EQS-PVR: AIXTRON SE: Release according to Art...

EQS Voting Rights Announcement: AIXTRON SE
AIXTRON SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution
28.08.2026 / 18:00 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:	AIXTRON SE
Street:	Dornkaulstraße 2
Postal code:	52134
City:	Herzogenrath Germany
Legal Entity Identifier (LEI):	5299004UJ4D51M25LD67

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: The Goldman Sachs Group, Inc.
City of registered office, country: Wilmington, DE, United States of America (USA)

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

Goldman Sachs Asset Management, L.P.

5. Date on which threshold was crossed or reached:

21 Aug 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	3.28 %	6.62 %	9.90 %	113456120
Previous notification	3.39 %	6.70 %	10.08 %	/

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)
DE000A0WMPJ6	0	3719399	0 %	3.28 %
Total	3719399		3.28 %

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 %
Right To Recall	Open		4857400	4.28 %
Right Of Use	Open		1007033	0.89 %
Call Option	18.09.2026		60000	0.05 %
Convertible Bond	25.04.2031		289826	0.26 %
		Total	6214259	5.48 %

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 %
Call Option	06.11.2026		Cash	306	0.0003 %
Swap	29.07.2041		Cash	686830	0.61 %
Call Warrant	31.12.2030		Cash	608250	0.54 %
			Total	1295386	1.14 %

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)
The Goldman Sachs Group, Inc.	%	%	%
GSAM Holdings LLC	%	%	%
Goldman Sachs Asset Management, L.P.	3.16 %	%	%
Goldman Sachs Asset Management International Holdings L.L.C.	%	%	%
Goldman Sachs Asset Management Co., Ltd.	%	%	%
-	%	%	%
The Goldman Sachs Group, Inc.	%	%	%
GSAM Holdings LLC	%	%	%
Goldman Sachs Asset Management Holdings LLC	%	%	%
Goldman Sachs Asset Management UK Holdings I Ltd	%	%	%
Goldman Sachs Asset Management UK Holdings II Ltd	%	%	%
Goldman Sachs Asset Management Holdings I B.V. / Goldman Sachs Asset Management Holdings II B.V.	%	%	%
Goldman Sachs Asset Management Holdings B.V.	%	%	%
Goldman Sachs Asset Management International Holdings B.V.	%	%	%
Goldman Sachs Asset Management B.V.	%	%	%
-	%	%	%
The Goldman Sachs Group, Inc.	%	%	%
Goldman Sachs (UK) L.L.C.	%	%	%
Goldman Sachs Group UK Limited	%	%	%
Goldman Sachs International Bank	%	%	%
-	%	%	%
The Goldman Sachs Group, Inc.	%	%	%
Goldman Sachs Bank USA	%	%	%
Goldman Sachs Bank Europe SE	%	%	%
-	%	%	%
The Goldman Sachs Group, Inc.	%	%	%
Goldman Sachs & Co. LLC	%	%	%
-	%	%	%
The Goldman Sachs Group, Inc.	%	%	%
The Goldman Sachs Trust Company, National Association	%	%	%
The Goldman Sachs Trust Company of Delaware	%	%	%
-	%	%	%
The Goldman Sachs Group, Inc.	%	%	%
Goldman Sachs (UK) L.L.C.	%	%	%
Goldman Sachs Group UK Limited	%	%	%
Goldman Sachs International	%	%	%

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

27 Aug 2026

28.08.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.
View original content: EQS News

Language:	English
Company:	AIXTRON SE
	Dornkaulstraße 2
	52134 Herzogenrath
	Germany
Internet:	www.aixtron.com
LEI Code:	5299004UJ4D51M25LD67


End of News	EQS News Service

2390016 28.08.2026 CET/CEST