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ADTRAN Holdings, Inc. (ADTN)

Nasdaq · CIK 0000926282

Form Report Date Filing Date Description
8-K 2026-08-10 2026-08-10 8-K
10-Q 2026-06-30 2026-08-04 10-Q
8-K 2026-08-03 2026-08-04 8-K
8-K 2026-07-21 2026-07-23 8-K
8-K 2026-07-21 2026-07-22 8-K
8-K 2026-06-23 2026-06-26 8-K
8-K 2026-05-13 2026-05-18 8-K
10-Q 2026-03-31 2026-05-05 10-Q
8-K 2026-05-04 2026-05-05 8-K
8-K 2026-04-01 2026-04-07 8-K
10-K 2025-12-31 2026-02-26 10-K
8-K 2026-02-25 2026-02-26 8-K
8-K 2026-01-21 2026-01-22 8-K
8-K 2025-12-09 2025-12-11 8-K
10-Q 2025-09-30 2025-11-04 10-Q
8-K 2025-11-03 2025-11-04 8-K
8-K 2025-09-19 2025-09-22 8-K
8-K 2025-09-15 2025-09-17 8-K
10-Q 2025-06-30 2025-08-05 10-Q
8-K 2025-08-04 2025-08-05 8-K
8-K 2025-07-24 2025-07-30 8-K
8-K 2025-07-16 2025-07-16 8-K
8-K 2025-05-27 2025-05-28 8-K
8-K 2025-05-27 2025-05-27 8-K
10-Q 2025-03-31 2025-05-20 10-Q
8-K 2025-05-13 2025-05-13 8-K
8-K 2025-05-06 2025-05-12 8-K
8-K 2025-05-07 2025-05-08 8-K
8-K 2025-04-15 2025-04-16 8-K
8-K 2025-03-06 2025-03-07 8-K
10-K 2024-12-31 2025-03-03 10-K
8-K 2025-02-26 2025-02-27 8-K
10-Q 2024-09-30 2024-11-12 10-Q
8-K 2024-11-06 2024-11-07 8-K
8-K 2024-08-27 2024-08-30 8-K
10-Q 2024-06-30 2024-08-09 10-Q
8-K 2024-08-05 2024-08-06 8-K
8-K 2024-07-31 2024-08-02 8-K
8-K 2024-06-04 2024-06-10 8-K
10-Q 2024-03-31 2024-05-10 10-Q
8-K 2024-05-08 2024-05-09 8-K
8-K 2024-05-06 2024-05-07 8-K
8-K 2024-05-03 2024-05-03 8-K
8-K 2024-04-11 2024-04-17 8-K
10-K 2023-12-31 2024-03-15 10-K
8-K 2024-03-15 2024-03-15 8-K
8-K 2024-02-26 2024-02-27 8-K
8-K 2024-02-20 2024-02-20 8-K
8-K 2024-01-16 2024-01-22 8-K
8-K 2023-12-04 2023-12-06 8-K
8-K 2023-12-01 2023-12-05 8-K
10-Q 2023-09-30 2023-11-09 10-Q
8-K 2023-11-06 2023-11-07 8-K
8-K 2023-10-18 2023-10-24 8-K
8-K 2023-10-16 2023-10-17 8-K
8-K 2023-09-25 2023-09-29 FORM 8-K
10-Q 2023-06-30 2023-08-14 10-Q
8-K 2023-08-10 2023-08-10 8-K
8-K 2023-08-06 2023-08-07 FORM 8-K
8-K 2023-06-28 2023-06-28 8-K
8-K 2023-05-26 2023-06-01 FORM 8-K
8-K 2023-05-23 2023-05-30 8-K
8-K 2023-05-10 2023-05-15 8-K
10-Q 2023-03-31 2023-05-10 10-Q
8-K 2023-05-08 2023-05-09 8-K
8-K 2023-04-10 2023-04-11 8-K
8-K 2023-03-28 2023-04-03 8-K
8-K 2023-03-27 2023-03-30 8-K
10-K 2022-12-31 2023-03-01 10-K
8-K 2023-02-21 2023-02-21 8-K
8-K 2023-02-06 2023-02-08 8-K
8-K 2023-01-20 2023-01-26 8-K
8-K 2023-01-17 2023-01-19 8-K
