ADTRAN Holdings, Inc. reports

Company location: Huntsville, AL
Fiscal year end: 31 December

ADTRAN Holdings, Inc. has filed 2,099 SEC EDGAR filings since 07 Feb 1996

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SEC filing history

Showing 776-800 of 1,000 matching filings.

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25

Current page

32

4

PRIMARY DOCUMENT

Filing date: 18 Nov 2019
Reporting date: 15 Nov 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 18 Nov 2019
Reporting date: 15 Nov 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 07 Nov 2019
Reporting date: 07 Nov 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 000-24612

10-Q

Filing date: 05 Nov 2019
Reporting date: 30 Sep 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 000-24612

8-K

Filing date: 31 Oct 2019
Reporting date: 30 Oct 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 17 Oct 2019
Reporting date: 16 Oct 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 15 Oct 2019
Reporting date: 11 Oct 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 000-24612

8-K

Filing date: 10 Oct 2019
Reporting date: 09 Oct 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

3

PRIMARY DOCUMENT

Filing date: 27 Sep 2019
Reporting date: 16 Sep 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 000-24612

8-K

Filing date: 20 Sep 2019
Reporting date: 20 Sep 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-Q File 000-24612

10-Q

Filing date: 20 Sep 2019
Reporting date: 30 Jun 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-K/A File 000-24612

10-K/A

Filing date: 20 Sep 2019
Reporting date: 31 Dec 2018
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 000-24612

8-K

Filing date: 21 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 16 Aug 2019
Reporting date: 15 Aug 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

NT 10-Q File 000-24612

NT 10-Q

Filing date: 12 Aug 2019
Reporting date: 30 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 000-24612

8-K

Filing date: 18 Jul 2019
Reporting date: 17 Jul 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

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