ADTRAN Holdings, Inc. (ADTN)

CIK 926282 · operating company. SEC filings, financial statements, 10-K sections, 8-K items and insider trades for ADTRAN Holdings, Inc..

Recent SEC filings

FiledFormAccession number
Nov 5, 202610-Q0001193125-26-449723
Nov 5, 202640001193125-26-450180
Nov 3, 20268-K0001193125-26-444397
Nov 2, 202630001193125-26-443705
Nov 2, 202640001193125-26-443716
Oct 30, 2026SCHEDULE 13G0002100119-26-001542
Oct 29, 20268-K0001193125-26-438101
Aug 10, 202640001193125-26-342317
Aug 10, 20268-K0001193125-26-342359
Aug 7, 202640001193125-26-340206
Aug 4, 202610-Q0001193125-26-331632
Aug 4, 20268-K0001193125-26-331458
Jul 28, 202640001193125-26-320947
Jul 23, 20268-K0001193125-26-314198
Jul 22, 20268-K0001193125-26-311290
Jul 17, 2026S-3ASR0001193125-26-307471
Jul 6, 202640001193125-26-296161
Jul 1, 202630001193125-26-292752
Jun 26, 20268-K0001193125-26-283882
Jun 26, 202611-K0001193125-26-285745
May 22, 202640001193125-26-236824
May 20, 20261440001950047-26-004824
May 18, 20268-K0001193125-26-228208
May 12, 2026SD0001193125-26-218337
May 11, 202640001193125-26-216692