523 filings
8-K
ADTN
ADTRAN Holdings, Inc.
17 Apr 24
Cost Associated with Exit or Disposal Activities
4:43pm
DEFA14A
ADTN
ADTRAN Holdings, Inc.
4 Apr 24
Additional proxy soliciting materials
10:45am
ARS
2023 FY
ADTN
ADTRAN Holdings, Inc.
27 Mar 24
Annual report to shareholders
9:10am
DEFA14A
ADTN
ADTRAN Holdings, Inc.
27 Mar 24
Additional proxy soliciting materials
9:05am
DEF 14A
ADTN
ADTRAN Holdings, Inc.
Definitive proxy
27 Mar 24
9:00am
8-K
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15 Mar 24
Results of Operations and Financial Condition
7:30am
NT 10-K
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29 Feb 24
Notice of late annual filing
4:28pm
8-K
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27 Feb 24
ADTRAN Holdings, Inc. reports preliminary fourth quarter 2023 financial results
6:59am
8-K
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20 Feb 24
Non-Reliance on Previously Issued Financial Statements or a Related Audit Report or Completed Interim Review
4:52pm
8-K
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22 Jan 24
Entry into a Material Definitive Agreement
8:00am
8-K
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6 Dec 23
Departure of Directors or Certain Officers
4:06pm
8-K
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5 Dec 23
Departure of Directors or Certain Officers
4:06pm
8-K
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7 Nov 23
ADTRAN Holdings, Inc. reports third quarter 2023 financial results and announces business efficiency program
6:06am
8-K
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24 Oct 23
Departure of Directors or Certain Officers
4:10pm
8-K
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17 Oct 23
ADTRAN Holdings announces preliminary results for the third quarter of 2023
7:31am