DGAP-Stimmrechtsanteile: AIXTRON SE

DGAP-PVR: AIXTRON SE: Release according to Article 26, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution

AIXTRON SE

04.02.2016 19:20

Dissemination of a Voting Rights Announcement, transmitted by DGAP - a service of EQS Group AG. The issuer is solely responsible for the content of this announcement. ---------------------------------------------------------------------------

Notification of Major Holdings

1. Details of issuer

AIXTRON SE Dornkaulstraße 2 52134 Herzogenrath Germany

2. Reason for notification

X Acquisition/disposal of shares with voting rights X Acquisition/disposal of instruments Change of breakdown of voting rights X Other reason: consequent increase of Trading Book holdings above 5%

3. Details of person subject to the notification obligation

Name: City and country of registered office: UBS Group AG Zurich Switzerland

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

26 Jan 2016

6. Total positions

% of voting % of voting rights total of total number rights attached through instruments both in % of voting to shares (total (total of 7.b.1 + (7.a. + rights of of 7.a.) 7.b.2) 7.b.) issuer Result- 0.27 % 5.26 % 5.53 % 112720355 ing situat- ion Previo- 0.15 % 0.37 % 0.52 % / us notifi- cation

7. Notified details of the resulting situation a. Voting rights attached to shares (Sec.s 21, 22 WpHG)

ISIN absolute in % direct (Sec. indirect (Sec. direct (Sec. indirect 21 WpHG) 22 WpHG) 21 WpHG) (Sec. 22 WpHG) DE000A0WMPJ6 0 300587 0 % 0.27 % Total 300587 0.27 %

b.1. Instruments according to Sec. 25 para. 1 No. 1 WpHG

Type of instrument Expiration Exercise or Voting Voting or maturity conversion rights rights date period absolute in % Right to recall lent at any time 979160 0.87 % shares Right to substitute at any time 2861755 2.54 % shares delivered as collaterals Equity Options from 238800 0.21 % 18/3/2016 to 16/12/2016 Total 4079715 3.62 %

b.2. Instruments according to Sec. 25 para. 1 No. 2 WpHG

Type of Expiration Exercise or Cash or Voting Voting instrume- or maturity conversion physical rights rights nt date period settlement absolute in % Equity from Cash 1848128 1.64 % Swaps 2/12/2016 to 9/1/2019 Total 1848128 1.64 %

8. Information in relation to the person subject to the notification obligation

Person subject to the notification obligation is not controlled and does itself not control any other undertaking(s) holding directly or indirectly 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 % of voting rights Total of both rights (if at through instruments (if (if at least least held 3% or at least held 5% or held 5% or more) more) more) UBS Group AG % % % UBS AG % % 5.03 % UBS Americas % % % Holding LLC UBS Americas % % % Inc. UBS Financial % % % Services Inc. UBS Group AG % % % UBS AG % % 5.03 % UBS Asset % % % Management (Australia) Ltd UBS Group AG % % % UBS AG % % 5.03 % UBS Asset % % % Management Holding (No. 2) Ltd UBS Asset % % % Management Holding Ltd UBS Asset % % % Management (UK) Ltd UBS Group AG % % % UBS AG % % 5.03 % UBS Fund % % % Management (Luxembourg) S.A. UBS Group AG % % % UBS AG % % 5.03 % UBS Fund % % % Management (Switzerland) AG UBS Group AG % % % UBS AG % % 5.03 % UBS % % % Switzerland AG

9. In case of proxy voting according to Sec. 22 para. 3 WpHG

Date of general meeting: Holding position after general meeting: % (equals voting rights)

04.02.2016 The DGAP Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases. Media archive at www.dgap-medientreff.de and www.dgap.de

--------------------------------------------------------------------------- Language: English Company: AIXTRON SE Dornkaulstraße 2 52134 Herzogenrath Germany Internet: www.aixtron.com End of Announcement DGAP News-Service ---------------------------------------------------------------------------