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

15.07.2026 / 17:07 CET/CEST

Dissemination of a Voting Rights Announcement transmitted by - a service of .

The issuer is solely responsible for the content of this announcement.

Notification of Major Holdings1. Details of issuer
Name:PSI Software SEStreet:Dircksenstraße 42-44Postal code:10178City:BerlinGermanyLegal Entity Identifier (LEI):529900OS5AIRXC3T2J37
2. Reason for notification
 Acquisition/disposal of shares with voting rightsXAcquisition/disposal of instruments Change of breakdown of voting rights Other reason:
3. Details of person subject to the notification obligation

Legal entity: Warburg Pincus (Bermuda) Private Equity GP Ltd.City of registered office, country: Hamilton, Bermuda

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

Zest Bidco GmbH

5. Date on which threshold was crossed or reached:

13 Jul 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 WpHGNew9.99 %42.83 %52.82 %15697366Previous notification9.99 %25.06 %35.05 %/
7. Details on total positions a. Voting rights attached to shares (Sec. 33, 34 WpHG)
ISINAbsoluteIn % Direct (Sec. 33 WpHG)Indirect (Sec. 34 WpHG)Direct (Sec. 33 WpHG)Indirect (Sec. 34 WpHG)DE000A0Z1JH9015680290.00 %9.99 %Total15680299.99 %
b.1. Instruments according to Sec. 38 (1) no. 1 WpHG
Type of instrumentExpiration or maturity dateExercise or conversion periodVoting rights absoluteVoting rights in %00.00 %  Total00 %
b.2. Instruments according to Sec. 38 (1) no. 2 WpHG
Type of instrumentExpiration or maturity dateExercise or conversion periodCash or physical settlementVoting rights absoluteVoting rights in %Share purchase agreementn/an/aPhysical362265323.08 %Total return swapn/an/aCash2385991.52 %Share purchase agreementn/an/aPhysical723470.46 %Share purchase agreementn/an/aPhysical278999917.77 %   Total672359842.83 %
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.).XFull 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)Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus (Europa) Global Growth 14 (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 1 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus (Europa) Global Growth 14 (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 2 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus (Callisto) Global Growth 14 (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 1 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus (Callisto) Global Growth 14 (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 2 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus Global Growth 14-B (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 1 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus Global Growth 14-B (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 2 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus Global Growth 14-E (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 1 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus Global Growth 14-E (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 2 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %WP Global Growth 14 Partners (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 1 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %WP Global Growth 14 Partners (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 2 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus Global Growth 14 Partners (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 1 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %- % % %Warburg Pincus (Bermuda) Private Equity GP Ltd. % % %Warburg Pincus Partners II (Cayman), L.P. % % %Warburg Pincus (Cayman) Global Growth 14 GP LLC % % %Warburg Pincus (Cayman) Global Growth 14 GP, L.P. % % %Warburg Pincus Global Growth 14 Partners (Cayman), L.P. % % %WP GG 14 Investments Holdings Coöperatief U.A. % % %WP GG 14 Investments Holdings B.V. % % %WP Zest Holdings B.V. % % %Zest Aggregator B.V. % % %Zest Investments B.V. % % %Zest Topco 2 GmbH % % %Zest Holdco GmbH % % %Zest Midco GmbH % % %Zest Bidco GmbH9.99 %42.83 %52.82 %
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:

Shares that have been tendered in connection with the voluntary public takeover offer of Zest Bidco GmbH to the shareholders of PSI Software SE have not yet been delivered to Zest Bidco GmbH at the time the relevant threshold was crossed (13/07/2026) and are not notified in this voting rights notification. In this regard we refer to the publications of Zest Bidco GmbH pursuant to Sec. 23 WpÜG.

Date

15 Jul 2026

15.07.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.

Language:EnglishCompany:PSI Software SEDircksenstraße 42-4410178 BerlinGermanyInternet:www.psi.deLEI Code:529900OS5AIRXC3T2J37
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