ADTRAN Holdings, Inc. reports fourth quarter and full year 2025 financial results

Huntsville, Alabama, USA. — Feb. 25, 2026 — ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) (“ADTRAN Holdings” “ADTRAN” or the “Company”) today announced its unaudited financial results for the fourth quarter ended December 31, 2025.