Siltronic AG — Governance Information 2021

Jul 1, 2021

DECLARATION OF CONFORMITY with the German Corporate Governance Code pursuant to Sec. 161 of the German Stock Corporation Act

The Executive Board and Supervisory Board of Siltronic AG hereby declare the following with regard to the recommendations of the "Government Commission on the German Corporate Governance Code" ("Code"):

Siltronic AG has complied with the recommendations of the Code in the version dated December 16, 2019, with the exception of the deviations set out and explained below since issuing its last declaration of conformity on September 24, 2020, and will continue to comply with the Code with the deviations specified:

a) Membership in the Executive Board and Chairman of the Supervisory Board (Sec. C.5)

The Code recommends that a member of an Executive Board shall not accept the chairmanship in a Supervisory Board of a listed company outside the Group. This is justified in particular by the workload involved in performing those functions. The Chairman of the Supervisory Board of Siltronic AG, Dr. Ohler, is also a member of the Executive Board of Wacker Chemie AG, thus deviating from this recommendation. In principle, we welcome the Code's goal of preventing the accumulation of activities so that sufficient time can be allocated to the work of the Supervisory Board. However, Dr. Ohler has proven in the past that for him the performance of both tasks can be very well combined in terms of time and organization.

b) Independence of the Chairman of the Supervisory Board (Sec. C.10)

According to the Code, the Chairman of the Supervisory Board shall be independent of the Company. As a member of the Executive Board of Wacker Chemie AG, the Chairman of the Supervisory Board, Dr. Ohler, holds a leading position for a supplier of Siltronic AG with whom material business relations exist. According to the Code, this should be an indication of a lack of independence. In our opinion, the business relationship does not prevent him from effectively performing the role of Chairman of the Supervisory Board. In accordance with the legal requirements, the Company has established an internal procedure to regularly evaluate whether the transactions with Wacker Chemie AG are conducted in the ordinary course of business and at arm's length. In order to avoid even the appearance of a conflict of interest, the Chairman of the Supervisory Board does not participate in resolutions concerning the business relationship between Wacker Chemie AG and Siltronic AG. The handling of conflicts of interest is reported in the Supervisory Board report.

Munich, 27 July 2021

Siltronic AG