ADTRAN Holdings, Inc. reports first quarter 2026 financial results

HUNTSVILLE, Ala.--(BUSINESS WIRE)--ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) (“ADTRAN Holdings” “ADTRAN” or the “Company”) today announced its unaudited financial results for the first quarter ended March 31, 2026. Revenue: $286.1 million, up 15.5% year-over-year. GAAP gross margin of 39.5%; Non-GAAP gross margin of 43.0%; up 108 and 55 basis points year-over-year, respectively. Operating margin: GAAP operating margin of 2.2 %; non-GAAP operating margin of 6.9%. Net cash provided by ope.