4
PRIMARY DOCUMENT
- Filing date
- 07 Sep 2021
- Reporting date
- 02 Sep 2021
- SEC evidence
- Open document Open filing
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- Verify source filing
ADTRAN Holdings, Inc. reports
- Company location
- Huntsville, AL
- Fiscal year end
- 31 December
Company
Names, identifiers, and filing context for this profile.
1 identity field
SEC filing record 1 source field available
ADTRAN Holdings, Inc. has filed 2,099 SEC EDGAR filings since 07 Feb 1996
SEC filing history
Showing 576-600 of 1,000 matching filings.
Per page
25
Current page
24
8-K
File 000-24612
8-K
- Filing date
- 01 Sep 2021
- Reporting date
- 29 Aug 2021
- SEC evidence
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425
File 000-24612
425
- Filing date
- 31 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
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425
File 000-24612
425
- Filing date
- 31 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
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425
File 000-24612
425
- Filing date
- 31 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 31 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 31 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 31 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
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425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
425
File 000-24612
425
- Filing date
- 30 Aug 2021
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
8-K
File 000-24612
FORM 8-K
- Filing date
- 30 Aug 2021
- Reporting date
- 30 Aug 2021
- SEC evidence
- Open document Open filing Open XBRL
- Next action
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10-Q
File 000-24612
10-Q
- Filing date
- 06 Aug 2021
- Reporting date
- 30 Jun 2021
- SEC evidence
- Open document Open filing Open XBRL
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