Voting rights Announcements | 20 October 2025 16:44

Warburg Pincus (Bermuda) Private Equity GP Ltd., Hamilton, Bermuda

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

20.10.2025 / 16:44 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
	Acquisition/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:

14 Oct 2025

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	5.01 %	28.52 %	33.53 %	15697366
Previous notification	4.55 %	28.52 %	33.07 %	/

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)
DE000A0Z1JH9	0	786187	0.00 %	5.01 %
Total	786187		5.01 %

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 %
Irrevocable	n/a	n/a	Physical	854252	5.44 %
Share purchase agreement	n/a	n/a	Physical	3622653	23.08 %
			Total	4476905	28.52 %

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)
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 Investments B.V.	%	%	%
Zest Midco GmbH	%	%	%
Zest Bidco GmbH	5.01 %	28.52 %	33.53 %
–	%	%	%
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 Investments B.V.	%	%	%
Zest Midco GmbH	%	%	%
Zest Bidco GmbH	5.01 %	28.52 %	33.53 %
–	%	%	%
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 Investments B.V.	%	%	%
Zest Midco GmbH	%	%	%
Zest Bidco GmbH	5.01 %	28.52 %	33.53 %
–	%	%	%
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 Investments B.V.	%	%	%
Zest Midco GmbH	%	%	%
Zest Bidco GmbH	5.01 %	28.52 %	33.53 %
–	%	%	%
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 Investments B.V.	%	%	%
Zest Midco GmbH	%	%	%
Zest Bidco GmbH	5.01 %	28.52 %	33.53 %
–	%	%	%
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 Investments B.V.	%	%	%
Zest Midco GmbH	%	%	%
Zest Bidco GmbH	5.01 %	28.52 %	33.53 %

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

20 Oct 2025

20.10.2025 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.
View original content: EQS News

Language:	English
Company:	PSI Software SE
	Dircksenstraße 42-44
	10178 Berlin
	Germany
Internet:	www.psi.de

End of News EQS News Service

2215730  20.10.2025 CET/CEST