Report of Foreign Issuer (6-k)

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of the
Securities Exchange Act of 1934

Commission File No. 000-51196

For the month of August, 2015

AIXTRON SE
(Translation of registrant’s name into English)

Dornkaulstr. 2
52134 Herzogenrath
Germany
(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ⊠

Form 40-F ⃞

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ⃞

No ⊠

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): N/A

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

Notification of voting rights pursuant to Art. 25a WpHG We received the following notification pursuant to Art. 25a WpHG on August 24, 2015:

1. Listed company: AIXTRON SE, Dornkaulstraße 2, 52134 Herzogenrath, Germany

2. Notifier: UBS Group AG, Zurich, Switzerland

3. Triggering event: Exceeding Threshold

4. Threshold(s) crossed or reached: 10%

5. Date at which the threshold is crossed or reached: 18.08.2015

6. Total amount of voting rights: 10.01% (equals 11287969 voting rights) calculated from the following total number of voting rights issued: 112715180

7. Detailed information on the voting rights proportion:

Voting rights proportion based on financial/other instruments pursuant to Art. 25a, Sec. 1 WpHG: 3.71% (equals 4180234 voting rights) thereof held indirectly: 3.71% (equals 4180234 voting rights)

Voting rights proportion based on financial/other instruments pursuant to Art. 25 WpHG: 1.52% (equals 1710145 voting rights) thereof held indirectly: 1.52% (equals 1710145 voting rights)

Voting rights pursuant to Art. 21, 22 WpHG: 4.79% (equals 5397590 voting rights)

8. Detailed information on financial/other instruments pursuant to Art. 25a WpHG:

Chain of controlled undertakings: UBS AG

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 06.06.2016

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 30.09.2016

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 20.12.2016

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 13.07.2017

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 01.08.2017

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 03.11.2017

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 16.01.2018

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 05.02.2018

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 19.03.2018

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 02.07.2018

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 02.12.2016

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 13.12.2016

ISIN or name/description of the financial/other instrument: Equity Swap Maturity: Expiration date: 19.07.2017

ISIN or name/description of the financial/other instrument: Physically Settled Short PUT Option Maturity:
Expiration date: 18.12.2015

Furthermore we received the following notification pursuant to Art. 25a WpHG on August 24, 2015:

1. Listed company: AIXTRON SE, Dornkaulstraße 2, 52134 Herzogenrath, Germany

2. Notifier: UBS AG, Zurich, Switzerland

3. Triggering event: Exceeding Threshold

4. Threshold(s) crossed or reached: 10%

5. Date at which the threshold is crossed or reached: 18.08.2015

6. Total amount of voting rights: 10.01% (equals 11287969 voting rights) calculated from the following total number of voting rights issued: 112715180

7. Detailed information on the voting rights proportion:

Voting rights proportion based on financial/other instruments pursuant to Art. 25a, Sec. 1 WpHG: 3.71% (equals 4180234 voting rights) thereof held indirectly: 0.00% (equals 0 voting rights)

Voting rights proportion based on financial/other instruments pursuant to Art. 25 WpHG: 1.52% (equals 1710145 voting rights) thereof held indirectly: 0.20% (equals 229901 voting rights)