• ADTRAN Chief Technology Officer Christoph Glingener sold 126,115 shares in transaction dated May 7, 2026.
• Sale executed at multiple prices, mainly around USD 14.4 to USD 15.7 per share.
• Aggregate sale price USD 14.95 per share for total proceeds of USD 1.89 million.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. ADTRAN Holdings Inc. published the original content used to generate this news brief via EQS News, a service of EQS Group AG (Ref. ID: dd_104872_de), on May 13, 2026, and is solely responsible for the information contained therein.