Adtran Holdings, Inc.: Release according to Article 41 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution

EQS Total Voting Rights Announcement: Adtran Holdings, Inc. / Total Voting Rights Announcement Adtran Holdings, Inc.: Release according to Article 41 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution 30.09.2025 / 16:16 CET/CEST Total Voting Rights Announcement transmitted by EQS News - a service of EQS Group. The issuer is solely responsible for the content of this announcement. Publication of new total number of voting rights according to Sec. 41 WpHG 1. Details of issuer Adtran Holdings, Inc. 901 Explorer Boulevard 35806 Huntsville United States 2. Type of capital measure or other measure   Type of capital measure or other measure Date of status / date of effect X Conditional capital increase (Sec. 41 para. 2 WpHG) 30.09.2025   Other (capital) measure (Sec. 41 para. 1 WpHG) 3. New total number of voting rights: 80.093.032 number of multiple voting rights thereof: 0 30.09.2025 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases. Archive at www.eqs-news.com

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

End of News	EQS News Service

2206236  30.09.2025 CET/CEST