PSI Software SE — Major Shareholding Notification 2026

Apr 15, 2026

News Details Voting rights Announcements | 15 April 2026 08:53 Morgan Stanley, Wilmington, Delaware, United States of America (USA) PSI Software SE PSI Software SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution 15.04.2026 / 08:53 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: PSI Software SE Street: Dircksenstraße 42-44 Postal code: 10178 City: Berlin Germany Legal Entity Identifier (LEI): 529900OS5AIRXC3T2J37 2. Reason for notification X Acquisition/disposal of shares with voting rights X Acquisition/disposal of instruments Change of breakdown of voting rights Other reason: 3. Details of person subject to the notification obligation Legal entity: Morgan Stanley City of registered office, country: Wilmington, Delaware, United States of America (USA) 4. Names of shareholder(s) holding directly 3% or more voting rights, if different from 3. Morgan Stanley & Co. LLC 5. Date on which threshold was crossed or reached: 10 Apr 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 12.49 % 2.2 % 14.69 % 15697366 Previous notification 12.85 % 2.55 % 15.4 % / 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) DE000A0Z1JH9 0 1960976 0 % 12.49 % Total 1960976 12.49 % 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 % Right of recall over securities lending agreements at any time at any time 24390 0.16 % Total 24390 0.16 % 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 % Equity Swap 04.11.2030 at any time Cash 320352 2.04 % Total 320352 2.04 % 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) Morgan Stanley % % % Morgan Stanley Capital Management, LLC % % % Morgan Stanley Domestic Holdings, LLC % % % Morgan Stanley Capital Services LLC % % % – % % % Morgan Stanley % % % Morgan Stanley Capital Management, LLC % % % Morgan Stanley & Co. LLC 9.88 % % 9.93 % – % % % Morgan Stanley % % % Morgan Stanley International Holdings Inc. % % % Morgan Stanley International Limited % % % Morgan Stanley Investments (UK) % % % Morgan Stanley & Co. International plc % % % – % % % Morgan Stanley % % % Morgan Stanley Capital Management, LLC % % % Morgan Stanley & Co. LLC 9.88 % % 9.93 % Prime Dealer Services Corp. % % % 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 14 Apr 2026 15.04.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases. Language: English Company: PSI Software SE Dircksenstraße 42-44 10178 Berlin Germany Internet: www.psi.de End of News EQS News Service 2308540 15.04.2026 CET/CEST