8-K 2022-12-01 2022-12-05 FORM 8-K
10-Q 2022-09-30 2022-11-09 10-Q
8-K 2022-11-07 2022-11-08 8-K
8-K 2022-10-24 2022-10-26 8-K
8-K 2022-10-24 2022-10-25 8-K
8-K 2022-10-18 2022-10-18 8-K
10-Q 2022-06-30 2022-08-05 10-Q
8-K 2022-08-03 2022-08-04 8-K
8-K 2022-07-18 2022-07-22 8-K
8-K 2022-07-15 2022-07-15 8-K
8-K 2022-07-08 2022-07-08 8-K
8-K 2022-07-06 2022-07-07 8-K
8-K 2022-06-30 2022-06-30 8-K
8-K 2022-05-19 2022-05-23 8-K
8-K 2022-05-11 2022-05-13 8-K
10-Q 2022-03-31 2022-05-06 10-Q
8-K 2022-05-04 2022-05-05 8-K
8-K 2022-04-01 2022-04-06 8-K
10-K 2021-12-31 2022-02-25 10-K
8-K 2022-02-02 2022-02-03 8-K
8-K 2022-01-06 2022-01-06 8-K
8-K 2021-12-28 2021-12-28 8-K
8-K 2021-11-26 2021-11-29 8-K
10-Q 2021-09-30 2021-11-05 10-Q
8-K 2021-11-01 2021-11-02 8-K
8-K 2021-11-01 2021-11-02 8-K
8-K 2021-10-14 2021-10-15 8-K
8-K 2021-10-05 2021-10-07 8-K
8-K 2021-08-29 2021-09-01 8-K
8-K 2021-08-30 2021-08-30 FORM 8-K
10-Q 2021-06-30 2021-08-06 10-Q
8-K 2021-08-04 2021-08-05 8-K
8-K 2021-05-12 2021-05-18 8-K
10-Q 2021-03-31 2021-05-06 10-Q
8-K 2021-05-05 2021-05-06 8-K
10-K 2020-12-31 2021-02-26 10-K
8-K 2021-02-03 2021-02-04 8-K
10-Q 2020-09-30 2020-11-06 10-Q
8-K 2020-11-02 2020-11-03 8-K
10-Q 2020-06-30 2020-08-07 10-Q
8-K 2020-08-05 2020-08-06 8-K
8-K 2020-07-21 2020-07-23 8-K
8-K 2020-05-13 2020-05-15 8-K
8-K 2020-05-11 2020-05-11 8-K
10-Q 2020-03-31 2020-05-08 10-Q
8-K 2020-05-06 2020-05-07 8-K
8-K 2020-02-25 2020-02-25 8-K
10-K 2019-12-31 2020-02-25 10-K
8-K 2020-02-05 2020-02-06 8-K
10-Q 2019-09-30 2019-11-05 10-Q
8-K 2019-10-30 2019-10-31 8-K
8-K 2019-10-09 2019-10-10 8-K
8-K 2019-09-20 2019-09-20 8-K
10-Q 2019-06-30 2019-09-20 10-Q
8-K 2019-08-15 2019-08-21 8-K
8-K 2019-07-17 2019-07-18 8-K
8-K 2019-05-08 2019-05-09 8-K
10-Q 2019-03-31 2019-05-07 10-Q
8-K 2019-04-17 2019-04-18 8-K
8-K 2019-03-06 2019-03-07 8-K
10-K 2018-12-31 2019-02-28 10-K
8-K 2019-01-23 2019-01-24 8-K
8-K 2018-12-06 2018-12-06 8-K
10-Q 2018-09-30 2018-11-06 10-Q
8-K 2018-10-16 2018-10-17 8-K
10-Q 2018-06-30 2018-08-03 10-Q
8-K 2018-07-17 2018-07-18 8-K
8-K 2018-05-09 2018-05-10 8-K
10-Q 2018-03-31 2018-05-09 10-Q
8-K 2018-04-17 2018-04-18 8-K
8-K 2018-03-20 2018-03-21 8-K - SUMITOMO ACQUISITION
10-K 2017-12-31 2018-02-23 10-K
8-K 2018-01-16 2018-01-17 8-K
8-K 2017-12-28 2017-12-29 8-K - Q4 PRE-RELEASE
8-K 2017-11-11 2017-11-16 8-K
10-Q 2017-09-30 2017-11-07 10-Q
8-K 2017-10-17 2017-10-18 8-K