AIXTRON SE — Major Shareholding Notification 2026

Apr 14, 2026

News Details Voting rights Announcements | 14 April 2026 16:50 SOCIETE GENERALE SA, PARIS, France AIXTRON SE AIXTRON SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution 14.04.2026 / 16:50 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: AIXTRON SE Street: Dornkaulstraße 2 Postal code: 52134 City: Herzogenrath Germany Legal Entity Identifier (LEI): 5299004UJ4D51M25LD67 2. Reason for notification Acquisition/disposal of shares with voting rights Acquisition/disposal of instruments Change of breakdown of voting rights X Other reason: Applying of trading book exemption according to sec. 36 para. 1 WpHG. Delta adjusted on Warrant Cash Settlement 3. Details of person subject to the notification obligation Legal entity: SOCIETE GENERALE SA City of registered office, country: PARIS, France 4. Names of shareholder(s) holding directly 3% or more voting rights, if different from 3. 5. Date on which threshold was crossed or reached: 27 March 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 0.00 % 0.00 % 0.00 % 113456120 Previous notification 0.02 % 5.05 % 5.07 % / 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) DE000A0WMPJ6 0 0 0.00 % 0.00 % Total 0 0.00 % 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 X 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.). 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) 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 31 March 2026 14.04.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases. Language: English Company: AIXTRON SE Dornkaulstraße 2 52134 Herzogenrath Germany Internet: www.aixtron.com End of News EQS News Service 2308282 14.04.2026 CET/CEST