Adtran Networks SE: Release according to Article 40, Section 1 of the WpHG
(the German Securities Trading Act) with the objective of Europe-wide
distribution

EQS Voting Rights Announcement: Adtran Networks SE
Adtran Networks SE: Release according to Article 40, Section 1 of the WpHG
(the German Securities Trading Act) with the objective of Europe-wide
distribution

26.03.2024 / 18:20 CET/CEST
Dissemination of a Voting Rights Announcement transmitted by EQS News - a
service of EQS Group AG.
The issuer is solely responsible for the content of this announcement.

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Notification of Major Holdings

1. Details of issuer

     Name:                             Adtran Networks 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: The Goldman Sachs Group, Inc.
   City of registered office, country: Wilmington, DE, United States of
   America (USA)

4. Names of shareholder(s)
holding directly 3% or more voting rights, if different from 3.

Goldman Sachs International

5. Date on which threshold was crossed or reached:

21 March 2024

6. Total positions

               % of voting  % of voting rights   Total of  Total number of
           rights attached             through  both in %    voting rights
                 to shares  instruments (total    (7.a. +      pursuant to
           (total of 7.a.)   of 7.b.1 + 7.b.2)      7.b.)     Sec. 41 WpHG
  New               9.08 %              2.89 %    11.97 %         52054500
  Previo-          10.23 %              1.86 %    12.08 %                /
  us
  notifi-
  cation

7. Details on total positions
a. Voting rights attached to shares (Sec. 33, 34 WpHG)

    ISIN            Absolute                       In %
                  Direct (Sec.  Indirect (Sec.  Direct (Sec.  Indirect
                      33 WpHG)        34 WpHG)      33 WpHG)  (Sec. 34
                                                                 WpHG)
    DE0005103006             0         4725833           0 %    9.08 %
    Total           4725833                       9.08 %

b.1. Instruments according to Sec. 38 (1) no. 1 WpHG

    Type of     Expiration or  Exercise or    Voting     Voting
    instrument  maturity date  conversion     rights  rights in
                               period       absolute          %
    Right To    Open                          412445     0.79 %
    Recall
    Right Of    Open                         1025570     1.97 %
    Use
                               Total         1438015     2.76 %

b.2. Instruments according to Sec. 38 (1) no. 2 WpHG

    Type of    Expiration   Exercise or  Cash or       Voting  Voting
    instrume-  or maturity  conversion   physical      rights  rights
    nt         date         period       settlement  absolute    in %
    Swap       06.03.2034                Cash           67512  0.13 %
                                         Total          67512  0.13 %

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       % of voting rights  Total of both
                   rights (if at  through instruments (if   (if at least
                     least 3% or     at least 5% or more)    5% or more)
                           more)
    The Goldman                %                        %              %
    Sachs Group,
    Inc.
    Goldman                    %                        %              %
    Sachs (UK)
    L.L.C.
    Goldman                    %                        %              %
    Sachs Group
    UK Limited
    Goldman                    %                        %              %
    Sachs
    Internationa-
    l Bank
    -                          %                        %              %
    The Goldman                %                        %              %
    Sachs Group,
    Inc.
    Goldman                    %                        %              %
    Sachs & Co.
    LLC
    -                          %                        %              %
    The Goldman                %                        %              %
    Sachs Group,
    Inc.
    Goldman                    %                        %              %
    Sachs (UK)
    L.L.C.
    Goldman                    %                        %              %
    Sachs Group
    UK Limited
    Goldman               9.08 %                        %        11.58 %
    Sachs
    Internationa-
    l

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    Proportion of    Total of
                   rights      instruments        both
                        %                %           %

10. Other explanatory remarks:



Date

26 March 2024


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26.03.2024 CET/CEST The EQS Distribution Services include Regulatory
Announcements, Financial/Corporate News and Press Releases.
Archive at www.eqs-news.com

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   Language:    English
   Company:     Adtran Networks SE
                Märzenquelle 1-3
                98617 Meiningen-Dreissigacker
                Germany
   Internet:    www.advaoptical.com

End of News EQS News Service
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1867965 26.03.2024 CET/CEST