AUTO1 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:	AUTO1 Group SE
Street:	Bergmannstraße 72
Postal code:	10961
City:	Berlin Germany
Legal Entity Identifier (LEI):	391200S2LPXG5ZD5G304

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: Morgan Stanley City of registered office, country: Wilmington, Delaware, United States of America (USA)

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

Morgan Stanley & Co. LLC

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	13.27 %	11.78 %	25.05 %	221663468
Previous notification	12.03 %	11.24 %	23.27 %	/

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)
DE000A2LQ884	0	29414758	0 %	13.27 %
Total	29414758		13.27 %

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 %
Equity Call Option	18.12.2026	at any time	600000	0.27 %
Right of recall over securities lending agreements	at any time	at any time	3557048	1.6 %
		Total	4157048	1.88 %

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 %
Equity Swap	From 25.11.2026 to 04.11.2030	at any time	Cash	21947524	9.9 %
			Total	21947524	9.9 %

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)
Morgan Stanley	%	%	%
Morgan Stanley Capital Management, LLC	%	%	%
Morgan Stanley Domestic Holdings, LLC	%	%	%
Morgan Stanley Capital Services LLC	%	6.86 %	6.86 %
-	%	%	%
Morgan Stanley	%	%	%
Morgan Stanley Capital Management, LLC	%	%	%
Morgan Stanley & Co. LLC	13.12 %	%	14.36 %
-	%	%	%
Morgan Stanley	%	%	%
Morgan Stanley International Holdings Inc.	%	%	%
Morgan Stanley International Limited	%	%	%
Morgan Stanley Investments (UK)	%	%	%
Morgan Stanley & Co. International plc	%	%	%
-	%	%	%
Morgan Stanley	%	%	%
Morgan Stanley Capital Management, LLC	%	%	%
Morgan Stanley & Co. LLC	13.12 %	%	14.36 %
Prime Dealer Services Corp.	%	%	%

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

22 Jul 2026