Ad-hoc notification pursuant to Article 17 of the Market-Abuse-Regulation (EU) No. 596/2014

ADVA Optical Networking SE: ADVA is applying for a segment change to the General Standard of the regulated market of Deutsche Börse

Munich, Germany, 18 April 2023.

Today, the management board of ADVA Optical Networking SE ("ADVA") has decided to file an application for the revocation of the admission of its shares to the Prime Standard of the Frankfurt Stock Exchange. The admission of the ADVA shares to the regulated market (General Standard) remains unaffected. The segment change and the associated discontinuation of the extended post-admission reporting obligations are intended to reduce complexity and cost.

The change to the General Standard will take effect three months after the publication of the revocation decision by the management of the Frankfurt Stock Exchange on the website of the German Stock Exchange (www.deutsche-boerse.com).

Disclaimer

To the extent any announcements in this document contain forward-looking statements, such statements do not represent facts and are characterized by the words "will", "expect", "believe", "estimate", "intend", "aim", "assume" or similar expressions. Such statements express the intentions, opinions or current expectations and assumptions of ADVA and the persons acting jointly with ADVA. Such forward-looking statements are based on current plans, estimates and forecasts, which ADVA and the persons acting jointly with ADVA have made to the best of their knowledge, but which they do not claim to be correct in the future. Forward-looking statements are subject to risks and uncertainties that are difficult to predict and usually cannot be influenced by ADVA or the persons acting jointly with ADVA . These expectations and forward-looking statements can turn out to be incorrect and the actual events or consequences may differ materially from those contained in or expressed by such forward-looking statements.

Notifying person and contact for Investors:

Steven Williams

t: +49 89 890 66 59 18

investor-relations@adva.com

Contact for press:

Gareth Spence

Tel.: +44 1904 69 93 58

public-relations@adva.com

1610825  18-Apr-2023 CET/CEST