ATOSS Software SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution

ATOSS Software SE / DE0005104400

EQS Voting Rights Announcement: ATOSS Software SE


04.05.2026 / 11:28 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.

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Notification of Major Holdings

1. Details of issuer

Name:	ATOSS Software SE
Street:	Rosenheimer Str. 141 h
Postal code:	81671
City:	München Germany
Legal Entity Identifier (LEI):	529900Q9G9280ADNOA39

2. Reason for notification

	Acquisition/disposal of shares with voting rights
	Acquisition/disposal of instruments
	Change of breakdown of voting rights
X	Other reason: voluntary group announcement due to threshold notification of a subsidiary

3. Details of person subject to the notification obligation

Natural person (first name, surname): Andreas F. J. Obereder
Date of birth: 13 Oct 1958

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

AOB Portfolio One GmbH & Co. KG

5. Date on which threshold was crossed or reached:

01 May 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	23.90 %	0.00 %	23.90 %	15906272
Previous notification	21.59 %	0 %	21.59 %	/

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)
DE0005104400	0	3801214	0.00 %	23.90 %
Total	3801214		23.90 %

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

	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)
-Andreas F.J. Obereder	%	%	%
-AOB Invest GmbH	%	%	%
-AOB Portfolio One GmbH & Co. KG	23.90 %	%	23.90 %

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

04 May 2026

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04.05.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.
View original content: EQS News

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Language:	English
Company:	ATOSS Software SE
	Rosenheimer Str. 141 h
	81671 München
	Germany
Internet:	www.atoss.com

End of News	EQS News Service

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2320552  04.05.2026 CET/CEST