Notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them

29.07.2026 / 10:19 CET/CEST

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

1. Details of the person discharging managerial responsibilities / person closely associated a) Name
Title:First name:Christoph Last name(s):Glingener
2. Reason for the notification a) Position / status
  • Position:
  • Chief Technology Officer
b) Initial notification3. Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor a) Name

Adtran Holdings, Inc.

b) LEI

549300VV36J86CRRWF77

4. Details of the transaction(s) a) Description of the financial instrument, type of instrument, identification code
Type:ShareISIN:US00486H1059
b) Nature of the transaction

Acquisition of 9,384 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) due to the vesting of 7,625 Performance Stock Units (PSUs) (granted May 24, 2023, as bonus award) paying out in 9,384 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) pursuant to the Amended and Restated 2020 Employee Stock Incentive Plan.

c) Price(s) and volume(s)
Price(s)Volume(s)15.67 USD147,047.28 USD
d) Aggregated information
PriceAggregated volume15.67 USD147,047.28 USD
e) Date of the transaction

24/07/2026; UTC−5

f) Place of the transaction

Outside a trading venue

29.07.2026 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.comLEI Code:549300VV36J86CRRWF77
 End of NewsEQS News Service

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