ADTRAN Holdings, Inc.

Director's Dealing • Jan 7, 2026

News Details

Directors’ Dealings | 7 January 2026 10:19

Adtran Holdings, Inc.: Nikos Theodosopoulos, Acquisition of 13,809 shares of restricted stock as part of Equity Incentive Compensation. The restrictions lapse upon vesting of the RSAs and unrestricted shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) are held.

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

07.01.2026 / 10:19 CET/CEST

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

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1. Details of the person discharging managerial responsibilities / person closely associated

a) Name

Title:
First name:	Nikos
Last name(s):	Theodosopoulos

2. Reason for the notification

a) Position / status

Position:	Member of the Board of Directors

b) Initial notification

3. 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:	Share
Description:	Restricted Stock Awards (RSAs) regarding shares in ADTRAN Holdings, Inc. (ISIN US00486H1059

b) Nature of the transaction

Acquisition of 13,809 shares of restricted stock as part of Equity Incentive Compensation. The restrictions lapse upon vesting of the RSAs and unrestricted shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) are held.

c) Price(s) and volume(s)

Price(s)	Volume(s)
0.00 USD	0.00 USD

d) Aggregated information

Price	Aggregated volume
not numberable	not numberable

e) Date of the transaction

31/12/2025; UTC−6

f) Place of the transaction

Outside a trading venue

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07.01.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.

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Language:	English
Company:	Adtran Holdings, Inc.
	901 Explorer Boulevard
	35806 Huntsville
	United States
Internet:	www.adtran.com

End of News	EQS News Service

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102770  07.01.2026 CET/CEST