adesso SE JANUS HENDERSON GROUP Ltd, St. Helier, Jersey

Language:EnglishDE

adesso SE
adesso SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution
11.08.2026 / 10:59 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:	adesso SE
Street:	Adessoplatz 1
Postal code:	44269
City:	Dortmund Germany
Legal Entity Identifier (LEI):	529900KOICE97ZSA1O52

2. Reason for notification

	Acquisition/disposal of shares with voting rights
	Acquisition/disposal of instruments
	Change of breakdown of voting rights
X	Other reason: Notification was triggered based on the submission of an independence declaration

3. Details of person subject to the notification obligation

Legal entity: JANUS HENDERSON GROUP Ltd
City of registered office, country: St. Helier, Jersey

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:

30 Jun 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 %	6528220
Previous notification	3.02 %	0.00 %	3.02 %	/

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)
DE000A0Z23Q5	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:

This notification results from a group restructuring as a result of go-private transaction. JANUS HENDERSON GROUP Ltd previously operated under the name JANUS HENDERSON GROUP PLC.

Date

10 Aug 2026

11.08.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.

Language:	English
Company:	adesso SE
	Adessoplatz 1
	44269 Dortmund
	Germany
Internet:	www.adesso-group.de
LEI Code:	529900KOICE97ZSA1O52


End of News	EQS News Service

2380634 11.08.2026 CET/CEST