Adtran Holdings, Inc.

Adtran Holdings, Inc.: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution

07.07.2026 / 22:30 CET/CEST

Dissemination of a Voting Rights Announcement transmitted by - a service of .

The issuer is solely responsible for the content of this announcement.

Notification of Major Holdings1. Details of issuer
Name:Adtran Holdings, Inc.Street:901 Explorer BoulevardPostal code:35806City:HuntsvilleUnited StatesLegal Entity Identifier (LEI):549300VV36J86CRRWF77
2. Reason for notification
XAcquisition/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: iShares TrustCity of registered office, country: Wilmington, Delaware, 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:

02 Jul 2026

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 WpHGNew2.92 %1.32 %4.24 %81452688Previous notification3.32 %0.88 %4.19 %/
7. Details on total positions a. Voting rights attached to shares (Sec. 33, 34 WpHG)
ISINAbsoluteIn % Direct (Sec. 33 WpHG)Indirect (Sec. 34 WpHG)Direct (Sec. 33 WpHG)Indirect (Sec. 34 WpHG)US00486H1059238016302.92 %0 %Total23801632.92 %
b.1. Instruments according to Sec. 38 (1) no. 1 WpHG
Type of instrumentExpiration or maturity dateExercise or conversion periodVoting rights absoluteVoting rights in %Lent Securities (right to recall)N/AN/A10738541.32 %  Total10738541.32 %
b.2. Instruments according to Sec. 38 (1) no. 2 WpHG
Type of instrumentExpiration or maturity dateExercise or conversion periodCash or physical settlementVoting rights absoluteVoting rights in %-00 %   Total00 %
8. Information in relation to the person subject to the notification obligation
XPerson 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.). 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)
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

07 Jul 2026

07.07.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.

Language:EnglishCompany:Adtran Holdings, Inc.901 Explorer Boulevard35806 HuntsvilleUnited StatesInternet:www.adtran.com
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