SEC Filings
Search SEC EDGAR filings by company ticker and form type
arrow_back
ADTRAN Holdings, Inc.
DEFR14A
4 filings
All DEFR14A Filings
Complete history of DEFR14A filings with the SEC
| Date Filed | View on EDGAR |
|---|---|
|
06
Jun
Jun 06, 2025
|
open_in_new View Filing |
|
30
Apr
Apr 30, 2015
|
open_in_new View Filing |
|
22
Mar
Mar 22, 2004
|
open_in_new View Filing |
|
18
Mar
Mar 18, 1999
|
open_in_new View Filing |