Siltronic AG Dr. Alexander Wacker Familiengesellschaft mit beschränkter Haftung, Munich, Germany

Language:EnglishDE

Siltronic AG
Siltronic AG: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution
24.09.2026 / 16:27 CET/CEST
Dissemination of a Voting Rights Announcement transmitted by EQS News – a service of EQS Group.
The issuer is solely responsible for the content of this announcement.

Notification of Major Holdings
1. Details of issuer

Name:	Siltronic AG
Street:	Einsteinstr. 172
Postal code:	81677
City:	Munich Germany
Legal Entity Identifier (LEI):	5299003NKV26NNGHHR90

2. Reason for notification

X	Acquisition/disposal of shares with voting rights
	Acquisition/disposal of instruments
	Change of breakdown of voting rights
	Other reason:

3. Details of person subject to the notification obligation

Legal entity: Dr. Alexander Wacker Familiengesellschaft mit beschränkter Haftung
City of registered office, country: Munich, Germany

4. Names of shareholder(s)
holding directly 3% or more voting rights, if different from 3.

Wacker Chemie AG

5. Date on which threshold was crossed or reached:

22 Sep 2026

6. Total positions

	% of voting rights attached to shares (total of 7.a.)	% of voting rights through instruments (total of 7.b.1 + 7.b.2)	Total of both in % (7.a. + 7.b.)	Total number of voting rights pursuant to Sec. 41 WpHG
New	14.97 %	0.00 %	14.97 %	33000000
Previous notification	23.83 %	0.00 %	23.83 %	/

7. Details on total positions
a. Voting rights attached to shares (Sec. 33, 34 WpHG)

ISIN	Absolute		In %
	Direct (Sec. 33 WpHG)	Indirect (Sec. 34 WpHG)	Direct (Sec. 33 WpHG)	Indirect (Sec. 34 WpHG)
DE000WAF3001	0	4939000	0.00 %	14.97 %
Total	4939000		14.97 %

b.1. Instruments according to Sec. 38 (1) no. 1 WpHG

Type of instrument	Expiration or maturity date	Exercise or conversion period	Voting rights absolute	Voting rights in %
			0	0.00 %
		Total	0	0.00 %

b.2. Instruments according to Sec. 38 (1) no. 2 WpHG

Type of instrument	Expiration or maturity date	Exercise or conversion period	Cash or physical settlement	Voting rights absolute	Voting rights in %
				0	0.00 %
			Total	0	0.00 %

8. Information in relation to the person subject to the notification obligation

	Person subject to the notification obligation is not controlled nor does it control any other undertaking(s) that directly or indirectly hold(s) an interest in the (underlying) issuer (1.).
X	Full chain of controlled undertakings starting with the ultimate controlling natural person or legal entity:

Name	% of voting rights (if at least 3% or more)	% of voting rights through instruments (if at least 5% or more)	Total of both (if at least 5% or more)
Dr. Alexander Wacker Familiengesellschaft mit beschränkter Haftung	%	%	%
Wacker Chemie AG	14.97 %	%	14.97 %

9. In case of proxy voting according to Sec. 34 para. 3 WpHG
(only in case of attribution of voting rights in accordance with Sec. 34 para. 1 sent. 1 No. 6 WpHG)
Date of general meeting:
Holding total positions after general meeting (6.) after annual general meeting:

Proportion of voting rights	Proportion of instruments	Total of both
%	%	%

10. Other explanatory remarks:

Date

24 Sep 2026

24.09.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.

Language:	English
Company:	Siltronic AG
	Einsteinstr. 172
	81677 Munich
	Germany
Internet:	www.siltronic.com
LEI Code:	5299003NKV26NNGHHR90


End of News	EQS News Service

2404994 24.09.2026 CET/CEST