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 951-975 of 1,000 matching filings.

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25

Current page

39

4

PRIMARY DOCUMENT

Filing date: 02 Jan 2018
Reporting date: 31 Dec 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Jan 2018
Reporting date: 31 Dec 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 000-24612

8-K - Q4 PRE-RELEASE

Filing date: 29 Dec 2017
Reporting date: 28 Dec 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 28 Nov 2017
Reporting date: 28 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 11 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 11 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 11 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 11 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 11 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 11 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 11 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 15 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 15 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 15 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 15 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 15 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 15 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 15 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2017
Reporting date: 15 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 000-24612

8-K

Filing date: 16 Nov 2017
Reporting date: 11 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 14 Nov 2017
Reporting date: 12 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 14 Nov 2017
Reporting date: 12 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 14 Nov 2017
Reporting date: 12 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 14 Nov 2017
Reporting date: 12 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 14 Nov 2017
Reporting date: 12 Nov 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

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