Press Release: Notification in accordance with section 26 paragraph 1 WpHG

ADVA Optical Networking SE / Notification in accordance with section 26 paragraph 1 WpHG . Processed and transmitted by Nasdaq OMX Corporate Solutions. The issuer is solely responsible for the content of this announcement.

We have received the following notifications of voting rights pursuant to section 21 paragraph 1

of the German Securities Trading Act (WpHG):

Notification pursuant to section 21 paragraph 1 WpHG

1. Listed company:

ADVA Optical Networking SE Maerzenquelle 1-3, 98617 Meiningen-Dreissigacker, Germany

2. Notifier: FMR LLC, Boston, USA

3. Triggering event: Below threshold

4. Threshold (s) crossed or reached: 3%

5. Date at which the threshold is crossed or reached: May 20, 2014

6. Voting rights:

Total amount: 2.94% (1413983 voting rights)

Held indirectly: 2.94% (1413983 voting rights)

attributable to the notifier pursuant to section 22 paragraph 1 sentence 1 no 6 WpHG, in connection with sentence 2

ADVA Optical Networking SE

Maerzenquelle 1-3, 98617 Meiningen-Dreissigacker, Germany

t +49 3693 450 0, f +49 3963 450 499

investor-relations@advaoptical.com, www.advaoptical.com

Let's ADVANCE

This announcement is distributed by NASDAQ OMX Corporate Solutions on behalf of NASDAQ OMX Corporate Solutions clients.

The issuer of this announcement warrants that they are solely responsible for the content, accuracy and originality of the information contained therein.

Source: ADVA Optical Networking SE via Globenewswire

HUG#1787378

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ADVA Optical Networking SE

Campus Martinsried, Fraunhoferstr. 9a Martinsried/Munich Germany

WKN: 510300;ISIN: DE0005103006;

Listed: Freiverkehr in Hanseatische Wertpapierbörse zu Hamburg,

Freiverkehr in Börse Berlin,

Freiverkehr in Börse Düsseldorf,

Freiverkehr in Bayerische Börse München,

Freiverkehr in Niedersächsische Börse zu Hannover,

Prime Standard in Frankfurter Wertpapierbörse,

Regulierter Markt in Frankfurter Wertpapierbörse;

http://www.advaoptical.com (END) Dow Jones Newswires

   May 20, 2014 13:54 ET (17:54 GMT)- - 01 54 PM EDT 05-20-14