EQS-News: Adtran Holdings, Inc. / Key word(s): Quarter ResultsADTRAN Holdings, Inc. reports second quarter 2026 financial results04.08.2026 / 04:30 CET/CESTThe issuer is solely responsible for the content of this announcement. ADTRAN Holdings, Inc. reports second quarter 2026 financial results Huntsville, Alabama, USA. - August 3, 2026 - ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) ("ADTRAN Holdings" "ADTRAN" or the "Company") today announced its unaudited financial results for the second quarter ended June 30, 2026. 1 Non-GAAP operating margin (which is calculated as non-GAAP operating income (loss) divided by revenue) is a non-GAAP financial measure. The Company has provided guidance for its third quarter 2026 non-GAAP operating margin.