Year archive

ADTRAN Holdings, Inc. — 2026 filings

All 88 regulatory filings released by ADTRAN Holdings, Inc. (ADTN) in 2026, sourced directly from the official regulator.

88 Filings

2026 Period

2026 filings (88)

Filing	Released	Lang
Major Shareholding Notification 2026 Major Shareholding Notification	2026-05-22	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-05-21	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-05-20	English
Release according to Article 50 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution Report Publication Announcement	2026-05-18	English
8-K Regulatory Filings	2026-05-18	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-05-16	English
Adtran Holdings, Inc.: Christoph Glingener, Sale of 126,115 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) Due to their large number, the individual transactions to be reported under number 4 l Director's Dealing	2026-05-14	English
Release according to Article 50 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution Report Publication Announcement	2026-05-13	English
Adtran Holdings, Inc.: Christoph Glingener, Acquisition of 22,277 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) due to the exercise of 22,277 stock options pursuant to the 2015 Employee Stock I Director's Dealing	2026-05-13	English
SD - ADTRAN Holdings, Inc. (0000926282) (Filer) Regulatory Filings	2026-05-12	English
Q1 statement / Q1 financial report 2026 Interim / Quarterly Report Q1 2026	2026-05-12	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-05-11	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-05-08	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-05-06	English
10-Q - ADTRAN Holdings, Inc. (0000926282) (Filer) Interim / Quarterly Report	2026-05-05	English
8-K - ADTRAN Holdings, Inc. (0000926282) (Filer) Regulatory Filings	2026-05-05	English
ADTRAN Holdings, Inc. reports first quarter 2026 financial results Interim / Quarterly Report	2026-05-05	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-05-02	English
Release according to Article 41 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution Declaration of Voting Results & Voting Rights Announcements	2026-04-30	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-29	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-28	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-23	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-22	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-21	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-20	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-17	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-14	English
Release according to Article 50 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution Report Publication Announcement	2026-04-08	English
Adtran Holdings, Inc.: James Denson Wilson Jr, Acquisition of 24,908 PSUs as part of Equity Incentive Compensation. The PSUs will pay out in up to 44,834.40 shares in ADTRAN Holdings, Inc. (ISIN US00 Director's Dealing	2026-04-08	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-07	English
8-K - ADTRAN Holdings, Inc. (0000926282) (Filer) Regulatory Filings	2026-04-07	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-04	English
Release according to Article 50 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution Report Publication Announcement	2026-04-01	English
ADTRAN Holdings Inc.: Bekanntmachung der Einberufung zur Hauptversammlung am 13.05.2026 in www.virtualshareholdermeeting.com/ADTN2026 mit dem Ziel der europaweiten Verbreitung gema 121 AktG Proxy Solicitation & Information Statement	2026-04-01	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-31	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-27	English
ARS - ADTRAN Holdings, Inc. (0000926282) (Filer) Annual Report	2026-03-27	English
DEFA14A - ADTRAN Holdings, Inc. (0000926282) (Filer) Regulatory Filings	2026-03-27	English
DEF 14A - ADTRAN Holdings, Inc. (0000926282) (Filer) Proxy Solicitation & Information Statement	2026-03-27	English
SCHEDULE 13G/A - ADTRAN Holdings, Inc. (0000926282) (Subject) Major Shareholding Notification	2026-03-26	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-25	English
Adtran Holdings, Inc.: Timothy P. Santo, Acquisition of 3,610 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) due to the vesting of 5,111 Restricted Stock Units (granted March 19, 2025) pursuant t Director's Dealing	2026-03-24	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-19	English
SCHEDULE 13G/A - ADTRAN Holdings, Inc. (0000926282) (Subject) Major Shareholding Notification	2026-03-18	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-18	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-16	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-14	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-12	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-10	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-09	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-07	English
Adtran Holdings, Inc.: Jacqueline Hourigan Rice, Sale of 14,406 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) Director's Dealing	2026-03-06	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-05	English
Annual financial report 2025 Annual Report FY 2025	2026-03-05	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-03	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-03-02	English
Release according to Article 41 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution Share Issue/Capital Change	2026-02-28	English
10-K - ADTRAN HOLDINGS, INC. (0000926282) (Filer) Annual Report FY 2025	2026-02-26	English
8-K - ADTRAN HOLDINGS, INC. (0000926282) (Filer) Regulatory Filings	2026-02-26	English
ADTRAN Holdings, Inc. reports fourth quarter and full year 2025 financial results Earnings Release Q4 2025	2026-02-26	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-02-24	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-02-05	German
Release according to Article 41 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution Declaration of Voting Results & Voting Rights Announcements	2026-01-31	English
Adtran Holdings, Inc.: James Denson Wilson Jr, Acquisition of 2,468 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) due to the vesting of 8,825 Performance Stock Units (PSUs) (granted January 20, Director's Dealing	2026-01-30	English
4/A Filing Director's Dealing	2026-01-30	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-01-29	English
Adtran Holdings, Inc.: James Denson Wilson Jr, Acquisition of 2,690 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) due to the vesting of 8,825 Performance Stock Units (PSUs) (granted January 20, Director's Dealing	2026-01-29	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-01-28	English
Adtran Holdings, Inc.: Thomas R. Stanton, Acquisition of 18,080 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) due to the vesting of 32,489 Restricted Stock Units (granted January 26, 2024) pursu Director's Dealing	2026-01-28	English
4 Filing Director's Dealing	2026-01-28	English
4 Filing Director's Dealing	2026-01-28	English
4 Filing Director's Dealing	2026-01-27	English
4 Filing Director's Dealing	2026-01-27	English
Adtran Holdings, Inc.: James Denson Wilson Jr, Acquisition of 1,441 shares in ADTRAN Holdings, Inc. (ISIN US00486H1059) due to the vesting of 2,206 Restricted Stock Units (granted January 20, 2023) p Director's Dealing	2026-01-23	English
ADTRAN Holdings, Inc.: Preliminary revenue above guidance and non-GAAP earnings per share above analyst consensus for Q4 2025 Earnings Release Q4 2025	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
8-K - ADTRAN HOLDINGS, INC. (0000926282) (Filer) Regulatory Filings	2026-01-21	English
Report Publication Announcement 2026 Report Publication Announcement	2026-01-19	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-01-13	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-01-09	English
Adtran Holdings, Inc.: Nikos Theodosopoulos, Acquisition of 13,809 shares of restricted stock as part of Equity Incentive Compensation. The restrictions lapse upon vesting of the RSAs and unrestricted Director's Dealing	2026-01-07	English
4 Filing Director's Dealing	2026-01-05	English
4 Filing Director's Dealing	2026-01-05	English
4 Filing Director's Dealing	2026-01-05	English
4 Filing Director's Dealing	2026-01-05	English
4 Filing Director's Dealing	2026-01-05	English
4 Filing Director's Dealing	2026-01-05	English

Filings by year

2026 88 filings
2025 234 filings
2024 223 filings
2023 300 filings
2022 333 filings
2021 159 filings
2020 101 filings
2019 109 filings
2018 93 filings
2017 97 filings
2016 77 filings
2015 77 filings
2014 83 filings
2013 89 filings
2012 88 filings
2011 59 filings
2010 44 filings