$ADTN 8-K/A SEC Filings

Huntsville, Alabama, USA. – July 16, 2025 — ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) (“ADTRAN Holdings” or the “Company”) today announced preliminary unaudited revenue for the quarter ended June 30, 2025. All figures in this rel...

On August 6, 2023, ADTRAN Holdings, Inc. (the “Company”) issued a press release that reported the Company’s financial results for the fiscal quarter and six months ended June 30, 2023 (the “Earnings Release”). A copy of the Earnings Rele...

ADTRAN Holdings, Inc. Announces Corrected Ex-Dividend Date for Second Quarter Cash Dividend – Payment Amount, Payable Date and Record Date Unchanged

The Initial 8-K included, as Exhibit 99.1, a press release issued on November 7, 2022 (the “Press Release”) that reported unaudited condensed consolidated financial results of the Company for the quarter and nine months ended September 3...

HUNTSVILLE, Ala. - (October 24, 2022)— ADTRAN Holdings, Inc. (NASDAQ: ADTN and FSE: QH9) (“ADTRAN Holdings” or the “Company”) today announced certain preliminary financial results for the third quarter ended September 30, 2022. All figur...

To the board of directors of ADVA Optical Networking SE, Meiningen

On February 3, 2021, ADTRAN, Inc. (“ADTRAN” or the “Company”) issued a press release that reported the Company’s financial results for the fiscal quarter and twelve months ended December 31, 2020 (the “Earnings Release”). A copy of the E...