate physicist, project manager in technology and foundry management, born 1971, resident in Dortmund, Germany
-> Employee representative, appointed until 2027
Sven-Olaf Schellenberg studied physics at the University of Dortmund. He has been working for Elmos since 1997. He works as a project manager in technology and foundry management. Since 2011 he has been a member of the Supervisory Board of Elmos as employee representative.
Disclosures pursuant to Section 125 (1) sentence 5 AktG: Sven-Olaf Schellenberg is neither a member of another supervisory board nor of a comparable domestic or international supervisory body.
