ADVA Optical Networking SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution

DGAP Voting Rights Announcement: ADVA Optical Networking SE ADVA Optical Networking SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution 26.10.2021 / 11:17 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 Name: ADVA Optical Networking SE Street: Märzenquelle 1-3 Postal code: 98617 City: Meiningen-Dreissigacker Germany Legal Entity Identifier (LEI): 5299001QZNN0TKI9J120 2. Reason for notification X Acquisition/disposal of shares with voting rights   Acquisition/disposal of instruments   Change of breakdown of voting rights   Other reason: 3. Details of person subject to the notification obligation Legal entity: Dimensional Holdings Inc. City of registered office, country: Austin, Texas, United States of America (USA) 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: 20 Oct 2021 6. Total positions   % of voting rights attached to shares (total of 7.a.) % of voting rights through instruments (total of 7.b.1 + 7.b.2) Total of both in % (7.a. + 7.b.) Total number of voting rights pursuant to Sec. 41 WpHG New 3.63 % 0.76 % 4.40 % 51097512 Previous notification 2.65 % 1.74 % 4.40 % / 7. Details on total positions a. Voting rights attached to shares (Sec. 33, 34 WpHG) ISIN Absolute In %   Direct (Sec. 33 WpHG) Indirect (Sec. 34 WpHG) Direct (Sec. 33 WpHG) Indirect (Sec. 34 WpHG) DE0005103006 0 1856074 0.00 % 3.63 % Total 1856074 3.63 % b.1. Instruments according to Sec. 38 (1) no. 1 WpHG Type of instrument Expiration or maturity date Exercise or conversion period Voting rights absolute Voting rights in % Securities Lending (right of recall) 390000 0.76 %     Total 390000 0.76 % b.2. Instruments according to Sec. 38 (1) no. 2 WpHG Type of instrument Expiration or maturity date Exercise or conversion period Cash or physical settlement Voting rights absolute Voting rights in % 0 0.00 %       Total 0 0.00 % 8. Information in relation to the person subject to the notification obligation   Person subject to the notification obligation is not controlled nor does it control any other undertaking(s) that directly or indirectly hold(s) 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 rights (if at least 3% or more) % of voting rights through instruments (if at least 5% or more) Total of both (if at least 5% or more) Dimensional Holdings Inc. % % % Dimensional Fund Advisors LP 3.45 % % % Dimensional Fund Advisors Ltd. % % % - % % % Dimensional Holdings Inc. % % % Dimensional Fund Advisors LP 3.45 % % % DFA Canada LLC % % % Dimensional Fund Advisors Canada ULC % % % - % % % Dimensional Holdings Inc. % % % Dimensional Fund Advisors LP 3.45 % % % DFA Australia Limited % % % - % % % Dimensional Holdings Inc. % % % Dimensional Fund Advisors LP 3.45 % % % Dimensional Advisors Ltd. % % % Dimensional Fund Advisors Pte. Ltd. % % % 9. In case of proxy voting according to Sec. 34 para. 3 WpHG (only in case of attribution of voting rights in accordance with Sec. 34 para. 1 sent. 1 No. 6 WpHG) Date of general meeting: Holding total positions after general meeting (6.) after annual general meeting: Proportion of voting rights Proportion of instruments Total of both % % % 10. Other explanatory remarks: Date 26 Oct 2021 26.10.2021 The DGAP Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases. Archive at www.dgap.de

Language:	English
Company:	ADVA Optical Networking SE
	Märzenquelle 1-3
	98617 Meiningen-Dreissigacker
	Germany
Internet:	www.advaoptical.com

End of News	DGAP News Service

1243581  26.10.2021