Event Type
Disclosure
Mandatory
Variant
8-K
. Item 7.01 Regulation FD Disclosure. As a company listed on the Frankfurt Stock Exchange, ADTRAN is subject to German and European securities laws. Article 17
. The information included in, or incorporated into, Items 2.02 and 7.01 of this Current Report on Form 8-K is being furnished and shall not be deemed “filed” f
Financial Statements and Exhibits. Exhibit Number Description 99.1 Press Release dated January 21, 2026 99.2 Ad Hoc Notification dated January 21, 2026 (English