On October 25, 2010, Capital Group Companies, Inc., Los Angeles, CA, USA has informed us according to

AIXTRON AG  / Release of an announcement according to Article 21, Section 1 of the WpHG [the German Securities Trading Act] (share)

25.10.2010 13:29

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


On October 25, 2010, Capital Group Companies, Inc., Los Angeles, CA, USA
has informed us according to Article 21, Section 1 of the WpHG that via
shares its Voting Rights on AIXTRON AG, Herzogenrath, Deutschland, ISIN:
DE000A0WMPJ6, WKN: A0WMPJ, have exceeded the 3% threshold of the Voting
Rights on May 19, 2010 and on that day amounted to 3.30% (this corresponds
to 3324805 Voting Rights).
According to Article 22, Section 1, Sentence 1, No. 6 in connection with
sentence 2 and sentence 3 of the WpHG, 3.30% of the Voting Rights (this
corresponds to 3324805 Voting Rights) is to be attributed to the company.

On October 20, 2010, Capital Group Companies, Inc., Los Angeles, CA, USA
has informed us according to Article 21, Section 1 of the WpHG that via
shares its Voting Rights on AIXTRON AG, Herzogenrath, Deutschland, ISIN:
DE000A0WMPJ6, WKN: A0WMPJ, have fallen below the 3% threshold of the Voting
Rights on October 15, 2010 and on that day amounted to 2.87% (this
corresponds to 2896348 Voting Rights).
According to Article 22, Section 1, Sentence 1, No. 6 in connection with
sentence 2 and sentence 3 of the WpHG, 2.87% of the Voting Rights (this
corresponds to 2896348 Voting Rights) is to be attributed to the company.

On October 20, 2010, Capital Group International, Inc., Los Angeles, CA,
USA has informed us according to Article 21, Section 1 of the WpHG that via
shares its Voting Rights on AIXTRON AG, Herzogenrath, Deutschland, ISIN:
DE000A0WMPJ6, WKN: A0WMPJ, have fallen below the 3% threshold of the Voting
Rights on October 15, 2010 and on that day amounted to 2.87% (this
corresponds to 2896348 Voting Rights).
According to Article 22, Section 1, Sentence 1, No. 6 in connection with
sentence 2 and sentence 3 of the WpHG, 2.87% of the Voting Rights (this
corresponds to 2896348 Voting Rights) is to be attributed to the company.



25.10.2010 DGAP's 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 AG
              Kaiserstr. 98
              52134 Herzogenrath
              Deutschland
Internet:     www.aixtron.com
 
End of Announcement                             DGAP News-Service
 
---------------------------------------------------------------------------

Our registered trademarks: AIXACT®, AIXTRON®, Atomic Level Solutions®, Close Coupled Showerhead®, CRIUS®, EXP®, EPISON®, Gas Foil Rotation®, Optacap™, OVPD®, Planetary Reactor®, PVPD®, STExS®, Trijet®