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

Notification of Major Holdings

1. Details of issuer

Name:	All for One Group SE
Street:	Rita-Maiburg-Straße 40
Postal code:	70794
City:	Filderstadt-Bernhausen Germany
Legal Entity Identifier (LEI):	529900GB6FMY3QJLBM61

2. Reason for notification

X	Acquisition/disposal of shares with voting rights
X	Acquisition/disposal of instruments
	Change of breakdown of voting rights
	Other reason:

3. Details of person subject to the notification obligation

Legal entity: VINCI S.A. City of registered office, country: Nanterre, France

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

VINCI Energies Deutschland Enterprise Solutions AcquiCo SE

5. Date on which threshold was crossed or reached:

16 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 WpHG
New	5.63 %	54.66 %	60.30 %	4,982,000
Previous notification	0 %	0 %	0 %	/

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)
DE0005110001	0	280,559	0.0 %	5.63 %
Total	280,559		5.63 %

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	0.0 %
		Total	0	0.0 %

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 Undertakings			Physical	2,723,388	54.66 %
			Total	2,723,388	54.66 %

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)
- VINCI S.A.	%	%	%
- VINCI Energies S.A.	%	%	%
- VINCI Energies Deutschland Enterprise Solutions Holding SE	%	%	%
- VINCI Energies Deutschland Enterprise Solutions AcquiCo SE	5.63 %	54.66 %	60.30 %

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

17 Jul 2026