EQS — PVR: 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

EQS Voting Rights Announcement: 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 25.09.2026 / 18:29 CET/CEST Dissemination of a Voting Rights Announcement transmitted by 1 EQS News — a service of 2 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 ┌───┬───────────────────────────────────────────────────┐ │ │ Acquisition/disposal of shares with voting rights │ ├──