EQS-PVR: 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

Core Viewpoint - BlackRock, Inc. has increased its voting rights in Adtran Holdings, Inc. to 12.996%, with a direct holding of 7.48% and indirect voting rights of 5.52% as of December 22, 2025 [4][3]. Group 1: Company Details - The issuer is Adtran Holdings, Inc., located at 901 Explorer Boulevard, Huntsville, United States [2]. - The Legal Entity Identifier (LEI) for Adtran Holdings, Inc. is 549300VV36J86CRRWF77 [2]. Group 2: Notification of Major Holdings - The notification was triggered by the acquisition of shares with voting rights, specifically a voluntary group notification at the subsidiary level [3]. - BlackRock, Inc. is the entity subject to the notification obligation, registered in Wilmington, Delaware, USA [3]. Group 3: Voting Rights Breakdown - As of the latest notification, BlackRock holds 7.48% of voting rights attached to shares and 5.52% through instruments, totaling 12.996% [4]. - The previous notification indicated a voting rights percentage of 7.01% attached to shares and 5.98% through instruments [4]. Group 4: Instruments and Voting Rights - BlackRock holds 1,908,956 voting rights (2.38%) through lent securities and 2,514,218 voting rights (3.14%) through contracts for difference [7][8]. - The total number of voting rights for Adtran Holdings, Inc. is 80,159,786 [4].